Homebrew 23cm Transverter



These two transverters are, ironically, equivalent in power output and receiver function though they operate on different bands. This banner text can have markup. This post will be part of a group explaining the basics about microwave transverters, what they are used for and the details of putting a 23cm transverter system together. The new design v 2. New - 1296 MHz Transverter Update and Enhancements A Homebrew Ratiometer for Antenna Measurement, or a Handheld Network Analyzer. The 23cm transverter's default configuration is…. CMS ohne Datenbank - CMSimple ist ein Content Management System, das keine Datenbank braucht. I'm using an old LNB with the electronics removed as the feed. The FT290R2 is a great 144MHz rig as an IF for portable microwave work, featuring all-mode, battery or external 12V operation and easily handled output power. Wideband receivers rarely have enough filtering to reject pagers signals just above the 2-meter amateur band, resulting in strong intermodulation products, or intermod. 00 Here is a video showing how to flow-solder your LDMOS to the spreader. KK6MK's uW page. So what is a Transverter and why we use them? To use frequencies above 1Ghz there is no off the shelf equipment available or the equipment …. Initially, signals with WA6EJO’s 23cm handheld were weak so we ended up making our contact with his 10 watt 23 cm mobile rig. It's a 145MHz IF with a L. Homebrew Yagi for 1296 MHz DX by Heinrich F. Different models cover Amateur bands from 160 meters to 23 cm, and allow you to join in the excitement of operating on all of the modes—SSB, AM CW, RTTY, PSK, and dozens of other digital modes. 233-239 For 2. - The LO is a homebrew design and is reflocked to a 10 MHz GPS derived signal using a "VE1ALQ" PLL. 4 GHz I moved to HF and ran a few contacts on 7023 khz using the Pixie half watt morse transceiver (on a 50 x 50 mm PCB), then moved to the KX3 and ran contacts on 40m and 80m SSB and CW. KK6MK's uW page. He connected up the SSB Electronics transverter and homebrew loop Yagi with no difficulty, and soon worked VUCC by running grids around Lake Superior. Homebrew Yaesu Rotor Controller by Sigurd Kimpel, KJ1K - additional files and Arduino source code on disc Power Amplifier for 23 cm - Concept to Prototype by Wayne Getchell, VE3CZO Experiments using Mother Nature's Elevated Antenna Range by Dick Frey, WA2AAU Modern Oscilloscopes by John Seney, WD1V. FABRICANTS ET DISTRIBUTEURS. To Order Call: 386-364-5529 19519 78th Ter. We simply take a lot of old ideas and put them into a sort of mental kaleidoscope. Information on amateur radio station GW8ASD. It would work the whole 70 cm band at 432 to 437 MHz if your base radio has the 28 to 33 MHz band. 4 GHz Upconverter. This was the sole 23cm contact for N6ZE. Reckemeyer, DJ9YW - [email protected] Reviewed by Bob Allison, WB1GCMAssistant Laboratory [email protected] As you can see, this one has the feed arm at the top which makes it a lot easier to mount to the mast. For portable outdoor use it has to be practical and small, but rugged at the same time, able to be powered by a Pb-gel battery, and to be used with or without an external precision frequency standard. My Equipment. Figure 1 — Yagi pairs for 23 and 33 cm on 6-foot booms. 000 MHz available on a sale. The transverter was fired up with FM selected on the driver transceiver with a 50 ohm dummy load on the through-output of the coupler, and the meter went over-scale Even with full series potentiometer resistance in circuit, the meter was still being supplied with too high an input. The KiWi has a function to re-label the frequency scale to match the original frequency. My best long distance 23cm contact in only four weeks of operating on 23 cm. - IF frequency is 144 MHz. Please refer to the 23cm ( 1296MHz ) Transverter Webpage and 23cm Block Diagram which will explain in more detail what is required to construct a complete Transverter. I used an ICOM 970A as the 430 MHz IF, to a homebrew transverter. Hi there I like to build a Homebrew 2m, 70cm mobile antenna with a BNC plug to put onto a magnetic base that has the BNC ready for it. I read various reviews and product descriptions and decided on purchasing a SG Lab 1296MHz transverter. I have the 900MHz and 1. The cavity amplifier unit design is based on a military UPX-4 pulsed L-band transponder transmitter. On transmit the output of the 2m radio in is passed through an attenuator to limit the signal low enough to be mixed with the LO of the transverter (144Mhz + 1152Mhz = 1296Mhz FIG 1. 