Fringe Uhf Diplexer 3740, New Other Electronics in Portarlington, Laois, Ireland for 23. Free-to-air + Saorview HD Package to 3 rooms Including Installation-FREE TV. use plastic enclosures for theirs. From a technical point of view, the parabolic dish reflector is characterized by two parameters: the dish focal point and diameter. MFJ MFJ-916B 144 / 430 MHz Duplexer - 2M / 70cm - 200 Watts - All SO-239 Connectors. A 3 dB, 90° hybrid coupler is a four-port device that is used either to equally split an input signal with a resultant 90° phase shift between output ports or to combine two signals while maintaining high isolation between the ports. Oct 15, 2002 North I am going to be setting up two OTA antennas and combining them into one cable run. It's been a long time since I've chased any amateur satellites. Find Diplexer Design Manufacturers & Suppliers from China. In order to use two antennas, one for 2m and one for 70cm, I purchased an MFJ-916B Duplexer to allow me to use only one feed line. Therefore, a. 95 * Buy It *After Coupons & Promotions. Product Description. Installations with decoders pre-2017 Decoders, 3 Decoders. Eventually I got round to looking at it earlier tonight and inside the diplexer is damp, so I suspect both will need renewed. 52-54 A simple circuit that lets you superimpose DC control voltage onto the transmission line without altering the RF characteristics. 7 out of 5 stars 5. Antennas can be divided into two categories. As the manufacturing source for many suppliers and distributors globally, we can help you find the millimeter wave product you need. 2 WAY SAT/TV Splitter F-Type 5-2450MHz Matchmaster. MFJ-916BC has 12” coaxial pigtails with PL- 259 connectors. We also sell separate coaxial cable and fittings including a coaxial cable plug and coaxial coupler. Step Response of Marki Microwave Bias Tees Recently a customer asked what the settling time of the DC port on our surface mount bias tees was. Differential and Common Mode Noise Noise is classified into two types according to the conduction mode. Satellite TV Antenna Signal Cable Combiner Y Splitter Diplexer Vhf Uhf F Type. Digiwave Sat/Ant Diplexer (full housing type) has a variety of uses, but it's typically used with DISH Network and DirecTV Satellite Television sytems where only one cable run is available, to send satellite programming "back out" to other televisions in other rooms using the same cable. I've also mentioned on occasion that you can build a satellite 2m/440 yagi for about. The CF-416 models are for 146/446 MHz. My radio is a Yaesu FT60 handheld, 5W max. We have a selection of high-performance antenna TV aerials suitable for medium to weak signal areas. It consists of two Chebyshev low-pass / […]. Please note, setting up dstv decoders whether it be single, extra view or the new explora's, can be a daunting task and extremely technical for most people. #N#POPULAR CATEGORIES. And there are two ways to power a remote antenna switch. Shop with Antennas Direct for all of your antenna and accessories needs. This PCB can withstand roughly 10W ERP - which is 3 Watts more than any of my HT's can output. Led Aircraft - $79. What single LO 10750 LNBF is recommended and what specific duplexer is needed for combining sat and anttena?. The IMD, two tone dynamic range, (tones spaced 20 kHz apart), increased from 97db to 106 db with the new mixer and at 2KHz tone spacing it is now 103. My recommendation for an antenna that will receive both the VHF and the UHF TV signals is the EZ HD antenna >. Look at the MFJ 1768. 00 Build The Longez Long-ez Airplane Diy Plans Manual Plus Extras On Dvd. Like the crossovers used in audio, the diplexer's job is to send the highs one way and the lows the other (as the crossover of a 2-way speaker sends highs to the tweeter and lows to the woofer). Staff Member. APRS Controller. This DIPLEXER separates 2m from 70cm on the same coax cable. RF diplexers have many uses, such as in a cellular station where they facilitate transmission and reception simultaneously. Otherwise if you have an OTA channel 10 and a cable channel 10, then the TV wont be able to show anything clearly. DIRECTV Whole-Home DVR: Impressive, but what a pain to get installed. Don’t see a product or part. Buy a commercially manufactured mixer. Dividers and phase shifters at LO (BFO) lines 6. The 500mA 5V. Homebrew cavity resonator/duplexer for 2m repeater There has been some interest in the club establishing another 2m repeater, but lacked a duplexer. The feedline connects directly to the radio (no diplexer/duplexer needed). Problem is that only way to move/extend cable which is connected to VM box is to run it under floor but not possible to do without lifting floor boards which is not an option as that room is not going to be refurbished in the nearest future, so the only option I have to use second VM cable which runs. when receiving the diplexer separates the two frequencies just like having two filters in parallel Ex: cable and antenna combiner/splitter. Examples of our manufactured Housings, Enclosures and Chassis include the following applications: Tower mounted amplifiers, RF Power Amplifiers, Same Band and Cross-band Combiners, Repeater Amplifier Housings , Solid State Power Amplifiers , Filters, Diplexers and much more. 4GHz 4-Way Digital Splitter. The Dish line is connected on the Diplexer's High Port because Satellite Dish signals are above 900mhz. Discussion in 'Homebrew and Kit Projects' started by M6YAZ, Mar 29, 2013. A diplexer allows two different devices to share a common communications channel. You can probably go as far as 40-50 Watt, but keep your transmissions a little shorter. I got a 36" FTA dish, OTA anttena, and all the cabling ran. E36B is for East and West African countries. 2 Ghz yagi antenna for about $20. Toll Free in the United States. Coax is one of the oldest types of cables and has withstood the test of time, still being used over 100 years after its invention. This is achieved through filters that separate the frequencies of interest, allowing signals at two different frequencies to be sent and received from the same antenna. diplexer from the power amplifier. 6 kilometers) using a 0. Digital HD 200 Mile Range HD TV TV Satellite Antenna Indoor 1080P with 4 Meter Coax Cable. JAK Electronics can supply FAR-D6NF-1G9600-P1BZ-Z stock quantity,FAR-D6NF-1G9600-P1BZ-Z price, dispatch in 24 hours. You can combine UHF and VHF antennas with a UVSJ (UHF. Talley stocks a wide variety of infrastructure products. Analyze My Homebrew Diplexer. I completed the filter/diplexer board and did some low power testing of the main amplifier board. Usually, there is a buzzer or led in series (inside continuity meter) to identify if the current flows through it or not. Ham Radio Satellite Antenna. 