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.

Subject / Started by Last post
2 Replies
764 Views
Last post October 17, 2020, 1458 UTC
by texas1dxer
2 Replies
613 Views
Last post April 13, 2020, 1604 UTC
by SCH Got Sweden
1 Replies
488 Views
Last post June 15, 2020, 2254 UTC
by Ray Lalleu
3 Replies
404 Views
Last post December 08, 2024, 1455 UTC
by Ray Lalleu
1 Replies
371 Views
Last post April 06, 2025, 1359 UTC
by RainBrandy
3 Replies
690 Views
Last post October 31, 2020, 1645 UTC
by texas1dxer
1 Replies
611 Views
Last post May 16, 2020, 2051 UTC
by FOX
2 Replies
645 Views
Last post January 24, 2020, 1655 UTC
by FOX
2 Replies
262 Views
Last post October 24, 2025, 1359 UTC
by TRI International
1 Replies
574 Views
Last post July 27, 2020, 1653 UTC
by Ray Lalleu
2 Replies
760 Views
Last post July 30, 2020, 1856 UTC
by Ray Lalleu
0 Replies
521 Views
Last post July 24, 2020, 2339 UTC
by Harmony
3 Replies
804 Views
Last post November 16, 2021, 1418 UTC
by The Vault Keeper
0 Replies
1389 Views
Last post April 28, 2013, 1221 UTC
by Radio Spaceshuttle
2 Replies
749 Views
Last post December 31, 2021, 0952 UTC
by kris
2 Replies
626 Views
Last post January 09, 2022, 2351 UTC
by kris
0 Replies
1415 Views
Last post October 07, 2017, 1950 UTC
by Humat
1 Replies
488 Views
Last post January 16, 2024, 1545 UTC
by RainBrandy
1 Replies
643 Views
Last post January 16, 2024, 1529 UTC
by Ray Lalleu
5 Replies
1144 Views
Last post June 16, 2018, 1917 UTC
by Ray Lalleu

 

Normal Topic
Hot Topic (More than 15 replies)
Very Hot Topic (More than 25 replies)

Locked Topic
Sticky Topic
Poll


HFUnderground T-Shirt
HFUnderground T-Shirt
by MitchellTimeDesigns