29dB - Feed. The diagram of a powersupply intended for a WS19 transceiver or a BC312 transceiver. 70 MHz Transverter. We were able to tune these very quickly and easily using the new Chinese KC901H network analyser (more about that in another post). A more thorough description of the circuit design can be found in the original 50 MHz transverter article found below. Hello, everyone. 144 MHz - 146 MHz 200 W Transmit - Receive Low Loss Narrow Bandpass Filter. My aerial for the band has to share its location with aerials for 10m, 23cm and above. Sunday 18 June 2017. Look for the Wiltron. •Transverter -Transmitting / Receiving converter -Transmit •VHF / UHF IF source (typically 144 or 432 MHz) mixed with LO to produce microwave signal •usually power amplifier -Receive •microwave received signal mixed with LO to produce VHF / UHF output •usually RF amplifier -Usually image filter. 144 MHz to 28MHz Transverter - LT2S. Transverter 004: 144 to 1296MHz transverter (OE9PMJ board) K2UYHのEMEニューズレターでPeterが23cm用のコンパクトなトランスバータキットを販売していると知り、早速注文した。. 3 W 9 cm (3399 MHz) FT-221. Many links of all kinds. News Release IC-9100 High-Performance "All Rounder" Transceiver Now Available for Order Taking BELLEVUE, WA – The IC-9100 (aka 9100) is the new Icom HF/6M/2M/70CM and optional 23CM transceiver than many hams have been patiently waiting for. What is the most common portable QRP SOTA rig around and ideal to work as a low power IF on 2m and 70cm, yep the Yaesu FT817!. This is the manuals page for Ssb Electronic. The noise figure is approximately. 25 meter and 33 centimeter bands of the amateur radio spectrum are forgotten bands. Homebrew Group Newsletter #58 February 2019 Compiled by Rob Whitmore VK3MQ In recent times several amateur radio satellites have been launched with uplink frequencies in the 23cm band. The 33 centimeter band offers excellent building penetration characteristics since the wavelength is relatively small and can fit through windows more easily than signals lower in frequency. One mixer is. 1296 MHz Transverter - Right Side Up Simple and Cheap Paul Wade W1GHZ ©2008 [email protected] Projects and designs. I purchased one of these radios a few months ago when I read online that it was being discontinued, and I wanted to get a new one before they were all gone. Almost 20 years ago I built my own 23cm transverter – DF8QK. 144/28 MHZ TRANSVERTER BOARD *** TO BUY WITH CONFIDENCE, YOU ARE GETTING PAYPAL PROTECTION ! *** TO NOTE PLEASE: I also have the 148/28 MHz transverter with LO of 120. News Release IC-9100 High-Performance "All Rounder" Transceiver Now Available for Order Taking BELLEVUE, WA - The IC-9100 (aka 9100) is the new Icom HF/6M/2M/70CM and optional 23CM transceiver than many hams have been patiently waiting for. 23cm Initials were HB9CW, SP7DCS, OK1CA, SP6JLW, OK1KIR, ES5PC, OZ4MM, F5SE/P on CW plus G4DDK and ZS6JON on JT. We all pray for a duct!. This is a 12V (nominal) version of my own transverter, who's PA runs from 26V. The transverter requires 2 watts of drive from a 40 meter cw transceiver and outputs 2 watts on 6 meters. 