5mm themselves, either as a repair or brand. The Iron powder toriods were also sourced from the internet. 1 Response to The Duplexer - Beg, Buy or Build? John, KD8TAE says: December 22, 2013 at 2:07 pm. Diplexer — 2m / 70cm Article by HB9ABX, reprinted from Anode, Club Newsletter of West Rand Radio Club "The names DUPLEXER and DIPLEXER are very similar and frequently confused. DCS1800 MHz & UMTS2100 MHz Diplexer Combiner CSG-COMB-DIP-1721D DCS1800MHz-UMTS2100MHz-Diplexer-combiner. As a side note here, I always remember the difference between diplexer and duplexer as a diplexer works by splitting or combining signals from separate bands (i. Diplexer definition is - a combining network (such as an impedance bridge or a filter circuit) allowing operation of diplex transmission (as of a radar and a communication transmitter). We are your Premier US Mobotix Distributor with free support and extensive training options. The incoming signals must be offset in frequency by an appreciable percentage so that filters can do their job sorting them out. Product Description. Uhf Vhf Antenna Combiner Frequency Mixer - Wikipedia In electronics, a mixer, or frequency mixer, is a nonlinear electrical circuit that creates new frequencies from two signals applied to it. This can improve your antenna reception for long-distance towers. DC Power Pass on UHF Port Insertion loss: VHF-IN/OUT 54-88 NHz 0. The following DIPLEXER separates the following bands: - HF and 6m on one side (= 0 - 52 Mc). • Once the first switch has been connected to the satellite dish, connect output A or B on the first switch to the input labelled UNICABLE™ Page 10 DStv Explora This installation requires a DStv Switch per DStv Explora. Many people don't understand the science behind coaxial splitters and are baffled when problems continue to manifest themselves over and over. Yaesu FT100 FAQ / Knowledge Base. The DPD2 diplexer is specifically designed for Dish Networks TM. RF combiners, splitters, couplers and hybrids are circuit elements that are used in many RF applications to split, combine or sample RF power. It’s a 6 cavity Diplexer (2 notch + 1 bandpass for each path), so I expected a very good out-of-band attenuation, which is a very interesting feature in installation sites with strong RF signals coming from other transmitters. One port (called VHF) works at 0-170 MHZ and the second port (called UHF) works from 225 to >450 MHZ. This DIPLEXER separates 2m from 70cm on the same coax cable. Usually, there is a buzzer or led in series (inside continuity meter) to identify if the current flows through it or not. 0dB/100feet at 146MHz and 2. There are different variations of this jack, such as the smaller 2. The design allows tilting for easy installation and the cable entry is sealed against the weather. Your MFJ duplexer can be used two different ways. Whether you are adding additional rooms to your current system or wanting to amplify the aerial there is a product to suit requirements. A diplexer has 3 ports, and it matters which cable connects to which. It allows the simultaneous operation of 2 different equipments (HF and VHF/UHF) over one coax cable, or the use of 2 antennas of the corresponding bands with one coax cable. About Home Made duplexer The resource is currently listed in dxzone. Roomcap, CurrentBalun, Diplexer, WINMOR. 8 out of 5 with 15 reviews. We have over 32 years of experience designing and building antennas and systems to satisfy the ever expending communications needs. Diy 9cm Aluminum Face Strip Trimming Flat Strip Bridge Metal Nose For Making Bar 9cm Metal Flat $35. You can combine UHF and VHF antennas with a UVSJ (UHF. 100W power handling for the 8 Tx ports, and lower diplexer channels (under 700MHz), and 20W W (500W peak) for the high diplexer channels (over 700MHz). It allows the simultaneous operation of 2 different equipments (HF and VHF/UHF) over one coax cable, or the use of 2 antennas of the corresponding bands with one coax cable. It consists of 2 paths of low & high pass filters, each path built on a wall of a double sided PCB BOX on opposite sides. Metal DIY Kit, DB25 Male / Female. If a 3 way signal splitter will be in use or larger I suggest the LNA 100 signal amplifier > install inline on the. So far received 3 votes for a total score of 5. E36B is for East and West African countries. Or, you can run the relay control voltage up the center conductor of the coax cable. To assemble this DIY design, get 32-inch- and 6-inch-long 1 x 4 pine boards; eight 17-inch lengths and two 34-inch lengths of bare 12-gauge copper wire (for the ears and phasing bars); heat-shrink. VHF band is sandwiched between HF (High Frequency) and UHF (Ultra High Frequency) bands in spectrum. The IMD, two tone dynamic range, (tones spaced 20 kHz apart), increased from 97db to 106 db with the new mixer and at 2KHz tone spacing it is now 103. going to order one of those tomorrow and 2 DB2's from antennasdirect. If you are like these ideas, you can view the details page, press the download button, and download the creative inspiration images & pictures to your computer. Various frequency ranges, topologies, packaging styles and configurations available. In the seven years or so, satellites I once “knew” as friends were no longer operating as they used to – some had partial failures and unpredictable schedules due to battery failures, others were completely failed and never to. Advanced Search Results can be further narrowed down by adding more conditions. It's been a long time since I've chased any amateur satellites. 5mm jacks, also called headphone jacks, are the most common type of audio cable. This project is an ultra portable dual band VHF/UHF Yagi antenna for working amateur radio satellites. Note that each branch has three cavities connected together with cables. A good duplexer can make the difference between hearing AO-27 full quieting and hearing a bunch of muffled static. Amazon's Choice for "satellite diplexer" Loops 2 Way/Port F Connector Diplexer - TV Aerial & Satellite Signal Combiner/Splitter. Diplexer — 2m / 70cm Article by HB9ABX, reprinted from Anode, Club Newsletter of West Rand Radio Club "The names DUPLEXER and DIPLEXER are very similar and frequently confused. Here's a picture of the 80m Diplexer completed. Note that each branch has three cavities connected together with cables. One port (called VHF) works at 0-170 MHZ and the second port (called UHF) works from 225 to >450 MHZ. It is different from Duplexer which seperates 2 frequencies on the same band. Sometimes with Antennas, problems arise with interference from out of band frequencies. UHF repeater 2 x Plessey radios, Polar Electronics Diplexer, Plessey BTR 8000 base station interface with mic and cables, high pass 477. • Enables combining of control stations. However, I have Sky so get RTE through that, and with the digital switch over coming I'll probably just wait until then for the reasons below. 