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Radio mods for GE Phoenix radios to use in APRS applications

CB Radio and 10 meter Radio reviews & mods blog. Most articles are in Japanese

Modifications for the Kenwood TS-940, TS-940S LCD Clock Display Erratic Operation, Talk Power Improvement, erratic display, ALC mod

Drake unofficial, mods, tach support, classifieds, auctions

Mods.dk - modification for IC 2720H

How to identify correct version of your TS-570

Battery problem with TS-570

cqham.ru russian only modification page

by Steve Hicks N5AC and Jim Boehner N2ZZ

This article explores the claim an amplifier might arc from a parasitic oscillation, damaging capacitors, bandswitches, or other components.

Pictures of IC-7000 and related accessories

my mods.dk

Packet with Linux, homebrew, Talco mods. in French

This modification will allow the use of separate receive and transmit antennas on the Kenwood TS-850S/AT.

Mods collection for the Icom IC-7000 at mods.dk

A video demonstrating SMD board inside FT-897D to makes the two fans run only when temperature threshold is reached

Yaesu MH-31 Electret Condenser Mic Modification

HAM-IV antenna rotor repari and restore

Problem width the memories, TS-570 Batteries, MARS/CAP Modification

Mods.dk pictures of the Yaesu VX-8R

TM-241A RX/TX mods The TM-421 a is capable of transmitting from 136 to 174 MHz when the following modification is performed

Kenwood TS-570 mods at mods.dk

1500 watts PEP output from a Kenwood TL-922 amplifier requires careful attention to parasitic suppression and component selection to ensure stability and longevity. This resource critically examines common modifications, often based on anecdotal evidence rather than sound engineering principles, that can degrade performance or introduce new issues. It highlights how replacing aged components often gets misattributed to the efficacy of unnecessary modifications, leading to widespread misinformation within the amateur radio community regarding amplifier stability. The article details specific, effective modifications for the TL-922, such as shortening anode-to-chassis and anode-to-grid paths to improve VHF stability and efficiency. It addresses issues like incorrect capacitor types in the tank circuit, inadequate grid grounding, and poor RF sheet metal design, providing practical solutions like adding direct ground connections for the plate tune variable capacitor. The author also discusses proper parasitic suppressor design, emphasizing the importance of lead length and component selection for optimal performance and harmonic suppression, contrasting these with less effective or detrimental 'magical suppression kits'.

Pictures of Yaesu ft-9000 at mods.dk

Collection of radio mods for Kenwood TS-870

Heathkit SB-220 Amplifier modification by KE5YA

Article on the Dentron MT-3000A antenna tuner and some good modifications by W1AN

IC8POF's How To index, Hamradio mods, Crazy PA Tuner project (transform any manual amplifier in an automatic one).

radiomods.co.nz modifications for the Kenwood TS-450

Mods for Icom 756 Series including eSSB Mid-Fi Mods for Receiver and Transmitter

Pictures of the Yaesu FT-450 at mods.dk

Heathkit SB 220 mods, replacing the Zener ZD1, replacing the plate-voltage voltage divider, adding a keying circuit for solid state transceivers

Kenwood TH-D7a TX band modification

Modifications for the Kenwood TS-870S

Extending frequency to FT-290R for transverter use

Throughput improvement for the FT726R - Tapr PSK modem

YAESU FT-1000MP Mark V ESSB Modifications pdf file

This mod flattens out the ACC2 audio input low frequency response

A view on TS570 sensitivity, a plot from 1.8 MHz to 60 MHz

WR1B review of the Kenwood TS-570D on QST Jan 1997

Modifications to the Tigertronics Signalink USB sound card

This is a group for CBers, Sidebanders, Amateurs and Freebanders. Items to be discussed are CB, Skip, Skeds, DX communications, SSB, export radios, Radio equipment, mods, ham radio, repairs, electronics, CW, PSK31, RTTY, digital, and different radio shops.

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.

Ham radio Blog, focusing on homebrewing and testing antennas, rig mods and contesting.

Kenwood TS 990S, Military Auxiliary Radio System modification

Kenwood TS-2000 Transmit / Receiver eSSB Modifications by N3GX

Unfilter LF output from the TH215/415 kenwood portable radio

Mods.dk collection of Ameritron ALS-600 power amplifier

Keyclicks and NB modifications for the Yaesu FT-1000MP Mark-V HF transceiver

Fixing notice subtle distortion on SSB receive audio on the Yaesu FT-1000D