40 m dish and 150 W enough to do the job or is that too marginal ? And what about qrm on 23 cm ? I can imagine that with a larger dish the band is much more cleaner as with a short yagi. 2GHz Antenna Single-band 1240-1300MHz mobile antenna D-STAR Specific Freq. KH6HME beacon frequencies: 50. With the 'new' transverter module out of the defunct 8W transverter it should be possible to get back to a full 10W output. They had the great idea of including a Microwave Arena, consisting of a square of ten tables, set up inside Hangar 1 at the RAF Cosford Museum. Recent GQRP posts were talking about mixers at HF and it made me remember I had a transverter project for 1. What is the most common portable QRP SOTA rig around and ideal to work as a low power IF on 2m and 70cm, yep the Yaesu FT817!. One is my microwave band IF rig. 40 m dish and 150 W enough to do the job or is that too marginal ? And what about qrm on 23 cm ? I can imagine that with a larger dish the band is much more cleaner as with a short yagi. 5 watt 23 cm 1296 MHz transverter from SG-Lab in Sofia Bulgaria. 2 Ah LiFePO4 battery. 1271 23cm Transceiver: Bought used at MAE. This article also applies to: Yaesu FT-7800, FT-7900, FT-8100, FT-8800, and FT-8900. EME Ham Gallery - 432 MHz. 23 cm My favourite band! Homebrew transverter comprising G4DDK001 1152 MHz source (Microwave Handbook volume 2, RSGB) , recieve converter using Toko helical filters, MAR-6 MMIC amplifier and RMS-2 mixer, and DF8QK (VHF Comms 4/77) transmit converter. The 70cm transverter is a proprietary bought in unit giving about 10W O/P, whereas all the others are 'home-brew'. Of course you can work the incredible DX if you spend $20k on a high-end radio, big antenna, and. Tonight dragged the transverter from the loft and connected the transverter to my Yaesu FT-817 in the hope of hearing local stations taking part in the 23cm contest. When the 70 MHz band was introduced in Denmark during 2003 we all started up using whatever equipment available: 4 meter PMR radios, Yaesu FT-847, ready made transverters brought in from the UK. 70 MHz to 21 MHz Transverter - DF2FQ. Wideband receivers rarely have enough filtering to reject pagers signals just above the 2-meter amateur band, resulting in strong intermodulation products, or intermod. Transverter for 23cm amateur radio band. , Live Oak, FL 32060 USA Monday-Thursday 10am-6pm Eastern. 000 MHz available on a sale. Transverter kit I have decided to build the Kuhne MKU 13G2B kit. There is also provision for MP-3 download directly to MP-3 Player. 1296 MHz Transverter - W1GHZ. If you need more details, like a board layout, or any questions please ask. 5 watt 23 cm 1296 MHz transverter from SG-Lab in Sofia Bulgaria. It uses an SMA feed. The 23cM yagi & microwave antennas plus transverters ready to be erected. Homebrew Group Newsletter #58 February 2019 Compiled by Rob Whitmore VK3MQ In recent times several amateur radio satellites have been launched with uplink frequencies in the 23cm band. Receivers A simple crystal receiver, every homebrewer build one of these. You won't find any data on a FTV-750 as it was a home brew transverter built into a Yaesu speaker cabinet. SDR-Kits is pleased to introduce a 600 MHz Antenna Analyzer Kit, designed to meet the requirements of all Radio Amateurs. The amplifier uses a two section filter that has a wide tunable frequency range of 960 to 2000MHz, and provides excellent filtering for a very clean output. 5 watt 23 cm transverter from Hristiyan LZ5HP in Sofia Bulgaria. 23cm NBFM transceiver This transceiver is published in the december 2015 edition of Electron, the monthly magazine of the Veron (in Dutch) and in the july 2017 edition of Funk Amateur (in German). The operating environment. "Stability" issues alone are staggering. Home Brew Ham Projects DL4YHF's homebrew homepage EI9GQ Home Brew Radio Page G3WDG Developments Page de DF9CY (préamplis, transverters) Site avec des archives de la revue Dubus. The station set up: Elecraft K2, homebrew high dynamic range transverter (built by DL7AKL), HA1YA high power amplifier ME-750VB incorporating a GU-74 tube and Amilo PC. ARRL Product Review of the M2 6-Meter HO Loop Antennas. 50 MHz Transverter, A 6M Transverter, HRIS2, 2M to 10M receive converter, 50MHz-Transverter 10m/6m from DK7ZB. Homebrew Group Newsletter #58 February 2019 Compiled by Rob Whitmore VK3MQ In recent times several amateur radio satellites have been launched with uplink frequencies in the 23cm band. Dieser Bausatz wurde von einigen Funkamateuren im Sommer 2011 in einer. 