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
423 Views
Last post October 21, 2019, 1525 UTC
by kris
2 Replies
432 Views
Last post October 16, 2022, 2009 UTC
by Ray Lalleu
4 Replies
824 Views
Last post December 28, 2020, 0726 UTC
by Ronald_Mullis
0 Replies
143 Views
Last post May 17, 2025, 1846 UTC
by kris
1 Replies
344 Views
Last post July 30, 2022, 2322 UTC
by Ray Lalleu
1 Replies
426 Views
Last post June 26, 2021, 2058 UTC
by Ray Lalleu
1 Replies
518 Views
Last post August 07, 2020, 2206 UTC
by Gino Italy
0 Replies
847 Views
Last post June 15, 2017, 2059 UTC
by kris
4 Replies
543 Views
Last post November 20, 2022, 2046 UTC
by kobalts
0 Replies
232 Views
Last post May 18, 2023, 1528 UTC
by kris
1 Replies
424 Views
Last post November 01, 2022, 2248 UTC
by Shortwave_Listener
1 Replies
424 Views
Last post April 14, 2021, 1917 UTC
by Ray Lalleu
0 Replies
441 Views
Last post March 26, 2022, 2300 UTC
by kris
0 Replies
370 Views
Last post September 13, 2021, 1803 UTC
by kris
0 Replies
409 Views
Last post October 26, 2021, 2338 UTC
by kris
3 Replies
407 Views
Last post February 25, 2024, 1600 UTC
by Dxcan
1 Replies
477 Views
Last post August 28, 2021, 2006 UTC
by Ray Lalleu
2 Replies
518 Views
Last post December 09, 2019, 2044 UTC
by KaySeeks
1 Replies
385 Views
Last post February 03, 2021, 1926 UTC
by Ray Lalleu
6 Replies
773 Views
Last post April 03, 2024, 2140 UTC
by Benoit LEVEQUE

 

Normal Topic
Hot Topic (More than 15 replies)
Very Hot Topic (More than 25 replies)

Locked Topic
Sticky Topic
Poll


HFUnderground T-Shirt
HFUnderground Garden Flag
by MitchellTimeDesigns