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Founded in 1959

W6OPO report on Icom IC-7700 stress test to verify PA integrity under high duty-cycle usage

Two receivers compared, Drake R8A and Palstar R30

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

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.

CEMARC is ARRL Affiliated Council of Clubs representing the Ham Radio Community in Eastern Massachusetts.

I5JVA Carlo Home Page

QSL MANAGERS by IK3GER - Updated daily by ham fellows around the world interested in DX-ing

i4chy 10 ghz tropo eme rs

Homemade RF limiter project, to protect the K3 receiver front-end for high radiofrequency based on the original KD9SV project.

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

SEAARCis located in Medicine Hat, Alberta

Peninsula Amateur Radio Club - W4MT - Newport News, Virginia

QRP Operations by RV3APM

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

50,006.0 MHz from LL55SH by Qatar Amateur Radio Society

Putting the X7 at Science Festival 2004

VHF beacon Located in JN58ic

Using Spectrum Lab for the reception of VLF natural radio

Personal web site

VB2C VC2C VB2V VB2R

Qsl card collection at VU2NAN blog

Serving the Community and Amateur Radio for over 50 Years

5H/ZS6GH C91/ZS6GH / 3DA1GH

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

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

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

Information about Starved Rock Radio Club and PRINCETON HamFest

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

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.

High Performance Communications Receiver AKA, The Progressive Receiver

24915 KHz 12 mtrs band from JN63KR

Running 150 mW by OK0EN

QSL Cards design and printing, offer free shipping and free graphic design from any quantity of photos and graphics

Phased Spaced Active Whips and Broadband Loops by WA1ION

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

Table reference for serial ports commands supported by TM-D700A

Capri island EU 31 iota referens

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

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.

DX Maps provides a specialized map printing service, focusing on amateur radio applications such as world prefix maps and custom great circle projections. The platform allows radio operators to visualize propagation paths and DX entities relevant to their QTH and operational goals. This service supports the creation of high-quality, large-format maps tailored for shack display or operational planning. The service facilitates the generation of personalized maps, which can include specific callsign locations, beam headings, and other critical amateur radio data points. Users can specify parameters to create maps that aid in understanding global propagation conditions and optimizing antenna aiming for long-distance contacts. The UK-based operation ensures a localized service for European hams, with international shipping options available. DX Maps also offers QSL card printing, complementing its mapping services.

Bruce K1XR Collins Radio Collection pages

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

EA5FSC Home page.

Portuguese islands plaque

This calculator ask as input diameter, lenght turn and frequencu and will return L and Q