8 Sep 2010 - Home-Brew Stroke-P by John Cooke GM8OTI Main Menu. La premire tape consiste dfinir le microstrip. RF engineer, programmer, Linux nerd, radio ham (M1GEO), experimentalist!. The transverter was fired up with FM selected on the driver transceiver with a 50 ohm dummy load on the through-output of the coupler, and the meter went over-scale Even with full series potentiometer resistance in circuit, the meter was still being supplied with too high an input. 13 cm 23 cm. Later I could compare the homebrew TG with my HP141 and the. THE AMERICAN RADIO. For this transverter a good fit is a 5th overtone 92MHz crystal, that multiplied by 108 goes to 9. This is my first post here. Banda de 70cm o "incalzesc" in concursuri cu un SSPA 500W "homebrew", iar pentru 2m am un SSPA de 1KW cu BLF188XR. He again operated from his driveway above Foothill Blvd. Revised by DB6NT, this transverter features excellent technical data and is suited for portable or stationary activities due to its small mechanical dimensions. A design by Roger G3XBM. The probe was nearly 500 mm long, rather than the 170 mm in most UHF filters. Sunday 18 June 2017. Anglian 144MHz Transverter Having moved away from various VHF / UHF transverters and used the TS-2000 and FT-847 “shack-in-the-box” 160m <> 70cms transceivers for many years, with both giving excellent results, it seemed at first a strange decision to embark on a project to build a new 2m transverter. 144/28 MHZ TRANSVERTER BOARD *** TO BUY WITH CONFIDENCE, YOU ARE GETTING PAYPAL PROTECTION ! *** TO NOTE PLEASE: I also have the 148/28 MHz transverter with LO of 120. By use of modern semiconductors and refinement concerning cooling and the easy replication of the circuit a further optimisation of the Transverter had been possible. 000 MHz available on a sale. If the message is relate to an article, the article can be selected next to each message. Transverter 004: 144 to 1296MHz transverter (OE9PMJ board) K2UYHのEMEニューズレターでPeterが23cm用のコンパクトなトランスバータキットを販売していると知り、早速注文した。. John's homebrew pages A 13cm (2. 2 volt 4S 4. Al is using an ICOM IC-706 IF at 144. This is a test of my 1296 Mhz 160W Power Amplifier than I built, based in a W6PQL pallet, use 2x MRF286 transistors, built in power supply (110/220Vac), PTT control, temperature control and TX/RX. EME Ham Gallery - 432 MHz. http://www. The unit now comprises an SG Labs transverter (2W output( and a PE1RKI amplifier. The diagram of a powersupply intended for a WS19 transceiver or a BC312 transceiver. This is my current station setup. This year, the annual Telford Rally had a definite microwave" flavour"! The organisers and club officials at the Telford club include well-known microwave operators Martyn, G3UKV and David, M0VZT. On receive I have a second stage Down East Microwave 10 GHz receive preamplifier, and on transmit I have a Siemens RW1125G TWT. Except the HP net-work analysers which, in order to get a better dynamic range, use an AC cou-pled amplifier and AM modulate the RF source at 27. It is impossible. The subscription price is included in the membership dues. A local oscillator (LO) feeds a power splitter that drives a pair of mixers. The Kuhne transverter covers 1296-1298 MHz and the IF is at 144-146 MHz. 6) and passed through a band pass filter to produce the final output frequency (1296Mhz FIG 1. I used an ICOM 970A as the 430 MHz IF, to a homebrew transverter. (Up through the high microwave bands - >76 GHz) Directive Systems is a source for various antennas and antenna components from 6 meters through 10 GHz. 13 cm 23 cm. A Simple 5 band CW Transceiver by Rick Campbell KK7B (415,411 Bytes, PDF file) Microwave Update, 1994, pp. For portable outdoor use it has to be practical and small, but rugged at the same time, able to be powered by a Pb-gel battery, and to be used with or without an external precision frequency standard. Tonight, I had my first QSO on the 23cm band with it with two friends who both have the same transverter, G7UVW and M1GEO. 50MHz Elecraft K3 100 Watts to a 5+5 element YU7EF dualband Yagi. Noise Figure Measurement using Standard Antennas Besides using noise figure measurement equipment for adjusting