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The web page provides detailed information on a portable 10/20/40 meter vertical antenna designed for mobile operations, including modifications for 20 and 40 meters. It includes images and descriptions of the antenna setup in a car. The content is useful for amateur radio operators looking to enhance their mobile communication capabilities.

Galaxy web site updates and additions with modifications, diagrams, and schematics for galaxy radios

Website dedicated to Yaesu VX-7R modifications and informations, includes links to software for VX7R, tips and tricks

Repair and modifications

Scanner and radio mods taken from qrz ham radio cd rom

Service information, modifications, diagrams, manuals and schematics, and technical files on Galaxy DX Radios.

"CB books, plans, and kits. Repairs, modifications, 10-Meter conversions, amplifiers, FM, unique high-performance accessories. Publishers of the classic ""Screwdriver Expert's"" Guide book."

Modifications for Icom IC-2100H by mods.dk

The Heathkit SB-220, two 3-500Z, amplifier made a notable impact in the world of amateur radio when it debuted in 1975. Resources and modifications

Conversion notes and amateur radio firmware especially for Finnish PMR radios and cellular phones like Nokia, Mobira and Benefon. Also some information for other European brands (Ericsson, Key Radio/Kyodo, Philips) and an extensive link collection.

VX-5R Loose antenna cure, Vx-5r Free Band, VX 5 R modification for German, VX-5R expanded frequency mod, VX-5R MARS/CAP & freeband mod

Some interesting mods for the 847

Mods for ICOM IC-706

Modifications collected by mods.dk

Radiomods.nz modifications page

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.

This page describes two modifications W8WWV made to his AL-1200 amplifier. The mods were obtained from Ameritron, so they are official.

mods for the Yaesu FT-100 by radiomods.co.nz

Another good collection of TS-850 modifications

Collection of modifications notes for the Kenwood TS850

Collection of TS-50 mods, LCD display dark, TS50<-->AT50 communication, TS-50 Power Mod for QRP, TX Coverage mod TS-50, CAT control for TS-50S

All about the JRC NRD-525 receiver. Modifications, review, manuals, tipd and tricks

Modifications for the Yaesu FT-920

Modifications and messages about the Yaesu FT-450

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

VK2KFJ amatuer radio information pages, including packet radio, six metres, radio modifications, local repeater lists.

Modifications for motorola and ericsson radio repeater

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

Collection of radio mods for Kenwood TS-870

FT-817 Radio Modifications, Improving the FT-817 Noise Blanker, increasing output power, using rechargeable cells, epanding frequency range

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

Kenwood TH-D7a TX band modification

Modifications for the Kenwood TS-870S

Throughput improvement for the FT726R - Tapr PSK modem

A collection of modifications and improvements to the Ameritron ALS-600 ham radio RF power amplifier

North West CB Radio is a page with radio modifications’s, Local Portland’s Traffic info, Trucker things like CB slang, DX info and a forum. Also we host The Saturday Night Stomp Fest in the Portland area. Results are posted weekly.

Some modifications for the Tigertronics Signalink USB sound card radio interface

Filtering, modifications and improvements of the Yaesu FT-1000D

Softrock Version 6.1 Software Defined Radio experience and modifications by DF9CY

Mods.dk modifications for the Kenwood TS-690

Articles about TM-D710 radio modifications at Mods.dk

Can Home Solar Power and Ham Radio Coexist? It is possible, with minimal interference from the solar power system, provided you make some modifications.

Icom IC 7300 noisy Fan replacements with a whisper quiet Noctua NF-A8 / PWM and installing and configuring WSJT-X with IC 7300 correctly

This article documents the author's latest go-box build for outdoor ham radio operations using a Yaesu FT-891 transceiver. The go-box is constructed from a plastic "50-cal ammo case" and contains various components, including the transceiver, LDG Z11 Pro autotuner, DIY Yaesu FH-2 remote control keypad, and an external battery. The author details the design considerations, the mounting of components inside the box, and addresses issues related to ventilation and cable management. The go-box is geared for CW operations and POTA activations, with further modifications planned for a microphone and DATA jack. This project allows for rugged, environmentally protected outdoor radio operations while maintaining portability.

The mini Radio Solutions miniVNA PRO is the only affordable vector network analyser (VNA) I know of that offers remote wireless operation. This is very interesting because it allows to measure the input impedance of HF antennas installed at height without having to deal with coax cable lengths, baluns nor common mode suppression chokes. However, to render the miniVNA PRO truly field proof, it requires a number of significant modifications.

ICOM IC756 PRO II III, PS125 Fan Modifications, install an external cooling fan on the ICOM IC756 PROIII to minimize the heat on the chassis, then will perform a fan modification on the ICOM PS125 power supply to minimize the fan noise.

Initially planned as an article on the R-407 station mast, this project evolved into creating a custom mast kit. Utilizing original materials, the design was modified for cost-effectiveness and practicality in home assembly. The new mast extends to 10 meters, featuring secure connections, a leather-lined base to prevent metal-on-metal friction, and sturdy military-grade anchors. Modifications include lengthened connecting tubes, improved anti-rotation features, and a convenient base design for solo assembly. Ideal for amateur radio operators, this mast provides stability, ease of construction, and versatility, proving more economical than professional products without compromising on performance or reliability. Article in Czeck.

Learn how to build a QRP digital transceiver with Arduino, based on a project by Burkhard Kainka. This article covers the development process, including the source code, modifications made, and the addition of an OLED display for a more professional look. Discover the inner workings of the transceiver, from the receiver to the oscillator, and how components like the CD2003 are utilized. Explore the schematic design, the use of a PLL module Si5351A controlled by Arduino nano, and more. Ideal for hams looking to create their own digital transceiver for amateur radio operations.

This page by Lajos Hoss, HA8HL, provides a detailed guide on how to build a simple direct receiver using FT8QRP CAT control support. The author shares his experience in making QSOs with FT8, WSPR, and JT65 modes during the Covid-19 lockdown. Modifications to the VFO, transmitter design using BD329 transistor Class A amplifier, and the challenges faced in achieving clean output signals within legal limits. This project is interesting for those hams that are interested in experimenting with DIY transmitter projects and understanding CAT control support for various amateur radio modes.

The Dipole Bazooka Antenna for 40 meters is a popular choice among amateur radio operators. Its design allows for easy construction using materials like RG58 coaxial cable and PVC. Measurements are calculated using specific formulas; for instance, at a frequency of 7,100 MHz, the total length is approximately 19.74 meters. This antenna offers a performance range of 97% to 99%, with an impedance of 49 to 52 ohms. Additionally, it can handle up to 1 kW of power and requires no modifications for connection.