19 Promotion Available. The Toroids are quite large for the application but i thought better to over engineer that have things fails. Because many cable operators are satisfied with picture quality received on a 3. Low-power diplexers used at lower frequencies, under about 500 MHz, are built using discrete components on PC boards (Figure 3). Masthead Power Units. The folks at Winegard are great. This is the port through which the heartbeat is sent or received. Its mission is to detect and study high-energy particles in low earth orbits. R56 MINI Cooper Hatchback: 2007, 2008, 2009, 08/2010. The simplified feed uses the structure of the antenna itself for impedance matching. Diplexer Calculator (Bridged Tee) A diplexer presents a broadband termination to e. Select Chebyshev, Elliptic, Butterworth or Bessel filter type, with filter order up to 20, and arbitrary input and output impedances. - Switching or sampling is a time-varying process. How to use diplexer in a sentence. Quick and easy delivery option available. DIPLEXER SWITCH SATELLITE + CABLE OR TV ANTENNA DIGITAL COMBINER RG6 UHF HD DTV. This means customers of all sizes and industries can use it to store and protect any amount of data for a range. Cameras & Optics; See All. About Home Made duplexer The resource is currently listed in dxzone. So far received 15 votes for a total score of 5. POPULAR CATEGORIES. Note the shield to improve the stop-band beyond -100dB and the small trimmers needed to align the CW filter to center exactly on 9. The DPD2 diplexer is specifically designed for Dish Networks TM. The main category is Duplexers and diplexers that is about Duplexer and diplexer. So my idea is to help ordinary people that have some DIY experience to make a lamp and disinfect the clothes and themself like skin and face and face mask and so. 4pF series capacitor must have a tolerance of ±0. 6dB 2 YEARS 18db GAIN FB608603 TRU-BAND CARAVAN BLACK ARROW DIY KIT HYBRID LOG Single Element Inner Prime 6-12 5 -6. Hittite Microwave Corporation May 2010 any RF engineers are well aware of the relatively heavy performance burden today's multi-channel, wideband com-. Diplexer — 2m / 70cm Article by HB9ABX, reprinted from Anode, Club Newsletter of West Rand Radio Club "The names DUPLEXER and DIPLEXER are very similar and frequently confused. Generation 2 and rev 6 are basically the same filter, though the gen 2 PC board does provide additional configuration. Diplexer HF + 6m / 2m + 70cm Update May 27, 2003 The following DIPLEXER separates the following bands: - HF and 6m on one side (= 0 - 52 Mc). 4 kHz IF bandwidth and the ARRL standard test-signal spacing of 20 kHz. Especificação Técnica do Diplexer VHF e UHF + Satélite cpas. Aug 24, 2005 1,562 106 Port Hope, ON Canada. If a 3 way signal splitter will be in use or larger I suggest the LNA 100 signal amplifier > install inline on the. 2280454 Design and Implementation of a Diplexer and a Dual-Band VHF/UHF Antenna for Nanosatellites @article{Leao2013DesignAI, title={Design and Implementation of a Diplexer and a Dual-Band VHF/UHF Antenna for Nanosatellites}, author={Tiago F. Bias-T is nothing more than a simple diplexer but sometimes simple things are not simple to design if you want to have a proper performance. Through the use of a diplexer. We are available during the business hours below: Monday-Friday: 9:00 AM to 7:00 PM CST. The feedpoint gap is 10 mm. A diplexer won't magically make a TV aerial more able to receive FM radio. 45 GHz from a sheet of brass. In case you are hunting for very low (levelled) signals, a low noise preamplifier may be useful. frequency: 5-2150 MHz brand: Holland model: DPD2 28 V DC pass In SAT port (2a max) 950-2150 MHz in/out port VHF/UHF/cable port 5-890 MHz indoor/outdoor a PL I Cat I on high isolation insertion loss: satellite out 2dB and TV out 1dB Return loss 12dB specifically. The signals on ports L and H occupy disjoint frequency bands. In order to use two antennas, one for 2m and one for 70cm, I purchased an MFJ-916B Duplexer to allow me to use only one feed line. Use an HF, 2 Meter or 440 MHz antenna with a separate HF, 2 Meter or 440 MHz transceiver without a built-in duplexer. FAR-D6NF-1G9600-P1BZ-Z datasheet PDF download, view more in RF Diplexers FAR-D6NF-1G9600-P1BZ-Z 3D CAD model library, Taiyo Yuden RF Diplexers FAR-D6NF-1G9600-P1BZ-Z Specifications: RF DUPLEXER 9SMD NO LEAD. Professional-grade digital cable splitter distributes HDTV antenna/digital cable and coax data network signals to 2 devices. Mini-Circuits is a global leader in the design and manufacturing of RF, IF, and microwave components from DC to 86GHz. As for antennas, each antenna has some ressonancy frequency by design, that's the frequency it will pick stronger. This page covers rf circulator basics and provide link to manufacturers of rf circulator. You can probably go as far as 40-50 Watt, but keep your transmissions a little shorter. Dec 5, 2014 - Two DIY dual band antenna's I built for VHF/UHF Stay safe and healthy. The magic-T is not a magic bullet. Add to Wish List Add to Compare. Installing a 1/4 wave on 10 different vehicles will create 10 different SWR results. Discussion in 'Home Brew' started by Moleculo, Dec 14, 2009. Satellite Diplexer for Dish Pro LNB JavaScript seems to be disabled in your browser. Accute Micro Electronics Co. SATCITY is supplier to the aerial and satellite industry offering quality and reliable products at an effective price. 6 kilometers) using a 0. 803683 This RF Diplexer utilizes two ports that allows two different types of filters into one package. Guide To TV Aerial & Satellite Combiners - Diplexers, Triplexers & Quadplexers With all the types of broadcast services that are now available to us. The Dish line is connected on the Diplexer's High Port because Satellite Dish signals are above 900mhz. A mismatch on the output port will reflect a percentage of the signal back into the circulator or isolator causing a higher internal voltage level which will reduce the power rating of the circulator or. Due to the series resonance circuit of C1 and L1, only a small bandwidth can pass to the next stage e. How it works depends on the termination resistance, R1 in figure 1 below. At the common node of a diplexer each filter must work properly while looking into the impedance of the other filter that is also in parallel with the system impedance. Using a pair of 3CX800A7s, this 6- and 2-meter amplifier yields the legal-limit. Advanced Search Results can be further narrowed down by adding more conditions. Here’s a small 2m / 70cm diplexer that is good for up to 10W of power, perfect for working satellites with a HT. Whenever a single antenna is used for both transmitting and receiving, as in radar system, an electronic switch must be used! Switching systems of this type are called duplexers. 