a homebrew receive system there is another and cheaper method to measure the noise figure of preamps for 70cm and 23cm (and up). Finding that it challenged his mind and created opportunity to learn new things, Paul discovered SOTA, Summits on the Air, and outdoor operating. Whether or not I'll be able to resist jumping straight to 3cm at some stage we'll have to see. Transverter Bild 4 Bild 1 Bild 3 Bild 6: 24 GHz Transverter mit 146 MHz ZF Bild 2 Bild 5: Zdenek, OK2DFC am 50 GHz Spektrumanalyzer Die Veranstaltung findet in der Schule für Elektronik statt (Bild 1) und be-herbergt auch die lokale Clubstation OK2KDJ. simple "home brew" radio equipment, and portable operation. I'll add things as they become available, and as my memory functions. Information on amateur radio station GW8ASD. Whether or not I'll be able to resist jumping straight to 3cm at some stage we'll have to see. Hi Lonecrow, You could add a VHF down convertor ahead of the KiWi to shift a block of frequencies say 110 to 140MHz down to 0 to 30MHz. This forum message list include all message for that is related to TS-2000, this include message that also is related to articles. at present preparations to control this disk. Building the receiver section of the transverter:. Member Capability Database. These are connected to the dish via [1] a short run of miniature. 3GHz) transverter with 432MHz IF I decided to try to move up the microwave bands one by one - so 13cm comes after 23cm. Si trova in kit o già montato e collaudato. To Order Call: 386-364-5529 19519 78th Ter. 275A 2M Transceiver (2) I still have these. A transverter just an extra stage another with mixer and oscillator. By use of modern semiconductors and refinement concerning cooling and the easy replication of the circuit a further optimisation of the Transverter had been possible. 23cm cavity trippler with 2C39 tube. The other has developed major problems. The FT290R2 is a great 144MHz rig as an IF for portable microwave work, featuring all-mode, battery or external 12V operation and easily handled output power. 00 Here is a video showing how to flow-solder your LDMOS to the spreader. PA4DAN homebrew. By use of modern semiconductors and refinement concerning cooling and the easy replication of the circuit a further optimisation of the Transverter had been possible. FABRICANTS ET DISTRIBUTEURS. The fold-over design has a hinge that rotates 360 degrees inside of the socket, so it can fold in any direction when needed. So the multiplication scheme I chose is: 92x3=276MHz 276x3=828MHz 828x3=2484MHz 2484x4=9936MHz. The transverter was fired up with FM selected on the driver transceiver with a 50 ohm dummy load on the through-output of the coupler, and the meter went over-scale Even with full series potentiometer resistance in circuit, the meter was still being supplied with too high an input. La premire tape consiste dfinir le microstrip. For material, I usually use 1⁄8 inch alumi-num welding rod. 8 Sep 2010 - Home-Brew Stroke-P by John Cooke GM8OTI Main Menu. After gaining some experience on 13 cm, he figured it was time to get on some other bands; so he started working on 1296. Now I could then hear the GB3MLE beacon over 80km away at S7 all the time, wnith the old homebrew atenna it is only about S1. For this band I use a transverter from 28 MHz. Splitter / diplexer for Transceiver - SDR-receiver: I'm using this to simultaneously connect my Transceiver and SDR (Funcube Dongle Pro+) receiver to any SHF transverters, enabling receive and safe transmit. The right hand module is the LO board. Please refer to the 23cm ( 1296MHz ) Transverter Webpage and 23cm Block Diagram which will explain in more detail what is required to construct a complete Transverter. 29dB - Feed. On OZ4MM side is. It also makes a very good IF rig for a microwave transverter. EW and Radar Systems Engineering. 14 October 2010. Today, the “home-brew” flavor of these early Amateur Radio satellites lives on, as most of the hardware and software now flying on even the most advanced AMSAT satellites is still largely the product of volunteer effort and donated resources. 