- K1TTT Technical Reference
- Technical reference about Accessories, Amplifiers, Antennas, Cable and Connectors, Filters, Geography, Grounding, Gunk, Matching Networks, Projects, Propagation Info Radios, RFI/EMI, Rotors, Station Setup, Towers.
[ Hits: 5143 | Votes: 6 | Rating: 6.33 ]
- SQ2OMC HF Transceiver
- Description of the homebrew shortwave multiband SSB transceiver, that covers 0.1 - 30MHz. made by SQ2OMC
[ Hits: 559 | Votes: 3 | Rating: 4.67 ]
- 160m 20w AM transmitter
- Born as a companion transmitter for the Yaesu FRG-7 receiver has become a stand alone tramsmitter for 160 meters band
[ Hits: 766 | Votes: 3 | Rating: 10 ]
- 40 meter 100 watt Transmitter
- 40 meter transmitter by K9GDT
[ Hits: 4147 | Votes: 7 | Rating: 7.28 ]
- 40 meter QRP Transceiver
- This semi-homebrew QRP (low power) CW transceiver is based on the ARK-40 transceiver kit, by S&S Engineering.
With its built-in CW keyer and 5 watts of power, the basic ARK-40 transceiver is an outstanding 40 meter CW performer
[ Hits: 9447 | Votes: 7 | Rating: 6.85 ]
- 5 Watt 40 Meters transmitter
- This circuit is unique in that it uses a power mosfet as a final rather than a conventional bipolar transistor.
[ Hits: 8423 | Votes: 7 | Rating: 5.29 ]
- 6L6 Transmitter
- 40 meters band 5 watts transmitter, uses a 6L6 with a 6X5 rectifier and a 0D3 voltage regulator tube on the screen.
[ Hits: 1296 | Votes: 1 | Rating: 10 ]
- 80 meters cw transceiver
- The home made transceiver covers 3.5 to 3.6 MHz and is CW only by GW4ALG
[ Hits: 4448 | Votes: 4 | Rating: 7 ]
- 80m CW QRP transmitter
- 80 metre ceramic resonator VXO CW Transmitter by VK1PK
[ Hits: 2315 | Votes: 1 | Rating: 10 ]
- 80m SSB & CW transceiver
- The 80m SSB & CW transceiver design is based on an already proven concept used in ATLAS amateur transistorised transceivers from 70's
[ Hits: 10751 | Votes: 16 | Rating: 5.19 ]
- A low power 3.5MHz ARDF transmitter
- This low power transmitter is developed for ARDF exercising purposes but of course can be used as super QRP transmitter either. With 1 or 2 meter wire as antenna and a ARDF receiver with ferrite-rod antenna the range is about 100m but with better antennas and a 'real' receiver the range is probably much larger.
[ Hits: 2036 | Votes: 4 | Rating: 6.5 ]
- A Simple Dual-band Transceiver
- This a well performing, simple two band transceiver. The transceiver design is inspired by the S7C superhet. A dual-band transceiver with a crisp receiver and a clean SSB signal
[ Hits: 94 | Votes: 1 | Rating: 6 ]
- An 80 m SSB Transceiver
- A project for 80M SSB rig including a DSB/SSB exciters, RX, TX and a 30 Watt PA
[ Hits: 1637 | Votes: 5 | Rating: 3.8 ]
- BITX QRP RTX
- An easy to build 6 watts SSB transceiver for 14MHz. BITX is an easily assembled transceiver for the beginner with very clean performance. Using ordinary electronic components and improvising where specific components like toroids are not available, It has a minimum number of coils to be wound.