99 + Shipping. Access since 01/09/1999. 58 euros on Adverts. Their main purpose is to prevent. This article will be divided into three steps. Ellies is a South African manufacturer, importer, wholesaler and distributor of quality lighting, electrical and electronic products and solutions. One 3 dB attenuator is included in the kit. In this episode of the DIY Sat Rig saga, we’re playing with real power. Impedance: 50 OHM. Ham Radio and Amateur Radio online equipment sales. A diplexer is normally used to combine Sat and regular tv on one coax. Model: #SN 40 IB 500. Build a Helix Antenna After using a 12 x 12 el. You can probably go as far as 40-50 Watt, but keep your transmissions a little shorter. Page 1 of 1 Start over Page 1 of 1. 5mm and the larger ¼", but they are all functionally similar. The feedpoint gap is 10 mm. PMI products and services are available throughout the world with Sales Representatives and Sales Applications Engineers standing by the phone and email to provide support across the United States and worldwide. a 2M/440 dual band and a 10M/6M dual band). HF Double Balanced Diode Ring Mixer with diplexer for broadband HF coverage from 30 MHz down to 1. Other times, users need a custom size not available as a standard cable. MFJ MFJ-916B 144 / 430 MHz Duplexer - 2M / 70cm - 200 Watts - All SO-239 Connectors. Combining the signal from two antennas. So far received 3 votes for a total score of 5. Televes 7452 - Terrestrial (UHF/VHF)/Satellite Diplexer 7452 - Terrestrial (UHF/VHF)/Satellite Diplexer Global DIP1 TV/FM & SAT Diplexer The description of the Labgear HDU681 is a little misleading - it does NOT distribute the signals from your dish around the house merely the RF output from a satellite receiver and terrestrial TV aerials. Thread Status: Not open for further replies. ROHN 45G SELF SUPPORTING TOWER. diplexers, triplexers & multiplexers Lowpass, Highpass and Bandpass filters can be combined to form our state-of-the-art Diplexers/Duplexers, Triplexers and Multiplexers. Simultaneously use a satellite and antenna signal on TVs with only one coax port. 2280454 Design and Implementation of a Diplexer and a Dual-Band VHF/UHF Antenna for Nanosatellites @article{Leao2013DesignAI, title={Design and Implementation of a Diplexer and a Dual-Band VHF/UHF Antenna for Nanosatellites}, author={Tiago F. 95 * Buy It *After Coupons & Promotions. For a diplexer the LP and HP filters are designed differently than ordinary filters that are designed to work in a system Zo (a constant Zo). To the left is the 2x 4-pole SSB filter, to the right is the 2x 3-pole CW filter. By leveraging MACOM’s commercial manufacturing expertise, MACOM believes that SPAR Tiles will help drive cost efficiencies that are required to propel MPAR to mainstream adoption and deployment in the latter part of this decade. A 70-mile vary is pretty nice in terms of vary power. My radio is a Yaesu FT60 handheld, 5W max. Motorola AN762- based Broad Band HF Linear Amplifier with pair of 2SC2290 This amplifier is 1=1 copy of the AN762, but comes with T/R control system, and relays, SWR protection system and switched LPFs for two "bands" (in this case. The magic-T is not a magic bullet. Whenever a single antenna is used for both transmitting and receiving, as in radar system, an electronic switch must be used! Switching systems of this type are called duplexers. There are different variations of this jack, such as the smaller 2. Kodi is a free and open source media player application developed by the XBMC Foundation, a non-profit technology consortium. • Enhances system port-to-port. Coaxial Power Divider/Combiner; Required Frequency Range(GHz) : All. 5 GHz 5-2500 MHz, RG6 Compatible, Works with HD TV, Satellite, High Speed Internet, Amplifier, Antenna, Gold Plated Connectors, Corrosion Resistant, 33526. The UHF pass filter consists of 15pF 1 Turn to ground 5. Eventually I got round to looking at it earlier tonight and inside the diplexer is damp, so I suspect both will need renewed. Similarly, the UHF path (between UHF and com- mon ports) yields low IL at UHF and high isolation to the VHF port. They couple a defined amount of the electromagnetic power in a transmission line to a port enabling the signal to be used in another circuit. Ming Yu Director of R&D Com Dev International Ming. HRO Discount Price: $34. Diplexers are 3-port RF devices, which allow the use of two signal paths on the same transmission line (such as an antenna). The Hopper 1 (original), Hopper 2 (Hopper with Sling), and the new 16-tuner Hopper 3 will all work with a standard Winegard Travler SK1000:. Online electronics shopping in Canada. The Diplexer described here has 2 ports and is made using one low-pass and one high-pass filter. one I am using at the moment loses about %30 of power on UHF. It is different from Duplexer which seperates 2 frequencies on the same band. 88 108 MHz 40W Wideband RF Amplifier MRF171A. The SWR on a single band antenna can be adjusted by adjusting the. The magic-T is not a magic bullet. Your MFJ duplexer can be used two different ways. Simultaneously use a satellite and antenna signal on TVs with only one coax port. 2:1 throughout their respective band, according to my Rig Expert. DirecTV's new Multi-Room DVR experience is impressive, but you may have a hell of a time getting it installed in your home. 0 out of 5 stars 60. Saorsat is the new free tv service from RTE, free irish tv broadcast from 9east, RTE1, RTE2, RTE NEWS 24, RTE Junior and RTE +1 are all free to air on satellite now with RTE2 in HD. Accute Micro Electronics Co. The measurements for element lengths and spacings have been copied from the AMSAT/WA5VJB cheap Yagi design (check the links section). A good diplexer for OTA television is this VHF/UHF Antenna Combiner by Antennas Direct. Diplexer FB608599 CARAVAN & CAMPING BLACK ARROW PASSIVE HYBRID LOG Single Element Inner Prime 6-12 5 -6. All published design s and materials are free for personal and non commercial use. The report describes a two-month effort to investigate spurious intermodulation noise problems generated by various UHF transmitting channels planned for the FLTSATCOM satellite. 