3 GHz to 144 MHz Transverter - OE9PMJ · 2. Homebrew RF Circuit Design Ideas "If you want to go fast, go alone. Data modes, ‘JT’ and other weak signal modes. A discone antenna is omnidirectional, vertically polarized and has a rather narrow radiation pattern in the horizontal plane. This is the manuals page for Ssb Electronic. A useful circuit for microwave operators. 13 CM MODULES ATV 13 ET 23 CM. For 222 MHz I use a modified Radio Shack 10M transceiver as an intermediate frequency (IF) for transverters. The Yaesu FTV-901R is a three band, VHF/UHF transverter. Here is my 472kHz 630m transverter. First went 2m mobile with a Pye Cambridge and a Halo, then the Sommerkamp TS-280FM - a great crystal controlled rig with 50w o/p into a 5/8 whip. Our new transverter's design (v 2. 3GHz - with 432MHz IF) This is a more complicated project so sections will be added as they are completed. , Live Oak, FL 32060 USA Monday-Thursday 10am-6pm Eastern. One is my microwave band IF rig. QRP projects. 2 GHz transverter kits out there for less than $150 and if you pair that with with a small homebrew or kit amplifier, you might be able to get on 23cm cheaply. This post will be part of a group explaining the basics about microwave transverters, what they are used for and the details of putting a 23cm transverter system together. Band Frequency Callsign Locator Points 6 m (50 MHz) ZL1BQ RF64sg 3470 ZL1AA RF73ir 1896 ZL2QS RE89je 1247 ZL2AS RF80iu 547 ZL4DK RE54fe 522 ZL1AOX RF72mv 85 2 m (144 MHz) ZL1BQ RF64sg 2464 ZL2AS RF80iu 823 ZL4DK RE54fe 713 ZL1AA RF73ir 712 ZL2QS RE89je 470 ZL3TY RE57om 435 ZL3TJ RE78iq 372 ZL1AOX RF72mv 261 ZL2MA RF70ke 161 70 cm. We were able to tune these very quickly and easily using the new Chinese KC901H network analyser (more about that in another post). If you need more details, like a board layout, or any questions please ask. I use transverters on 4m, 23cm and 3cm. Transverter Bild 4 Bild 1 Bild 3 Bild 6: 24 GHz Transverter mit 146 MHz ZF Bild 2 Bild 5: Zdenek, OK2DFC am 50 GHz Spektrumanalyzer Die Veranstaltung findet in der Schule für Elektronik statt (Bild 1) und be-herbergt auch die lokale Clubstation OK2KDJ. The package includes a 2el HB9VC PCB yagi which has turned out to be a great addition for portable work, particularly from a hilltop with a good uninterrupted view of the horizon. This one was built from stock brass by Hans Lohmann Rasmussen OZ9CR. EW and Radar Systems Engineering. Due to unwanted feedback the ERA-2's bias resistor had to be increased until the self oscillation was tamed (a bit dodgy solution but it worked…). These are connected to the dish via [1] a short run of miniature. At that time I wrote that I have no experiences with such a high band so I wrote a brief facts about 23cm only. These are the re-designed and optimized 23CM35 Yagis for 1269 and 1296 MHz operations. This might be a good oscillator for transverters all the way up to the 23cm band with a 2GHz transistor. Generally I have boards and parts available at a modest cost. When the 70 MHz band was introduced in Denmark during 2003 we all started up using whatever equipment available: 4 meter PMR radios, Yaesu FT-847, ready made transverters brought in from the UK. 23 cm ntms. Double Quad Antenna for 1296 MHz This antenna is a medium gain directional antenna for mobile (portable) and base station use. It would work the whole 70 cm band at 432 to 437 MHz if your base radio has the 28 to 33 MHz band. Homebrew RF Circuit Design Ideas "If you want to go fast, go alone. 