HF Radios

HF Radio Modifications - Lots of HF radio mods, including AOR, Kenwood, Yaesu, Icom, Uniden, Alinco, Sony

KB2LJJ Radio Mods Database - The KB2LJJ radio mods database offers approximately 12,000 Radio Mod's, circuits and manuals.

WideBand for Yaesu 817 857 897 - This software will allow you to extended TX for the Yaesu FT 857 FT 817 FT 897 and reset back to standard factory defaults.

Ham.dmz.ro - Programming software, diagrams, radio mods, secrets, service manuals for Motorola, Yaesu, Kenwood, Icom, Alinco.

Homebrew QRP SSB Transceiver - This page describes a homebrew QRP SSB transceiver built by WB9IPA.

Electronic Service Pros - HAM/Broadcast, Modifications & Repair, D-104 mods, TS-830 TS-530 mods

Scanner and tranceiver mods - Kenwood, Icom, Yaesu, Sony, Uniden Bearcat, Wilson MARK II & IV

Krasnodar - radio schematics - Contain schematic diagram of many different radio, and some operations instructions.

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

HF transceiver - Continuos coverage HF Transceiver by I6WJB & I6YPK

FT-847 Knowledgebase (FAQ) - Visit the legendary FT-847 FAQ pages ! You'll find a huge knowledgebase especially for the Yaesu FT-847 Transceiver.

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.

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

Kenwood TS830S - Kenwood TS-830 manual, tips and fixes

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.

FT-897 mods - FC-30 Fan modification, Mars/Cap mod for Yaesu FT-897, DRM modification for Yaesu FT-897, FT-897 mod for SGC-230 DC power

Direct Conversion HF Transceiver with DDS LO - Direct conversion HF radio with DDS frequency synthesizer is very interesting concept. OH7SV and OH2NLT are experimenting with such rig. Full stories will become available when project matures. Here we have some preview pictures and material.

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

Kenwood TS830S - Kenwood TS-830 manual, tips and fixes

Kenwood TS830S Survival Guide - Excellent collection of TS 830S documents collected from the web and other sources by DL9AI, PDF File

Krasnodar - radio schematics - Contain schematic diagram of many different radio, and some operations instructions.

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

NorCal 20 Modifications - by Larry East, W1HUE June 1999

OZ3QY CDG2000 Transceiver - The CDG2000 is a high performance HF transceiver developed by G3KBB, G3OCQ and G3SBI. They have managed to design a high end transceiver that can compete with the most expensive ones on the market

PY2MOK Leo - Repair services in Brasil, manutencao consertos de equipamentos de Radioamador, Yaesu, Kenwood, Delta, Collins, Drake.

QST signalink review - SL-1 - Designed to handle audio signal interfacing as well as transmit/receive switching Reviewed by Steve Ford, WB8IM

Radio QRP - The Art of Low Power - QRP is The Art of Low Power Radio where the challenge is to operate and/or build AM radio transmitters usinga bare minimum of components, money and construction skill.

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,

Repairing FT-101 - Repairing the YAESU Transceiver Model FT-101E.

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

Scanner and tranceiver mods - Kenwood, Icom, Yaesu, Sony, Uniden Bearcat, Wilson MARK II & IV

Shortwave Converter - This is a simple circuit that when placed near an ordinary AM broadcast radio will allow you to receive international shortwave broadcasts in the 5-6 MHz band

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.

Sommerkamp FTDX500 Restoration - Sommerkamp FTDX500 - Yaesu FTDX400 restoration by M0DGQ

SQ2OMC HF Transceiver Priority listing - Description of the homebrew shortwave multiband SSB transceiver, that covers 0.1 - 30MHz. made by SQ2OMC

SSB 75 Meter Transceiver - QRP transceiver for 75 meters band by WA7JHZ

SV8CS Remote shack system - Remote controlled station from Zante greece

Ten-Tec Orion Review - Ten-Tec Orion Transceiver - contester’s review by Yuri Blanarovich, K3BU, VE3BMV, VE1BY

The Islander HF RTX - A practical solution by Cuban radio amateurs, hybrid circuit with mostly defunct TV set parts.

The Kenwood TS-830 Survival Guide - A downloadable manual-like guide containing a lot of technical information about the Trio/Kenwood HF transceiver TS-830.

The manhatten style nb6m 10 - An Homebrew 10 Meter transceiver

The Official Class E Transmitter Web Site - The goal of this site is to present a working, practical tutorial on class E transmitters

The Rock-Mite - A QRP RTX project by IS0VSU Franco in PDF file

The ROSE 80 CW Transceiver - Build a 5 watt, 80 meter QRP CW Transceiver Designed by N1HFX

The Super Sixty transceiver - The 'Super-Sixty' a 5 MHz 60 meters band transmitter & receive converter

TL-922 Improvements - Circuit improvements for the TL-922 by Richard L. Measures, AG6K

TS-430S Improvements - Circuit improvements for the TS-430S by Richard L. Measures, AG6K

TS-440S Improvements - Various circuit improvements for the TS-440S by Richard L. Measures, AG6K

TS-830S Manteinance procedures - Improvements and maintenance procedures for the TS-830S

TS480 power level mod - Increase TS 480 PEP power level

Universal QRP Transmitter - Here's the homebrew Universal QRP transmitter adapted from work by Wes Hayward - W7ZOI. The circuit originally appeared in QRP Classics published in 1980 by the ARRL

Yaesu FT-101 pics - Images of Yaesu FT 101

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.