40 dB at UHF. 2M and 70CM) and (I think) a diplexer needs a few 10's of MHz separation at a minimum, while a duplexer is for in-band signals (ie. Generally regarded as the tallest mast ever upon a ship this was a remarkable feat of engineering. My radio is a Yaesu FT60 handheld, 5W max. for pricing and availability. The Double Bazooka Dipole is a very efficient single band antenna which is very quiet, and does not require the use of a balun. Jurupa Valley, CA DM13. If a 3 way signal splitter will be in use or larger I suggest the LNA 100 signal amplifier > install inline on the. Product Top Page; Search by Part No. ) sharing the same transmission path so. The Dish line is connected on the Diplexer's High Port because Satellite Dish signals are above 900mhz. Hybrid Coupler Basics 3dB, 90° Hybrid Couplers A 3 dB, 90° hybrid coupler is a four-port device that is used either to equally split an input signal with a resultant 90° phase shift between output ports or to combine two signals while maintaining high isolation between the ports. Diplexer Calculator (Bridged Tee) A diplexer presents a broadband termination to e. It is different from Duplexer which seperates 2 frequencies on the same band. A1 Microwave acquired JMD Technologies in 2010. The following DIPLEXER separates the following bands: - HF and 6m on one side (= 0 - 52 Mc). Yaesu FT100 FAQ / Knowledge Base. 2M and 70CM) and (I think) a diplexer needs a few 10's of MHz separation at a minimum, while a duplexer is for in-band signals (ie. My recommendation for an antenna that will receive both the VHF and the UHF TV signals is the EZ HD antenna >. If the speaker and wires are working you will hear a “pop” sound from the speaker. Thank you very much for bearing with this. Two DStv Zappa decoder. the 8 best diplexer tv antenna in 2020. The AS-2259/GR Antenna is constructed from an aluminum tube mast and a long wire type antenna. DStv Smart LNB(bought separately from DStv office) this cost between 10,000 to 13,000 Nigeria currency. Insertion loss is 1. I completed the filter/diplexer board and did some low power testing of the main amplifier board. Access since 01/09/1999. Motor Vehicle Maintenance & Repair Stack Exchange is a question and answer site for mechanics and DIY enthusiast owners of cars, trucks, and motorcycles. It can be built for around $15-20 (1999 dollars). Reminder, before the Diplexer died - it worked fine. Coaxial cable sold separately. Low-power diplexers used at lower frequencies, under about 500 MHz, are built using discrete components on PC boards (Figure 3). Over the Air (O. It's been a long time since I've chased any amateur satellites. antennas, read on. 1-877-825-5572 M-F 9am-7pm (CST) Weekends 10am-6pm (CST) Call us today to ask us questions or to troubleshoot any technical difficulties. You can combine UHF and VHF antennas with a UVSJ (UHF. CH1 0 - 720 MHz. This is achieved through filters that separate the frequencies of interest, allowing signals at two different frequencies to be sent and received from the same antenna. I am looking at doing a DIY install of Orby. Here we make extensive use of our knowledge of both Low Pass Filters as well as High pass Filters to incorporate both types into one combined filter I call an Antenna Diplexer. A good duplexer can make the difference between hearing AO-27 full quieting and hearing a bunch of muffled static. Hybrid Coupler Basics. That is the basics of frequency. Contact our sales engineers today for more information. Because of this, I elected to build the Microduplexer. A top view of fabricated diplexer at M1 layer before solder mask lamination and surface finish is shown in Fig. HRO Discount Price: $34. A duplexer is most often used to connect a transmitter and receiver within the same band to a single antenna. The article features a 100 w output HF linear amplifier with 10DBm input drive. 2 out of 5 stars 534. UHF repeater 2 x Plessey radios, Polar Electronics Diplexer, Plessey BTR 8000 base station interface with mic and cables, high pass 477. The design comes from KI0AG and was originally published in the November-December 1997 AMSAT Journal. MFJ MFJ-916B 144 / 430 MHz Duplexer - 2M / 70cm - 200 Watts - All SO-239 Connectors. JAK Electronics can supply B39881B7925P810S03 stock quantity,B39881B7925P810S03 price, dispatch in 24 hours. Thank you very much for bearing with this. for pricing and availability. XtraView Installation & Setup Instruction. Impedance: 50 OHM. 10W Micro-Diplexer for 2m / 70cm Here’s a small 2m / 70cm diplexer that is good for up to 10W of power, perfect for working satellites with a HT. Plus 10 National Radio stations. DIY Bias-T. You get exactly the features you choose. A duplexer is most often used to connect a transmitter and receiver within the same band to a single antenna. This DIPLEXER separates 2m from 70cm on the same coax cable. Antenna engineers further divide the bands into things like "X-band" and "Ku-band". 144/432MHz Homebrew Antenna Diplexers. Marian - 10/24/2009. Lavati spesso le mani, mantieni la distanza di un metro dalle altre persone e dai un'occhiata alle nostre risorse per vivere al meglio questo periodo. It is sitting on my work bench, but it may be another year before I finish it. org! Free shipping to 185 countries. This can improve your antenna reception for long-distance towers. Roomcap, CurrentBalun, Diplexer, WINMOR. 100W power handling for the 8 Tx ports, and lower diplexer channels (under 700MHz), and 20W W (500W peak) for the high diplexer channels (over 700MHz). Share this post. oconnorw Posts: 40. The first category is an indoor antenna and the second one is the outdoor antenna. You can try. Forbes takes privacy seriously and is committed to transparency. : RF Repeaters, Fiber Optic Repeaters (DAS Systems), MCPA, Booster, LMR /PMR/DMR Bi-Directional Amplifiers (BDA), TETRA Repeaters, RF Passive & Active modules, etc. 2013; DOI: 10. For faster response, email us at the address below. Phase shifters (90 deg) at AF frequencies 1. A 3 dB, 90° hybrid coupler is a four-port device that is used either to equally split an input signal with a resultant 90° phase shift between output ports or to combine two signals while maintaining high isolation between the ports. Ham radio PDF repository curated by N5DUX. A 1/4 wave is only half an antenna, the other half is the ground plane underneath it. Please note, setting up dstv decoders whether it be single, extra view or the new explora's, can be a daunting task and extremely technical for most people. ) BT/W-LAN; GNSS; WiMAX; UWB/Transfer Jet; DVB-H/ISDB-T; Others (Sub-GHz, MoCA, DSRC etc. The diplexer is designed to function as both a bandpass filter for each band and to either split one path into three or to combine the bands back into one RF feed. The plan is feasible if the two devices operate on different frequencies. This HDMI to CAT6 transmitter (Tx) and receiver (Rx) kit can extend HDMI digital signal through CAT-6 cables. Model:RF-RG6100BK. If you want to see more rf amplifiers. Cheap and Easy Yagi Satellite Antennas This is a collection of three articles by Richard Crow N2SPI that originally ran in the AMSAT Journal during Summer and Autumn 2006. I have often wondered if a diplexer is smart enough to have two different signals(one filtered) being fed down a single coax, then separated again. Discussion in 'Homebrew and Kit Projects' started by M6YAZ, Mar 29, 2013. The IMD, two tone dynamic range, (tones spaced 20 kHz apart), increased from 97db to 106 db with the new mixer and at 2KHz tone spacing it is now 103. © XCOM Avionics 2007 No part may be reproduced without the written permission of XCOM Avionics Dummies guide to aircraft antennas. Ham radio PDF repository curated by N5DUX. Dec 12, 2012 #9. The design goal was to hold the third-order intermodulation below. The diplexer plate stops the power getting through for the masthead amp. Use non-metallic boom (wood or orange PVC pipe). Hams enjoy building different designs and if you browse the net you will find a lot of interesting schemes. 