General Radio Discussion

We seek to understand and document all radio transmissions, legal and otherwise, as part of the radio listening hobby. We do not encourage any radio operations contrary to regulations. Always consult with the appropriate authorities if you have questions concerning what is permissible in your locale.

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Subject / Started by	Replies / Views	Last post
Privacy Policy Started by ChrisSmolinski	0 Replies 37599 Views	May 22, 2018, 1204 UTC by ChrisSmolinski
Posting images on the HFU Started by ChrisSmolinski	10 Replies 47528 Views	October 16, 2022, 1606 UTC by MDK2
The HF Underground Wiki Started by ChrisSmolinski	13 Replies 59533 Views	July 01, 2022, 0121 UTC by Teotwaki
Discord Chat Link & FAQs Started by ChrisSmolinski	0 Replies 5409 Views	May 16, 2026, 2102 UTC by ChrisSmolinski
FLASH: A warning against potential Russian cyber attacks Started by ~SIGINT~	0 Replies 1763 Views	February 25, 2022, 0211 UTC by ~SIGINT~
TDoA service temporarily suspended outside of ham band or time station frequency Started by ~SIGINT~	0 Replies 1713 Views	February 16, 2022, 0104 UTC by ~SIGINT~
CBC/Radio-Canada: NATO surveillance plane watches Russia's activity in Ukraine Started by ~SIGINT~	4 Replies 2827 Views	October 25, 2022, 0125 UTC by ~SIGINT~
Nuts and Volts: RF Interference Started by ~SIGINT~	0 Replies 1701 Views	February 05, 2022, 0632 UTC by ~SIGINT~
How DXers can contribute to ionospheric research - 14 Oct 2023 solar eclipse Started by ~SIGINT~	1 Replies 2281 Views	September 26, 2023, 1227 UTC by BoomboxDX
Fair Radio Sales is Closing Started by ~SIGINT~	1 Replies 2470 Views	August 05, 2023, 1018 UTC by NJQA
The end of the long dash: CBC stops broadcasting official time signal Started by ~SIGINT~	0 Replies 2302 Views	October 11, 2023, 0106 UTC by ~SIGINT~
International broadcasters dropped from WRMI schedule Started by ~SIGINT~	0 Replies 1716 Views	July 21, 2023, 0153 UTC by ~SIGINT~
Operation Tinker Bell Started by ~SIGINT~	0 Replies 1717 Views	April 11, 2021, 1513 UTC by ~SIGINT~
WWVB (60 kHz) Service Degradation 07 APR 2024 Started by ~SIGINT~	9 Replies 7613 Views	October 13, 2024, 0236 UTC by autovon
Airspy Summer Promo 2021 - 28 June to 04 July 2021 Started by ~SIGINT~	0 Replies 1702 Views	June 28, 2021, 1547 UTC by ~SIGINT~
Rohde & Schwarz Subcontracted for Australian HF Communications Programme Started by ~SIGINT~	0 Replies 1799 Views	April 28, 2023, 0035 UTC by ~SIGINT~
Airspy Summer Sale: 15% Off from June 17-25 2023 Started by ~SIGINT~	0 Replies 1805 Views	June 18, 2023, 0028 UTC by ~SIGINT~
Fear of underpants? Started by Zoidberg	1 Replies 2818 Views	December 13, 2010, 0022 UTC by L Cee
QSL received for TCS Shortwave Relay Network Started by Zoidberg	3 Replies 3165 Views	October 19, 2011, 2131 UTC by jFarley
Real radio wars Started by Zoidberg	2 Replies 4446 Views	April 22, 2011, 2035 UTC by John Poet

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