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
283 Views
Last post August 05, 2023, 2027 UTC
by Ray Lalleu
0 Replies
261 Views
Last post December 03, 2023, 1155 UTC
by Ray Lalleu
0 Replies
294 Views
Last post February 04, 2024, 0953 UTC
by Ray Lalleu
1 Replies
369 Views
Last post November 18, 2022, 1449 UTC
by Bali_Frank
0 Replies
294 Views
Last post December 26, 2022, 0847 UTC
by Ray Lalleu
0 Replies
138 Views
Last post December 05, 2025, 1002 UTC
by Ray Lalleu
1 Replies
521 Views
Last post May 31, 2022, 1821 UTC
by Ray Lalleu
0 Replies
418 Views
Last post June 06, 2021, 0858 UTC
by Ray Lalleu
0 Replies
266 Views
Last post January 01, 2023, 0949 UTC
by Ray Lalleu
0 Replies
405 Views
Last post December 24, 2022, 1112 UTC
by Ray Lalleu
0 Replies
306 Views
Last post February 01, 2023, 1422 UTC
by Ray Lalleu
1 Replies
412 Views
Last post February 02, 2023, 1551 UTC
by Shortwave_Listener
0 Replies
189 Views
Last post July 19, 2025, 1658 UTC
by Ray Lalleu
0 Replies
232 Views
Last post November 08, 2024, 1824 UTC
by Ray Lalleu
0 Replies
367 Views
Last post July 30, 2023, 0747 UTC
by Ray Lalleu
0 Replies
311 Views
Last post June 08, 2023, 0104 UTC
by Ray Lalleu
0 Replies
500 Views
Last post July 11, 2021, 0906 UTC
by Ray Lalleu
0 Replies
246 Views
Last post March 23, 2025, 1414 UTC
by Ray Lalleu
1 Replies
541 Views
Last post July 21, 2021, 1728 UTC
by Bali_Frank
0 Replies
221 Views
Last post July 26, 2025, 1742 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