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
569 Views
Last post November 06, 2021, 0939 UTC
by Bali_Frank
1 Replies
489 Views
Last post October 28, 2023, 2100 UTC
by europirate
1 Replies
227 Views
Last post August 10, 2025, 0944 UTC
by RainBrandy
0 Replies
462 Views
Last post November 01, 2019, 1732 UTC
by Ray Lalleu
0 Replies
342 Views
Last post September 02, 2020, 2057 UTC
by Ray Lalleu
1 Replies
634 Views
Last post July 24, 2021, 1749 UTC
by RainBrandy
1 Replies
554 Views
Last post May 12, 2022, 2233 UTC
by kris
0 Replies
242 Views
Last post July 08, 2023, 1624 UTC
by Ray Lalleu
3 Replies
498 Views
Last post May 04, 2024, 2025 UTC
by Ray Lalleu
1 Replies
545 Views
Last post May 05, 2019, 1225 UTC
by The Ether Hacker
1 Replies
547 Views
Last post May 22, 2020, 1841 UTC
by FOX
0 Replies
420 Views
Last post February 27, 2021, 0915 UTC
by Ray Lalleu
0 Replies
418 Views
Last post February 10, 2022, 1706 UTC
by Ray Lalleu
0 Replies
307 Views
Last post January 30, 2024, 1458 UTC
by Ray Lalleu
0 Replies
128 Views
Last post October 30, 2025, 1716 UTC
by Ray Lalleu
0 Replies
298 Views
Last post November 29, 2020, 0756 UTC
by Ray Lalleu
0 Replies
424 Views
Last post September 14, 2019, 0843 UTC
by Ray Lalleu
0 Replies
409 Views
Last post June 05, 2021, 2126 UTC
by Ray Lalleu
0 Replies
275 Views
Last post May 13, 2023, 1857 UTC
by Ray Lalleu
2 Replies
646 Views
Last post March 24, 2025, 2158 UTC
by kris

 

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

Locked Topic
Sticky Topic
Poll


HFUnderground Mug
HFUnderground Mug
by MitchellTimeDesigns