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
674 Views
Last post March 14, 2022, 2239 UTC
by Ray Lalleu
10 Replies
1047 Views
Last post October 30, 2022, 2233 UTC
by kris
1 Replies
359 Views
Last post September 10, 2022, 1722 UTC
by Ray Lalleu
1 Replies
436 Views
Last post April 07, 2022, 1539 UTC
by Ray Lalleu
1 Replies
474 Views
Last post June 01, 2022, 1823 UTC
by Ray Lalleu
2 Replies
638 Views
Last post April 05, 2022, 1953 UTC
by FOX
0 Replies
247 Views
Last post October 16, 2022, 1355 UTC
by kris
1 Replies
377 Views
Last post November 09, 2022, 1611 UTC
by Ray Lalleu
0 Replies
238 Views
Last post April 29, 2024, 1805 UTC
by kris
1 Replies
406 Views
Last post August 17, 2022, 1629 UTC
by Ray Lalleu
1 Replies
517 Views
Last post March 11, 2022, 1711 UTC
by Ray Lalleu
0 Replies
338 Views
Last post August 13, 2022, 1514 UTC
by kris
1 Replies
514 Views
Last post February 10, 2023, 1531 UTC
by Shortwave_Listener
0 Replies
272 Views
Last post December 06, 2023, 1001 UTC
by kris
0 Replies
166 Views
Last post June 21, 2025, 0758 UTC
by Ray Lalleu
0 Replies
339 Views
Last post September 14, 2022, 1917 UTC
by kobalts
0 Replies
459 Views
Last post August 19, 2022, 1906 UTC
by ciasteczkowypotwor
0 Replies
501 Views
Last post August 07, 2022, 1353 UTC
by TRI International
3 Replies
671 Views
Last post November 07, 2021, 1118 UTC
by Ray Lalleu
2 Replies
575 Views
Last post November 21, 2021, 1213 UTC
by Grey Fox

 

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