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
0 Replies
318 Views
Last post December 07, 2022, 1949 UTC
by Ray Lalleu
0 Replies
298 Views
Last post January 15, 2023, 1843 UTC
by Ray Lalleu
0 Replies
313 Views
Last post January 14, 2023, 1817 UTC
by Ray Lalleu
0 Replies
314 Views
Last post January 27, 2023, 1801 UTC
by Ray Lalleu
0 Replies
307 Views
Last post December 30, 2022, 1721 UTC
by Ray Lalleu
0 Replies
375 Views
Last post November 29, 2022, 1716 UTC
by Ray Lalleu
0 Replies
503 Views
Last post December 17, 2022, 1604 UTC
by Intruder
0 Replies
242 Views
Last post July 27, 2024, 2100 UTC
by europirate
0 Replies
293 Views
Last post December 13, 2024, 2130 UTC
by Jari Finland
0 Replies
462 Views
Last post October 07, 2023, 1909 UTC
by FOX
0 Replies
317 Views
Last post January 21, 2023, 2023 UTC
by Ray Lalleu
0 Replies
314 Views
Last post February 09, 2023, 1731 UTC
by Ray Lalleu
0 Replies
333 Views
Last post January 18, 2023, 1746 UTC
by Ray Lalleu
0 Replies
304 Views
Last post January 10, 2023, 1733 UTC
by Ray Lalleu
0 Replies
329 Views
Last post January 31, 2023, 1733 UTC
by Ray Lalleu
0 Replies
486 Views
Last post July 19, 2025, 2024 UTC
by europirate
0 Replies
484 Views
Last post October 26, 2023, 2015 UTC
by FOX
0 Replies
473 Views
Last post August 01, 2023, 1929 UTC
by FOX
0 Replies
351 Views
Last post November 06, 2022, 1851 UTC
by Rick
1 Replies
438 Views
Last post September 30, 2022, 2046 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 House Flag
by MitchellTimeDesigns