If you are under a certain age, you might not know the initialism VTVM. It stands for vacuum tube voltmeter....
IM-13
North America's Premiere Amateur Radio News Magazine
TWIAR
Headline News
Via the RSGB: GB2RS News Script for 16 August 2026
via the ARRL: Colombian Amateurs Help in Earthquake Response; Clear Frequencies Requested
via the ARRL: ARISS Receives Challenger-7 Recognition
via Amateur Radio Daily: CHOTA 2026: Churches and Chapels on the Air
via the ARRL: Colombian Emergency Network Activated Following Earthquake
via the ARRL: Colombian Amateurs Help in Earthquake Response; Clear Frequencies Requested
via the ARRL: ARISS Receives Challenger-7 Recognition
via Amateur Radio Daily: CHOTA 2026: Churches and Chapels on the Air
via the ARRL: Colombian Emergency Network Activated Following Earthquake