9 dB Antenne 90 cm Dish. Besides buying a transceiver for that band, another option is a transverter. In many areas, the 33 centimeter band also has a very low noise floor as compared to bands lower in frequency [citation needed]. So the multiplication scheme I chose is: 92x3=276MHz 276x3=828MHz 828x3=2484MHz 2484x4=9936MHz. Satellite & EME. Works great with the TS-770 on SSB. The Intel 4004 is a 4-bit central processing unit (CPU) released by Intel Corporation in 1971. There have been some new calls on 23 cm but none on 13 cm, as I had expected. I added TX/RX switching, a switchable 12dB attenuator for 0. This is a good sign as our IC-9100 has only 10W out on 23 cm and we are using almost 100 ft of LMR-400uF coax to feed our 23 cm antenna. On transmit the output of the 2m radio in is passed through an attenuator to limit the signal low enough to be mixed with the LO of the transverter (144Mhz + 1152Mhz = 1296Mhz FIG 1. KH6HME beacon frequencies: 50. My aerial for the band has to share its location with aerials for 10m, 23cm and above. On Saturday Riviera Amateur Radio Club is having a club night. This is another offset dish that I'm currently using for my DB6NT 10GHz transverter. 70 MHz Elecraft K3 to a D4DDK Anglian transverter and a homebrew 100 Watt LDMOS PA. 3GHz - with 432MHz IF) This is a more complicated project so sections will be added as they are completed. This forum message list include all message for that is related to TS-2000, this include message that also is related to articles. This is based on the changes published by W6PQL on his 144MHz SSPA Page which gives more control of the idle current, ultimately meaning you can reduce the current when in key down, therefore less heat is produced, remember the cooler you can make the amp run, the longer the Mean Time To Failure (MTTF) becomes so this is worth doing, see the 'BIAS. http://www. 5 watt 23 cm 1296 MHz transverter from SG-Lab in Sofia Bulgaria. It feeds the top right module, a RX amp with LO injection for a 2m (144MHz) output. the ceramic trimmer used in the 23cm filter (from a 70cm radio). THE AMERICAN RADIO. Ich denke, wir werden in nächster Zeit noch vielen interessante Schaltungen mit dem neuen Bauteil begegnen. The SG-Lab 23cm Transverter. How do you get on 23 cm 1296. This is my current station setup. Many links of all kinds. His 23 cm antenna feedline losses are negligible. As you can see, this one has the feed arm at the top which makes it a lot easier to mount to the mast. EME Ham Gallery - 432 MHz. Is anyone in the process of, or has gone through the process of, assembling a VK3XDK 10GHz transverter system? Are there any issues with them? (I heard that the first batch of XDK 5. We also have a band at 2400-2450 MHz. The short loop at top left is the 752. 23CM Transverter. When the 70 MHz band was introduced in Denmark during 2003 we all started up using whatever equipment available: 4 meter PMR radios, Yaesu FT-847, ready made transverters brought in from the UK. With 2W input the amp gives 40W output, with a 6dB pad on the transverter output the 28V amplifier gives 10W output for 500mW in. This coming weekend I'm operating portable from DM13 with a DB6NT transverter, they're very good. However, it does benefit from more output power with an external PA. FT-817 is powered by a 12 volt 3S 2. The agreed segment for EME is 2301. Λινκ Για Σχεδια Radio Amateur - Free download as PDF File (. DX Engineering offers a complete selection of ham radio base transceivers from Yaesu, Icom, Kenwood and Alinco. In 23cm folosesc un transverter construit pe baza celui de la Kuhne, avand o putere de maxim 10W cu care atac un final cu LDMOS MRF13750 (kit de la W6PQL) capabil sa debiteze minim 600W, antena DL6WU 70 el (26 lambda). com/ 409 SHOP. The transverter draws 80 mA on receive and 800 mA (0. The schematic I built is here. 432/28 MHZ TRANSVERTER BOARD *** TO BUY WITH CONFIDENCE, YOU ARE GETTING PAYPAL PROTECTION ! *** With this transverter board you can operate on the 70 cm band using any type of the HF radio that has the 10 meter band. Personalmente preferisco la versione in kit perchè, oltre alla differenza di costo, c'è la soddisfazione di averlo assemblato con le proprie mani. On transmit the output of the 2m radio in is passed through an attenuator to limit the signal low enough to be mixed with the LO of the transverter (144Mhz + 1152Mhz = 1296Mhz FIG 1. Yaesu FT-817 Transverter/PA Sequencer David Smith – VK3HZ Introduction The FT-817 is a very versatile rig. I also built a 70 MHz CW/SSB transceiver, which works well, but does not have the facilities of my HF transceiver. , Live Oak, FL 