[ Hits: 97 | Votes: 0 | Rating: 0 ]
- Build A Single-Sideband Transceiver From Scratch
- How to build a complete Single-Sideband amateur radio transceiver from scratch. Article published on hackaday dot com includes an introduction to radio architectures, ssb receivers and tramsitter
[ Hits: 294 | Votes: 1 | Rating: 10 ]
- CDG2000 by OZ9FW
- OZ9FW CDG2000 High-end transceiver homebrew project
[ Hits: 563 | Votes: 0 | Rating: 0 ]
- Chatterbox Transmitter and Receiver
- 160 meters transmitter and receiver by G3NGD
[ Hits: 742 | Votes: 0 | Rating: 0 ]
- Circuit Improvements for the TS-430S
- by Richard L. Measures, AG6K
[ Hits: 923 | Votes: 2 | Rating: 6 ]
- DRAKE TR7 Downloads
- Circuit diagrams drake tr7, Schaltbilder Drake Tr7, antenna tuners, baluns, and home brew power supplies, dual tone ssb test generator, zweiton ssb test generator, zweiton testgenerator, dual tone test generator by DK4DDS
[ Hits: 1751 | Votes: 4 | Rating: 7.25 ]
- Fix FT-757GXII blank display
- A quick fix for a Yaesu FT-757GXII blank display
[ Hits: 38 | Votes: 0 | Rating: 0 ]
- Fox Tango International
- Yaesu FT-101 Users Group purpose and scope is to serve as a sort of benevolent, protective, mutual aid and social club, essentially for the purpose of interchanging information, ideas, experiences and problems. By and for owners of Yaesu amateur radio equipment. Founded in 1972 by Amateur Radio operator Milton Lowens N4ML
[ Hits: 1977 | Votes: 265 | Rating: 8.84 ]
- Frequency and VFO
- How to keep from being out of band
[ Hits: 3166 | Votes: 10 | Rating: 3.3 ]
- FT-847 Knowledgebase (FAQ)
- Visit the legendary FT-847 FAQ pages ! You'll find a huge knowledgebase especially for the Yaesu FT-847 Transceiver.
[ Hits: 9238 | Votes: 281 | Rating: 8.93 ]
- HamPedia
- Programming software, diagrams, radio mods, secrets, service manuals for Motorola, Yaesu, Kenwood, Icom, Alinco. A large collection of ham radio equipment data also known as Ham.dmz.ro
[ Hits: 23103 | Votes: 79 | Rating: 7.63 ]
- HF Rigs db comparison
- XLS file with technical specifications about ham radio transceivers
[ Hits: 1140 | Votes: 1 | Rating: 2 ]
- HF transceiver
- Continuos coverage HF Transceiver by I6WJB & I6YPK
[ Hits: 8805 | Votes: 3 | Rating: 6 ]
- Hombrewing an HF Transceiver
- This page will describe the construction of a multi band SSB transceiver with all its components Band Pass Filter, Oscillator/Modulator unit, RX/TX Mixer TX Amp I.F. Amplifier AGC VFO Driver amplifier Receive audio amplifier Final amplifier Low pass filter Digital display and VFO stabiliser
[ Hits: 4365 | Votes: 6 | Rating: 8.33 ]
- Homebrew a High Performance SSB RTX for 14 MHz
- This article describes the construction of a high performance transmitter and receiver for SSB (voice) communication covering the 14MHz (20 meters) high frequency amateur radio band with output range 15 to 20 watts and a top audio sound quality both on transmit and receive.
[ Hits: 335 | Votes: 5 | Rating: 7.8 ]
- Homebrew QRP SSB Transceiver
- This page describes a homebrew QRP SSB transceiver built by WB9IPA.
[ Hits: 19725 | Votes: 16 | Rating: 7.94 ]
- IC-706 Amp T/R Interface, K6XX
- External Amplifier Keying from the IC-706
by Bob Wolbert, K6XX
[ Hits: 1862 | Votes: 7 | Rating: 7.71 ]
- IC-751 transceiver RAM battery replacement
- How to replace the lithium battery in this ICOM radio
[ Hits: 1075 | Votes: 4 | Rating: 8 ]
- Icom 706MKIIG fan mod
- Modification of internal fan on receive
[ Hits: 2208 | Votes: 98 | Rating: 9.64 ]
- ICOM 746 Temperature Measurements
- The ICOM 746-Pro has acquired a history of NEC 1678G (IC-151) MMIC and driver transistor 2SK2975 failures. The failure of IC-151 appears to be a combination of ESD damage from electrostatic charge on the antenna entering IC-151, and perhaps thermal heat.
[ Hits: 2254 | Votes: 0 | Rating: 0 ]
- ICOM IC-706MKII Modification
- ICOM IC-706MKII out of band Xmit Modification
[ Hits: 3416 | Votes: 16 | Rating: 5.13 ]
- ICOM IC-746PRO Dead TX
- The purpose of this web page is to try to investigate the ICOM IC-746PRO Dead TX problem reported by many radio amateurs through out the world; and unfortunately not properly taken care of by ICOM. If you are the owner of either the ICOM IC-746PRO or the IC-7400 you may already have experienced the Dead TX Issue. If not you may sooner or later.
