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

Christians of Idaho Amateur Radio Club, Inc.

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

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

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

I5JVA Carlo Home Page

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

i4chy 10 ghz tropo eme rs

SEAARCis located in Medicine Hat, Alberta

Peninsula Amateur Radio Club - W4MT - Newport News, Virginia

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

QRP Operations by RV3APM

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

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

5H/ZS6GH C91/ZS6GH / 3DA1GH

50,006.0 MHz from LL55SH by Qatar Amateur Radio Society

Serving the Community and Amateur Radio for over 50 Years

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.

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

Information about Starved Rock Radio Club and PRINCETON HamFest

High Performance Communications Receiver AKA, The Progressive Receiver

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.

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.

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

Alpha 87a Communication can be used either stand alone to control the Alpha 87a amplifier or together with several CAT-Control programs by HB9ZS

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

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.

EA5FSC Home page.

Portuguese islands plaque

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

Map of Argentina Locators

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