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
3 Replies
550 Views
Last post September 17, 2022, 1959 UTC
by TRI International
0 Replies
278 Views
Last post November 05, 2023, 1813 UTC
by Ray Lalleu
1 Replies
263 Views
Last post September 21, 2024, 2025 UTC
by Fisherman
0 Replies
420 Views
Last post August 17, 2018, 2010 UTC
by Ray Lalleu
0 Replies
403 Views
Last post September 27, 2019, 1655 UTC
by Ray Lalleu
0 Replies
176 Views
Last post May 26, 2023, 1957 UTC
by Ray Lalleu
0 Replies
216 Views
Last post April 05, 2025, 0752 UTC
by Ray Lalleu
0 Replies
515 Views
Last post May 16, 2019, 2003 UTC
by Ray Lalleu
1 Replies
414 Views
Last post March 08, 2021, 1710 UTC
by kris
0 Replies
185 Views
Last post December 22, 2024, 2302 UTC
by Ray Lalleu
0 Replies
196 Views
Last post September 27, 2023, 2005 UTC
by Ray Lalleu
1 Replies
154 Views
Last post July 04, 2025, 1918 UTC
by RadioLongWire
0 Replies
493 Views
Last post June 04, 2018, 1702 UTC
by Ray Lalleu
0 Replies
361 Views
Last post April 11, 2022, 1626 UTC
by Ray Lalleu
0 Replies
420 Views
Last post March 31, 2019, 1938 UTC
by Ray Lalleu
0 Replies
384 Views
Last post January 29, 2021, 2353 UTC
by Ray Lalleu
1 Replies
495 Views
Last post January 06, 2022, 1405 UTC
by dxace1
1 Replies
268 Views
Last post December 03, 2022, 0919 UTC
by Bali_Frank
1 Replies
353 Views
Last post December 31, 2023, 1618 UTC
by europirate
0 Replies
559 Views
Last post October 28, 2018, 1356 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