[ Hits: 3410 | Votes: 5 | Rating: 9.2 ]
- Icom interface box
- interface box for Icom rigs that includes a band output port and a CI-Vtocomputer serial interface
[ Hits: 1977 | Votes: 2 | Rating: 3.5 ]
- Improvements for TS-830S
- Circuit Improvements and Maintenance Procedures for the TS-830S
[ Hits: 1276 | Votes: 4 | Rating: 8.75 ]
- JRC NRD-525
- All about the JRC NRD-525 receiver. Modifications, review, manuals, tipd and tricks
[ Hits: 2260 | Votes: 42 | Rating: 8.96 ]
- K2 Heat Sink Fan
- Kazmo’s Kustom Kreations a cool accessory - aka Outboard Heat Management Project by w4kaz
[ Hits: 401 | Votes: 0 | Rating: 0 ]
- K6XX Amateur Radio articles
- An assortment of Amateur Radio-related technical articles written for the JUG, the newsletter of the Northern California Contest Club. Topics include unique but simple and useful radio modifications and accessories, and rig reviews.
[ Hits: 3056 | Votes: 6 | Rating: 6.33 ]
- Kenwood Schematics
- Kenwood schematics diagrams in high resolution format, includes Kenwood TS-830S , TS-820S and TS-520S
[ Hits: 623 | Votes: 2 | Rating: 9 ]
- Kenwood TS-440 repair
- This page describes some repair tasks related to the Kenwood TS-440 transceiver.
[ Hits: 515 | Votes: 3 | Rating: 9.67 ]
- Kenwood TS-950 page
- Lot's of info on 950sdx tranceiver by Jeff King ZL4AI/DU7
[ Hits: 3018 | Votes: 12 | Rating: 8.6 ]
- Kenwood TS-950S RF gain mod
- The Kenwood TS-950S and TS-950SD HF transceivers are fine radios. However, many, if not all,
of them were produced with a design flaw which allows the RG GAIN control to cease function in
the presence of a strong signal IF the AGC has been turned OFF
[ Hits: 1760 | Votes: 1 | Rating: 1 ]
- Kenwood TS830S
- Kenwood TS-830 manual, tips and fixes
[ Hits: 5906 | Votes: 28 | Rating: 7.33 ]
- Kenwood TS830S Survival Guide
- Excellent collection of TS 830S documents collected from the web and other sources by DL9AI, PDF File
[ Hits: 4640 | Votes: 11 | Rating: 7.91 ]
- Krasnodar - radio schematics
- Contain schematic diagram of many different radio, and some operations instructions.
[ Hits: 10210 | Votes: 96 | Rating: 5.6 ]
- Mizuho products
- Mizuho Tsushin Co. was a small Japanese manufacturer of QRP radios and kits, shortwave receiver accessories, and AM broadcast band receiver kits and antennas
[ Hits: 3232 | Votes: 1 | Rating: 10 ]
- One Valve CW transmitter
- This transmitter was first constructed in 1987 and provided the author with his first real rig, capable of distances of more than about 100 metres.Use a 6GV8 tube.
[ Hits: 700 | Votes: 0 | Rating: 0 ]
- PT40 7 MHz Transceiver by AA3SJ
- Home made 40 meter transceiver project. The receiver is a Progressive Receiver with a few modifications. The Transmitter is a modified MFJ Cub circuit. Includes schematic and circuit diagrams for Receive Input Filter, 3-Pole 500 Hz Cohn Filter and 7 MHz Double Tuned Bandpass Filter
[ Hits: 160 | Votes: 0 | Rating: 0 ]
- PY2MOK Leo
- Repair services in Brasil, manutencao consertos de equipamentos de Radioamador, Yaesu, Kenwood, Delta, Collins, Drake.
[ Hits: 1201 | Votes: 2 | Rating: 5.5 ]
- QST signalink review - SL-1
- Designed to handle audio signal interfacing as well as transmit/receive switching Reviewed by Steve Ford, WB8IM
[ Hits: 651 | Votes: 0 | Rating: 0 ]
- Receivers sorted by IM3
- Sorted by Intermodulation. Best receiver first.
