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
181 Views
Last post October 23, 2024, 1611 UTC
by Ray Lalleu
0 Replies
199 Views
Last post April 07, 2024, 1350 UTC
by Ray Lalleu
1 Replies
315 Views
Last post August 08, 2024, 1825 UTC
by Ray Lalleu
1 Replies
477 Views
Last post December 29, 2023, 1135 UTC
by europirate
1 Replies
204 Views
Last post October 17, 2024, 1817 UTC
by dxace1
0 Replies
246 Views
Last post March 02, 2024, 1948 UTC
by Ray Lalleu
0 Replies
251 Views
Last post February 28, 2024, 1919 UTC
by Ray Lalleu
0 Replies
229 Views
Last post March 20, 2024, 1602 UTC
by Ray Lalleu
0 Replies
226 Views
Last post December 24, 2022, 1708 UTC
by Ray Lalleu
0 Replies
295 Views
Last post August 02, 2020, 1142 UTC
by dandan22
0 Replies
222 Views
Last post March 09, 2023, 2235 UTC
by Ray Lalleu
2 Replies
409 Views
Last post August 09, 2024, 2223 UTC
by Ray Lalleu
1 Replies
348 Views
Last post July 04, 2024, 2025 UTC
by kris
0 Replies
148 Views
Last post August 08, 2023, 2002 UTC
by Ray Lalleu
0 Replies
218 Views
Last post February 14, 2025, 1953 UTC
by Ray Lalleu
1 Replies
442 Views
Last post June 29, 2021, 1949 UTC
by Bali_Frank
0 Replies
366 Views
Last post October 30, 2023, 1932 UTC
by Ray Lalleu
0 Replies
421 Views
Last post August 19, 2021, 1907 UTC
by Ray Lalleu
0 Replies
180 Views
Last post July 10, 2025, 1849 UTC
by Ray Lalleu
1 Replies
437 Views
Last post August 14, 2021, 1834 UTC
by kris

 

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