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
1 Replies
281 Views
Last post July 10, 2023, 2226 UTC
by kris
1 Replies
526 Views
Last post July 27, 2021, 2038 UTC
by kris
0 Replies
336 Views
Last post September 04, 2020, 2103 UTC
by Ray Lalleu
0 Replies
420 Views
Last post November 03, 2019, 0750 UTC
by Ray Lalleu
0 Replies
512 Views
Last post August 02, 2018, 2057 UTC
by Ray Lalleu
0 Replies
133 Views
Last post August 11, 2025, 1842 UTC
by Ray Lalleu
2 Replies
452 Views
Last post October 23, 2024, 1701 UTC
by Alex BLR
0 Replies
373 Views
Last post October 29, 2023, 1812 UTC
by Ray Lalleu
0 Replies
235 Views
Last post February 01, 2025, 2215 UTC
by Ray Lalleu
0 Replies
347 Views
Last post March 12, 2023, 1748 UTC
by Ray Lalleu
0 Replies
442 Views
Last post July 02, 2019, 1655 UTC
by Ray Lalleu
0 Replies
367 Views
Last post July 05, 2024, 2108 UTC
by Ray Lalleu
1 Replies
642 Views
Last post October 05, 2018, 1740 UTC
by Oliver
1 Replies
220 Views
Last post September 20, 2025, 2303 UTC
by Panda_NL
1 Replies
457 Views
Last post December 10, 2023, 1439 UTC
by FOX
0 Replies
348 Views
Last post January 06, 2021, 1530 UTC
by Ray Lalleu
1 Replies
513 Views
Last post April 10, 2020, 1942 UTC
by kris
2 Replies
708 Views
Last post February 26, 2019, 2329 UTC
by PirateSWL
0 Replies
264 Views
Last post March 07, 2024, 2037 UTC
by Ray Lalleu
3 Replies
395 Views
Last post April 28, 2023, 1855 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