This is a measure of how badly a close-spaced signal will trash your receiving with spurious signals or splatter sounds,
[ Hits: 687 | Votes: 0 | Rating: 0 ]
- Repairing FT-101
- Repairing the YAESU Transceiver Model FT-101E.
[ Hits: 865 | Votes: 1 | Rating: 10 ]
- RF-overload for Icom IC 746 756 series
- The following transceivers can be susceptible to damage from a strong RF field (or RF-overload) IC-746 IC-746PRO IC-756 IC-756PRO IC-756PROII
IC-756PROIII n1eq explain why
[ Hits: 3665 | Votes: 4 | Rating: 8 ]
- Scanner and tranceiver mods
- Kenwood, Icom, Yaesu, Sony, Uniden Bearcat, Wilson MARK II & IV
[ Hits: 12695 | Votes: 56 | Rating: 6.29 ]
- Sierra mods
- This is a collection of emails collected over time which indicate how to put some mods into your Sierra transceiver. Most of the mods have to do with improving the power output.
[ Hits: 713 | Votes: 1 | Rating: 10 ]
- SSB 75 Meter Transceiver
- QRP transceiver for 75 meters band by WA7JHZ
[ Hits: 1285 | Votes: 3 | Rating: 2.67 ]
- Stingray Marine Transceiver
- Recently, at the Ballarat Hamfest, the author acquired an old Marine transceiver for just $10, charmed by its sturdy construction and waterproofing. Made by Findlay Communications in Sydney, this crystal-controlled transceiver had been dormant but was reinvigorated with minor fixes. A manual was sourced, and further repairs were made, including an ingenious crystal oscillator replacement using an Si5351a controlled by an Arduino. The refurbished radio, complete with a fresh coat of paint and added customizations, is now operational for 160m AM and 30m SSB. A successful and cost-effective restoration.
[ Hits: 23 | Votes: 0 | Rating: 0 ]
- Ten-Tec Orion Review
- Ten-Tec Orion Transceiver - contester's review by Yuri Blanarovich, K3BU, VE3BMV, VE1BY
[ Hits: 2215 | Votes: 2 | Rating: 5.5 ]
- The G4AON SSB Transmitter
- This transmitter covers the 160, 80, 40 and 20 metre bands and provides both SSB and properly generated CW. The CW side of this transmitter is not compromised and produces excellent CW. On SSB the audio has been tailored to provide a rising response to 3 KHz, with a sharp drop above that frequency. There is RF speech clipping to both provide more "punch" and to limit the peak output.
[ Hits: 177 | Votes: 2 | Rating: 9.5 ]
- The manhatten style nb6m 10
- An Homebrew 10 Meter transceiver
[ Hits: 957 | Votes: 1 | Rating: 2 ]
- The Official Class E Transmitter Web Site
- The goal of this site is to present a working, practical tutorial on class E transmitters
[ Hits: 411 | Votes: 0 | Rating: 0 ]
- The Rock-Mite
- A QRP RTX project by IS0VSU Franco in PDF file
[ Hits: 1556 | Votes: 0 | Rating: 0 ]
- The ROSE 80 CW Transceiver
- Build a 5 watt, 80 meter QRP CW Transceiver Designed by N1HFX
[ Hits: 3009 | Votes: 2 | Rating: 5.5 ]
- The Super Sixty transceiver
- The 'Super-Sixty' a 5 MHz 60 meters band transmitter & receive converter
[ Hits: 1309 | Votes: 0 | Rating: 0 ]
- TS480 power level mod
- Increase TS 480 PEP power level
[ Hits: 1793 | Votes: 12 | Rating: 6.58 ]
- Yahoo! Groups : TS-850S
- Welcome to TS-850S HF Transceiver Owners Group.
Group designed to discuss the attributes, usage and technical information sharing,
concerning this Classic Transceiver.
Please feel welcome to add your questions, information and comments. We hope you enjoy the Amateur Operators "Attribute of helping ones fellow operator". Valid AmateurCallsigns only, admitted.
[ Hits: 1178 | Votes: 3 | Rating: 8.67 ]