6dB 2 YEARS PCB Diplexer FB608025 TRU-BAND VHF PASSIVE BLACK ARROW LOG Periodic. This describes the planning and construction of a 600W HF amplifier for Ham radio. All HDTV/digital signals are still broadcast on the same frequencies used by the old analog broadcasting system, which you may remember was transitioned to digital in 2009. The diplexer is designed to function as both a bandpass filter for each band and to either split one path into three or to combine the bands back into one RF feed. 15 dB at VHF and 0. You can probably go as far as 40-50 Watt, but keep your transmissions a little shorter. Generation 2 and rev 6 are basically the same filter, though the gen 2 PC board does provide additional configuration. The two end feed positions have gain loss around 1. I am trying to do this DIY instead of taking to a AV shop - appreciate any thoughts or schooling on how this stuff works. Ham Radio and Amateur Radio online equipment sales. 1733 | Email. This is compatible to HDMI v1. Lavati spesso le mani, mantieni la distanza di un metro dalle altre persone e dai un'occhiata alle nostre risorse per vivere al meglio questo periodo. Tristar Diplexer coaxial aerial splitter - B&Q for all your home and garden supplies and advice on all the latest DIY trends. 10 Watt Duplexer for the 146/437-10 Satellite Antenna - SMA. RF Microwave Blog. Self Install DIY Kits. adj belonging or relating to a system that. MFJ-916B has low loss SO-239 connectors. ) sharing the same transmission path so. Cable TV Filters and Diplexers; Captive Screw Cables; See All. RF Signal Generator - VFO. The DStv Smart LNB has been specially designed for use in DStv installations non-commercial (Single Unit Installations) and has been tested with our decoders. An IF/AGC amplifier that features an 82-dB AGC range can be built using just four active components (see the figure). for pricing and availability. diplexer switch satellite + cable or tv antenna digital combiner rg6 uhf hd dtv 1 out of 5 stars 1 product rating 1 product ratings - DIPLEXER SWITCH SATELLITE + CABLE OR TV ANTENNA DIGITAL COMBINER RG6 UHF HD DTV. Professional-grade digital cable splitter distributes HDTV antenna/digital cable and coax data network signals to 2 devices. I can always buy another Diplexer I guess, but still want to see if I can use the newer crossover cable that came with the Focals. The AS-2259/GR Antenna is constructed from an aluminum tube mast and a long wire type antenna. Swiftswan Waterproof 2 in 1 2 Ways Satellite Splitter TV Signal Cable TV Signal Mixer SAT/ANT Diplexer Light-weight & Compact £0. The peak power breakdown value of a circulator or isolator is reduced by an increase in load mismatch, altitude, temperature, or pulse width. http://www. Diesel Particulate Filter (DPF) Ash Cleaning This CTS Knowledge Base article summarizes the most prevalent DPF ash cleaning process available. - Switching or sampling is a time-varying process. Product Description: Sanland's DX85S258 is a low cost ,Dip diplexer filter designer for CATV,CPE,STB,cable modem and set top box applications. Range of Amps and Diplexers for satellite and terrestrial installations. org Cheap Yagi for Uplink Build This Cheap and Easy Satellite Uplink Antenna by Richard F. American Radio Supply, LLC P. Antenna diplexer for 145 and 434 MHz This diplexer can be used for combining 2m and 70 cm rigs (such as Moppe MC25 and RD58) into a common antenna or alternatively for using separate 2m and 70 cm antennas with a dual-band 145/434 MHz rig. Ellies is a South African manufacturer, importer, wholesaler and distributor of quality lighting, electrical and electronic products and solutions. Build IF/AGC Amp With Four Parts. ; Its also possible to use a splitter to divide the signal instead of a diplexer, but this causes significant signal. • Enables combining of control stations. Features: - F-Type (female) connector termination. TV outlet wall plate foxtel dual f 3 ghz & pal with wall clip HDTV approved DIY. A diplexer won't. At this stage I suggest that you read my article on "A Satellite Tracking Antenna" to get an idea on…. If it is a DIY 1/4 wavelength, then why not 2 separate antenns? This will simplify install, and give optimum performance. RG-6 ('RG' is an old military term for Radio Guide/Grade) is the industry standard, but there are other considerations. Ellies is a South African manufacturer, importer, wholesaler and distributor of quality lighting, electrical and electronic products and solutions. Keep in mind the SBB-15 is a 1/4 wave on the 6M band. Plenty of breathing room + Gain. Or use 2 equipments (one VHF and one UHF) when used on the side of the transceivers. macoantennas. for a year or so for satellite work, mainly AO-13, AO-10, UO-22 and KO-25. Diplexers for higher frequencies and higher-power levels, on the order of 1 GHz/10 W and above, are usually built as modules or hybrid devices using higher-performance RF components. CalibreRF is a specialist technical sales company. It’s a 6 cavity Diplexer (2 notch + 1 bandpass for each path), so I expected a very good out-of-band attenuation, which is a very interesting feature in installation sites with strong RF signals coming from other transmitters. In the case of an HT working AO27 the duplexer separates the signals for the 70 centimeter. On the face of it, using a duplexer to reduce the number of antennas required by the system sounds like a great idea. Principal Engineer Ian Graham explores a common question in radio system design: whether to deploy duplexers or to use separate transmit and receive antennas. HF Double Balanced Diode Ring Mixer with diplexer for broadband HF coverage from 30 MHz down to 1. RF Signal Generator - VFO. DIY Diplexer. Multiplexer – Diplexer This RF Diplexer utilizes two ports that allows two different types of filters into one package. The feedpoint gap is 10 mm. 08, 2016 (GLOBE NEWSWIRE) -- Vectron International , a leader in the design and manufacture of Precision Oscillators, Timing Solutions. 