What happened to the sunspots ?

July 13, 2015 No comments

Giant sunspot group AR1944 seen in January of 2014. Credit: NASA/SDO by Steve Davidson  AUSTIN, Texas, July 9, 2015 – On June 30, 2015 the globally re... Read more

Multitalent QUADRO – Cutting – insulation stripping – twisting – crimping.

February 16, 2016 No comments

The unmatched integration of four different functions: Cutting – insulation stripping – twisting – crimping. The quick reloading of connector sleeves... Read more

Icom IC 7851 vs IC 7800 Local Oscillator C N Characteristics Comparison

December 16, 2015 No comments

Icom IC 7851 vs IC 7800 Video from Icom Inc. showing a local oscillator C/N characteristics comparison between Icom’s IC-7851 and IC-7800 HF/50/... Read more

A Solar Flare Almost Sparked a Nuclear War in 1967

August 10, 2016 No comments

Aerial view of three radar stations at the Ballistic Missile Early Warning System in Anderson, Alaska, in 1962. Image: Wikimedia by Maddie Stone ... Read more

New Technology May Double Radio Frequency Data Capacity

March 22, 2015 No comments

  “A team of Columbia Engineering researchers has invented a technology—full-duplex radio integrated circuits (ICs)—that can be implemented... Read more

Mosley PRO-96-S 10, 12, 15, 17, 20, 30, 40 Meters

February 14, 2015 No comments

Mosley PRO-96-S    10, 12, 15, 17, 20, 30, 40 Meter 4 Element on 40 3 Elements on 30 5 Elements on 12, 15, 17, 20 8 Elements on 10 No measuring, Pre-d... Read more

Indoor Attic Dipole Antenna for Ham Radio & CQ Antennas Center Insulators

January 24, 2018 No comments

“Viewer request to try out an antenna for Ham Radio in the attic. Using the CQ Antennas Center Insulators from KE5FEN. Thanks David for the insu... Read more

CQ’s November Issue Preview

October 18, 2016 No comments

“CQ’s November issue is a mini contest special . . . with plenty for the non-contester as well! We start with a behind-the-scenes look at... Read more

4U70UN United Nations

October 07, 2015 No comments

Members of United Nations Amateur Radio Club will be active from United Nations Headquarters New York in celbration of 70th anniversary of United Nati... Read more

ROIP-102 Radio Repeater or Radio Trunking SIP Gateway Full PTT control (IETF SIP V2)

July 14, 2015 No comments

What is a Cross-Network Gateway? It enables voice communications among the Radio, VoIP, and Public Announce (PA)  networks. It incorporates Radio over... Read more