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This project is an APRS iGate for digipeater aboard the ISS. As the ISS pass over the iGate location, the TNC decoded the audio tones and creates data packets the Raspberry Pi can receive.

Chinese manufacturer of two way radio transceivers

Vintage Tube Radio's from Germany for sale. High class restorations for all valve radios offered. Radio Brands like Saba, NordMende, Majestic, Grundig, Zenith, Philco and more. TubeRadioDoc Vintage Audio Store

Ham radio club deeply involved in many aspects of amateur radio

DataSheet4U is a free electronic engineering tool that enables you to locate product datasheets from hundreds of electronic component manufacturers worldwide.

The Medina County Amateur Radio Corporation (MCARC) is an amateur radio club based in Medina County, Texas, dedicated to promoting the hobby and providing community support. The organization actively participates in events such as **Winter Field Day 2024**, demonstrating operational readiness and emergency communications capabilities. MCARC focuses on fostering camaraderie among local hams and engaging in various on-air activities, contributing to the overall health of the amateur radio community in its region. The club's activities include regular meetings and participation in significant operating events, which serve to enhance members' technical skills and operational proficiency. By organizing and engaging in events like Field Day, MCARC members gain practical experience in setting up and operating portable stations, often under challenging conditions. This hands-on experience is crucial for developing robust **emergency communications** skills, which are vital for supporting local communities during times of need.

Matrix of several popular amplifiers currently on the market

Projects in ham radio, programming, and robotics. Specializing in amateur satellite operations.

Based in Huntsville AL

This application allows two Winkeyers to be linked over the Internet for Morse code exchanges or for remote keying of a station.

A 600 volts power supply for QRO

A J-pole antenna plan for 50 MHz based on the DK7ZB design

This free amateur radio world map is a scalable vector graphics drawing. Two formats are available a SVG vector graphics and a high resolution PNG bitmap format in 600 DPI resolution. Current map picture has been updated on 2023.

Which is better a 20m antenna for an island DXpedition: Yagi at 25', or a vertical or two on the beach?

High quality ham radio t-shirts. Made by Hams for Hams. Made in the USA.

TA2MOG (HB9TOW) website. Ham and CB radio pages in Turkish, forum, with a summary English section. Info in visiting Turkey.

SWR and Transmitters Friends or Foes!, making sense of it!

Free programming software for the Yaesu VX-2 and VX-2R

About experiments and measurements on loading coils using net standing wave current

Freeware windows program that allow you to read, search and archive dx news bullettins by Alex, VE3NEA

How to build and connect the M710 Remote Cable

Icom PW1 Linear Amplifier, setup and configuration PDF file

Diary of a small contest group

Naptech buys and sells quality test equipment from hp, tektronix, including spectrum analyzers & peripherals, oscilloscope, frequency counters timers, signal generators, multimeters & voltmeters, RF & power meters, microwave amplifiers

Live scanner feeds for the Fire department for various sectors of the San Francisco Bay area.

Homemade LC Bandpass Filters for 20M, 30M, 40M In multi-station environments like special events, field day, portable operating, is very important to protect receivers from excessively strong signals. Bandpass filters help to protect your transceivers.

BaoFeng UV-5RA, UV-B5, UV-82, and Yaesu VX-6R Comparison

A squint at the world of LF This website was initially thrown together to provide ready availability to data being collected from the measurement of a transatlantic LF (Low Frequency) path.

Programming memories manually the Baofeng UV-5R

An article that explain with simple concepts and basic theory the correct usage of antenna tuners. It covers some aspects of common questions newcomers have on what antenna tuners are for, and what antenna tuners will never do.

Drake R4B receiver manual

A theoretical and experimental study of the effects of very large ground screens on 20 meter verticals

dedicated to the discussion & development of ALL amateur / ham radio Digital Voice & Data communication

Band filters for PA6Z made by PA9M, designed by W3NQN.

A large table wit properties of popular coaxial cables

A simple Drake R-4C receiver power supply modification

DXWatch provide live spots for FT5GA Glorioso dxpedition 2009

Test equipment and ham radio related manuals

NS8O portable generators

The Central Scotland FM Group has provided and is responsible for maintaining many of the repeaters now operating in West, South-West, Central and East Scotland.

Extension of the Kenwood TS-590S Programmable Function by CT7AEZ

The large listo of USA counties

Antenna Authority Inc. offers a wide assortment of directional, wideband antennas and other equipment specifically engineered for radio direction finding (DFing) and geolocation applications. Their product line includes _log periodic_, _cavity-backed spirals_, and _Yagi_ antennas, alongside covert antenna solutions for various operational requirements. The company emphasizes its expertise in designing and manufacturing specialized antennas for both overt and covert operations. Beyond standard offerings, Antenna Authority Inc. provides custom design services to meet specific client needs, focusing on tailored RF directional products. Their capabilities extend to developing antennas for vehicles and optimizing their operational performance in diverse scenarios. The firm is located at 3381 W. County Line Road, Douglasville, Ga. 30135-1145. Ferrel Bentley is associated with Antenna Authority Inc., which has been operating since at least 2005, as indicated by the copyright notice.

A monoband delta loop antenna for the 7 MHz. This vertically polarized DX Antenna is a full wavelength sngle side antenna and has a total length of 42.3 meters (137,1 inch) Can be easily setup with a flag pole or fishing pole as center top mast. For optimal performance lower side should be at 2 meter above the ground. This antenna offers a low radiation angle and 1 DB Gain.

CB radio, marine radio and accessories

Manufactures automatic mixers, analog and DSP signal processors, room combining and matrix mixers, and audio test equipment for just about any customer application.

Litchfield County New Milford Connecticut Harwinton Warren Watertown Waterbury Washington

Waiting For The Next Sunspot Cycle 2019-2030, how will be the next solay cycle and when it will begin

Mods for Kenwood TS-950SD / SDX