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MARCA - an amateur radio experimential and education organization in the Phoenix, Arizona area

Serving Henry,Knox,Stark,Rock Island, Mercer, Lee, Warren,Peoria,Bureau,Tazewell,Woodford,Marshall, Fulton, counties in Illinois and Scott county in Iowa.

Christians of Idaho Amateur Radio Club, Inc.

SEAARCis located in Medicine Hat, Alberta

The understanding of the A and K indexes will become a very important issue when one begins serious HF operation.

VB2C VC2C VB2V VB2R

Traveling Wave Tubes , Conventional Traveling Wave Tubes, Microwave Power Modules manufacturer

Couplings Designer for iPhone. Modern advanced filter synthesis using coupling matrix techniques. There's a free LITE version limited to 4th order filters.

Web Site Of WB1GRB Located in Stamford, Ct, US.

Using Spectrum Lab for the reception of VLF natural radio

Personal web site

Peninsula Amateur Radio Club - W4MT - Newport News, Virginia

50,006.0 MHz from LL55SH by Qatar Amateur Radio Society

This project is a portable device used to automatically point a directional antenna towards an orbiting satellite. It takes all the effort out of little kids holding the antenna and figuring out where to point it. It allows students to talk through Amateur Radio satellites or download weather satellite images. Note: This is a complex DIY project for the advanced kit constructor.

KF6SPI Technical blog, audio, hifi, car and ham radio topics

5H/ZS6GH C91/ZS6GH / 3DA1GH

VHF Yagi antennas with low Q, extending the boom.

An improved version of the audio interface commonly used to connect a computer soundcard to a transceiver\'s receive and transmit audio circuits

24915 KHz 12 mtrs band from JN63KR

Collection of Telegraph Keys & related items

A schematic diagram of a homemade direct conversion receiver for 30 meters band

The Badger Contesters is a club of like-minded hams who are interested in VHF/UHF/SHF weak signal communications. Our geographic focus is Wisconsin, however hams in Northern Illinois, Michigan's UP, and Eastern Minnesota are welcome to join us.

50 Ohm Coax Antenna Power Splitter and Matching Network

Phased Spaced Active Whips and Broadband Loops by WA1ION

Information about Starved Rock Radio Club and PRINCETON HamFest

YRC the Yellowstone amateur radio club

Table reference for serial ports commands supported by TM-D700A

Serving Akron, Ohio, Summit County and the surrounding area since 1981

The standard J-Pole antenna is a end fed 1/2 wavelength antenna, in this article is explained also how to build an expanded Super J Pole that provides about 4.5 dbd gain. These antennas can be built from EMT electric conduit pipe

This site is basically for the begeners (SWL) of india. This site is supporting to digital communication for hams also.

Running 150 mW by OK0EN

A non profit organisation run entirely by volunteers to promote Low Power Radio.

This webpage allows you to create custom QSL cards (confirmation of radio contact) as PDFs for printing. You can personalize them with images and information. The cards are standard size (5.5" x 3.5") but can be adjusted slightly for easier printing on regular paper. You'll need Adobe Acrobat Reader to view the PDFs. There's also an option to create a free account to save your information for future cards.

Serving the Community and Amateur Radio for over 50 Years

Amateur Radio Coaxial Antennas by G3TXQ

Missouri USA

Portuguese islands plaque

High Performance Communications Receiver AKA, The Progressive Receiver

There are some aspects in regards to mailing QSL letters to Russia which you should know

Capri island EU 31 iota referens

K2Net is a remote operation windows software for the Elecraft K2, and allow remote control over internet or wi-fi networks by G4ILO

A collection of projects and equiment home made for 24 GHz operations

Operating NVIS mode, understanding operation frequencies, choosing the proper antenna to operate with the Near Vertical Incidence Skywave propagation

Beacon website of WE4S, Grady Donaldson, located in McDonough, GA. EM73TM.

A group of Treasure Valley Hams have formed a group that is interested in experimenting with ballooning and using Amateur Radio and APRS to further our knowledge in communications.

G3CWI contest software reviews, compare NA SD TR CT and WriteLog

How-to decode and Display APRS Packets from WebSDR Audio using linux computer