95 * Buy It *After Coupons & Promotions. Concept of glass 3D IPD diplexer. Dish TV satBox S7070r Freeview. UHF VHF Antenna Combiner. The output rf power is somewhere around [] BLY94 100W RF Power Amplifier. A diplexer is a device that combines radio frequency inputs from two or more radio transmitters into a single output, or, when used in the opposite direction, divides a single RF input into two or more outputs based on frequency. 7 out of 5 stars 5. Price Match Guarantee. DIRECTV SWM Installation Guide For DIY Amateurs & Pros It´s called SWM technology and it´s been standard for DIRECTV installs for about three years. input port should have some filtering ahead of it leading to the 50 ohm mixer load. Posted May 3, 2017. 100W power handling for the 8 Tx ports, and lower diplexer channels (under 700MHz), and 20W W (500W peak) for the high diplexer channels (over 700MHz). This is achieved through filters that separate the frequencies of interest, allowing signals at two different frequencies to be sent and received from the same antenna. com in a single category. The functional schematic diagram is shown in Fig 1. This is a picture artifact known as dynamic false contouring, and it is usually seen on older plasma, DLP rear-projection and some. API utilizes Suspended Substrate, Lumped Element and Cavity filters in our Multiplexer (MUX) designs. All of the Tek mixers are two port- an input and IF. Electromagnetic waves with the frequency range from 30MHz to 300MHz are called VHF. Dec 5, 2014 - Two DIY dual band antenna's I built for VHF/UHF Stay safe and healthy. The Dish installation, the decoder installation, and finally a hint about account migration. Viewed 2k times 16. You can combine UHF and VHF antennas with a UVSJ (UHF. "A diplexer is a passive device. The term prime focus feed is used to describe this class of feed system. SWR Bridges I needed some circuitry to protect my “absolutely failsafe” higher power (up to 20W) HF lab amps against output mismatch, selection of an incorrect frequency in an output filter bank, missing connections, wrong antenna type and what not of other mishaps I have not forseen so far. I think that this antenna will appeal to people who, like me, want to minimise their mast numbers, or who own the Wouxun 950 quad band FM rig. WA5VJB "Cheap Yagis" Originally Published in the Central States VHF Society Conference Proceedings, 1994. The antenna works with any dual-band UHF-VHF radios 10. Resistors are 50/0-tolerance carbon-film or -composition units. We share a lot of design ideas images & pictures about "diplexer design". This article will be divided into three steps. SweetPea11 May 15, 2019, 1:45am #3. Build a 2-Meter Duplexer Walk up to any ham who has already put a repeater on the air and ask him, "What's the toughest technical problem you had with it?" He will probably say that obtaining sufficient signal isolation between the transmitter and receiver was the toughest. This is compatible to HDMI v1. 1733 | Email. The diplexer plate stops the power getting through for the masthead amp. Antenna engineers further divide the bands into things like "X-band" and "Ku-band". Phone DSTV; 083 900 3788. The 500mA 5V. Switching the antenna between the transmit and receive modes presents one problem; ensuring that maximum use is made of the available energy is another. Active 1 year, 11 months ago. Input band pass filters Input band pass BP filters at mixer input are very important part of DC receivers. MSRP: $89. The small loss caused by the diplexer is something I am willing to accept. OneExpert CATV. Luckily, it comes with the Smart LNB. #N#POPULAR CATEGORIES. Do not break the center conductor. Principal Engineer Ian Graham explores a common question in radio system design: whether to deploy duplexers or to use separate transmit and receive antennas. (3) Write a review. Wiring Diagram. As I said, I got the Explora 2A at a promotional price. Ellies is a South African manufacturer, importer, wholesaler and distributor of quality lighting, electrical and electronic products and solutions. Hello Guys I would like to make my own Diplexer for VHF and UHF use I dont have any experience with these except the commercial. This 1 – 30 MHz common mode current filter is optimized for the 80 and 160 meter band. A Magnetic Field Probe is usually used with a spectrum analyser or an oscilloscope. Talley stocks a wide variety of infrastructure products. Swiftswan Waterproof 2 in 1 2 Ways Satellite Splitter TV Signal Cable TV Signal Mixer SAT/ANT Diplexer Light-weight & Compact £0. Especificação Técnica do Diplexer VHF e UHF + Satélite cpas. As one may be able to discern, C2 and C3 are in parallel to make 192 PF, C5 and C6 are in parallel to make 60 PF, and C7 and C8 are in parallel to make 163 PF. Marian - 10/19/2009. The UHF pass filter consists of 15pF 1 Turn to ground 5. Whenever a single antenna is used for both transmitting and receiving, as in radar system, an electronic switch must be used! Switching systems of this type are called duplexers. The Duplexer is a device which separates 2 frequencies within the same band while the Diplexer is a device which separates 2 different bands. The term prime focus feed is used to describe this class of feed system. Various frequency ranges, topologies, packaging styles and configurations available. It is different from Duplexer which seperates 2 frequencies on the same band. Please note, setting up dstv decoders whether it be single, extra view or the new explora's, can be a daunting task and extremely technical for most people. This link is listed in our web site directory since Friday Aug 10 2012, and till today "Home Made duplexer" has been followed for a total of 1380 times. the 8 best diplexer tv antenna in 2020. It uses a simple two-transistor peak. I have since added diplexers to all the receiver input band-pass filters in the HBR-2000. Similar to Coupler Diplexer Glideslope 505 on eBay. THE ARROW ANTENNA Then, we are searching for a linear polarized dual-band antenna lightweight enough to be handled easily with our hand to aim it at the satellites. There are different variations of this jack, such as the smaller 2. Usually a diplexer is placed to economize from the need of a second expensive RF transmission line cable. One 3 dB attenuator is included in the kit. The ClearStream 2V. A couple of old cavity resonators were discovered in the back shed. The designed diplexer was composed of a low-pass filter (LPF) for low-frequency band and a high band-pass filter (BPF) for high-frequency band. I'm trying to create