32060 USA Monday-Thursday 10am-6pm Eastern. Over the summer, if you can call it that, I built a 13cm transverter for Alan, GM0USI. 3GHz) transverter with 432MHz IF I decided to try to move up the microwave bands one by one - so 13cm comes after 23cm. 70 MHz all mode trx Since a couple of years the 70MHz band is available for amateur usage in PA, I decided to build an all-mode (FM, USB, LSB and CW) transceiver for this band. Notable "got aways" were PA3DZL, DL1YMK, DJ8FR, and DL6SH Jac was quite weak, but the latter 3 of that list were stronger than many I worked but just didn't hear me, despite endless calling. There has been loads of preparation going on for the VHF NFD station by many Camb-Hams, something which the group should be very proud of. On OZ4MM side is. Related links. In the near future I'll be posting on Arduino + ADF4351, RaspberryPi ham projects, HackRF, Airspy, RTLSDR, uW transverters, beacons and more. The author who works successfully via EME on this band wants to describe his own yagi design and give some of hints for the construction. I managed to find the original 10GHz transverter paperwork ( written exactly 11 years ago today!) and I think that I can work from that to get. It was first modified by hams for the 23-cm band in the early 1970's. 6m Projects - Transceivers "Magic 50" Just Another 50 MHz Transverter durch DF9CY With April, 1st 1990 German Amateurs were able to receive a special permission for operation in the 50. Modifying the FT290 R2 to emulate the Mk1 transmit/receive facility for transverter switching. This is my first post here. The 70cm transverter is a proprietary bought in unit giving about 10W O/P, whereas all the others are ‘home-brew’. Repeater offset is provided for 6 and 2 meters, and full duplex operation on OSCAR modes A/B/J is possible with an external receiver. Without a very good lab full of equipment I wouldn't homebrew a 23cm transverter. John's homebrew pages Transverter for 23cm (1. The Ten-Tec 6 Meter Transverter on 12 or 17 Meters. The package includes a 2el HB9VC PCB yagi which has turned out to be a great addition for portable work, particularly from a hilltop with a good uninterrupted view of the horizon. a 23cm transverter taking shpae in the workshop; swept oscillators using YIGs; a crytal testing fixture for the PC so I can match crystals to make more ladder filters; AD8307 return loss bridges; a 1296MHz WSPR beacon; I hope that you find inspiration in these projects as I discuss them. The short loop at top left is the 752. Related links. This year, the annual Telford Rally had a definite microwave" flavour"! The organisers and club officials at the Telford club include well-known microwave operators Martyn, G3UKV and David, M0VZT. For many they are a fantastic experience to allow those participating the opportunity to test their operating skills, equipment reliability and their ability to establish a fully operational station in some remote…. , Live Oak, FL 32060 USA Monday-Thursday 10am-6pm Eastern. A local oscillator (LO) feeds a power splitter that drives a pair of mixers. UHF Station. 5 to 5 watts all mode. Eimac power tubes. With the recent launch of the iPhone 5S with its 64 bit A7 processor it is good to remember that the chip race all started with the 4 bits 4004 in 1971. I had a homebrew 4 element quad and a single 4-400 homebrew amp. Double Quad Antenna for 1296 MHz This antenna is a medium gain directional antenna for mobile (portable) and base station use. The latest Tweets from George M1GEO (@m1geo). 150 MHz SSB mode feeding a SG-Lab 23cm transverter for output on 1296. tbodo uses ic-706, hb transverter with 100 w and a 59 el yagi (5 m long & 18. Sunday 18 June 2017. 50MHz Elecraft K3 100 Watts to a 5+5 element YU7EF dualband Yagi. Basic Kits Do Not include connectors, miscellaneous hardware, enclosure, and require other Kit products etc. My transmitter output was only 8 watts, to a 2. I used an ICOM 970A as the 430 MHz IF, to a homebrew transverter. A useful circuit for microwave operators. simple "home brew" radio equipment, and portable operation.