a diplexer for the 2m and 70cm bands so that two antennas can share a feedline to my "shack". This DStv Smart LNB is high band capable, ensuring that your installation is capable of. Product Top Page; Search by Part No. Bias-T is nothing more than a simple diplexer but sometimes simple things are not simple to design if you want to have a proper performance. W4RT OPF-ICOM-CW-DIY-300: 1: 2010-09-08: $119 (4) W4RT OPF-ICOM-CW-DIY-500: 2: 2008-10-26: $99 Comet CF-4160 Duplexer / Diplexer Jan_Jenca 2 Meter Bandstop (Notch. Use non-metallic boom (wood or orange PVC pipe). Bow-Tie antennas aren't really Log Periodic antennas; however, the bow tie (or butterfly) antenna makes a good starting point to begin talking about Log-Periodic antennas. A is a compact SAW diplexer for use in any navigation system application using the GPS/GALILEO L1, L2 & L5 bands. You can order the the circuit board and all the components for a project with just a few clicks. My radio is a Yaesu FT60 handheld, 5W max. Online electronics shopping in Canada. The main category is Duplexers and diplexers that is about Duplexer and diplexer. Listing #: 2543046124 North Shore, Auckland, NZ. What I designed and built was a diplexer that would allow ~38 Mhz and below out port 1, with ~38 MHz and above. Tristar Diplexer coaxial aerial splitter - B&Q for all your home and garden supplies and advice on all the latest DIY trends. If you want to see more rf amplifiers. ShowMeCables offers a variety of coax diplexers/combiners for satellites/antennas. R56 MINI Cooper Hatchback: 2007, 2008, 2009, 08/2010. Posts; Latest Activity My ADS-B antenna is also right next to the TV aerials' diplexer/masthead. The bias-T that we need should be quite broadband and this is not a trivial task. A) Antenna Stacking or Ganging You can combine more than one antenna to either get a stronger gain or combine them to point at different towers to gain more direction for each antenna and combine the signals from more then one source!. Generally, if the one antenna has high SWR at the other antenna's frequency, then this will act as a selector of which antenna gets most of the power from the coax at that frequency. For inquiries, email me at du1au. This combination can be altered based on customer specifications. Originally had just an aerial on the roof picking up BBC but wanted to pick up RTE also so installed another aerial in the roofspace. Problem is that only way to move/extend cable which is connected to VM box is to run it under floor but not possible to do without lifting floor boards which is not an option as that room is not going to be refurbished in the nearest future, so the only option I have to use second VM cable which runs. Let's build these filters and diplexers in your integrated PolyStrata® backplane to make a phased array front end an E-band point-to-point radio an ultra-efficient transceiver a micro network analyzer ask us and we will show you how. Discussion in 'Home Brew' started by Moleculo, Dec 14, 2009. The antenna feeds a diplexer that separates the transmit. You must then use a special splitter, called a diplexer,. JAK Electronics can supply FAR-D6NF-1G9600-P1BZ-Z stock quantity,FAR-D6NF-1G9600-P1BZ-Z price, dispatch in 24 hours. This approach with the added 40 meter BPF, 40-80 Diplexer or 40-80-160 Triplexer allows to use 4, 5 or 6-Band antennas. The antenna works with any dual-band UHF-VHF radios 10. I tried putting another 51 Ohm resistor in series with that cap to ground, in an attempt to imitate one of the "diplexer" circuits I found online in a "DC 'Popcorn' Receiver" schematic, but there was noticeable AM bleedthrough(!) When I removed the resistor and put the bypass cap straight to ground, the AM stuff disappeared. We have a selection of high-performance antenna TV aerials suitable for medium to weak signal areas. The antenna can be broken down for easy storage and transportation and can be assembled using a single screw driver. DIPLEXER SWITCH SATELLITE + CABLE OR TV ANTENNA DIGITAL COMBINER RG6 UHF HD DTV. the 8 best diplexer tv antenna in 2020. [4] "Crawling moss" is seen in dark areas of a movie or TV show. If a 3 way signal splitter will be in use or larger I suggest the LNA 100 signal amplifier > install inline on the. MFJ-916BN has type N connectors. Dc PQDI-6500 Proeletronic - LojaTotalseg. Yaesu FT100 FAQ / Knowledge Base. What are the advantages using a alloy/diecast box VS a plastic/abs one. HamCity has more than 30 years of experience in the amateur radio equipment business! Please visit us today for all your ham radio needs!. Masthead Amplifiers. "A diplexer is a passive device that implements frequency-domain multiplexing. It is sitting on my work bench, but it may be another year before I finish it. DIPLEXER 2m / 70cm Update May 27th 2003 DUPLEXER - DIPLEXER The names Duplexer and Diplexer are very similar and frequently confused. There are mainly 4 types of filters: Low-Pass(LPF), High-Pass(HPF), Band-Pass(BPF), Band-Notch(BNF). If you have only one input and two cables coming in, you need a switch. I got a 36" FTA dish, OTA anttena, and all the cabling ran. MSRP: $89. [email protected] ROHN 45G SELF SUPPORTING TOWER. I'm trying to create a diplexer for the 2m and 70cm bands so that two antennas can share a feedline to my "shack". Hybrid Coupler Basics. specializes in design and manufacturing of high-end RF systems and modules. Combining the signal from two antennas. RF Power Amplifiers. Diplexers for higher frequencies and higher-power levels, on the order of 1 GHz/10 W and above, are usually built as modules or hybrid devices using higher-performance RF components. This can improve your antenna reception for long-distance towers. This combination can be altered based on customer specifications. Remember that you will have to point this antenna by hand for 15-minute satellite passes. UHF and VHF frequencies from different aerials can both be sent down the one cable by using a diplexer to combine the 2 signals. Bow-Tie antennas aren't really Log Periodic antennas; however, the bow tie (or butterfly) antenna makes a good starting point to begin talking about Log-Periodic antennas. Leao and Vincent Mooney-Chopin and Christopher W. 144/432MHz Homebrew Antenna Diplexers. Your price for this item is $ 17. VAST Satellite TV specialist supplier of portable, mobile caravan satellite tv kits, solar extraction exhaust fans, solar panels and sat tv dishes for camping. 63,71€ (VAT excluded) Bias-T DC Injector 10 KHZ - 150 MHZ. Simultaneously use a satellite and antenna signal on TVs with only one coax port. You know what is there, and can add or change at any time. One of the most striking features of the ship upon her arrival upon the North Sea in 1983 ws the magnificent 300 foot mast.