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
3 Replies
895 Views
Last post May 04, 2018, 2037 UTC
by Oliver
4 Replies
885 Views
Last post April 01, 2022, 1947 UTC
by kris
2 Replies
536 Views
Last post June 24, 2022, 1609 UTC
by Shortwave_Listener
1 Replies
591 Views
Last post June 10, 2025, 1827 UTC
by dave1965
0 Replies
317 Views
Last post June 07, 2025, 1906 UTC
by Ray Lalleu
3 Replies
1521 Views
Last post June 15, 2025, 1339 UTC
by TRI International
3 Replies
1051 Views
Last post June 22, 2018, 2256 UTC
by Brian
1 Replies
542 Views
Last post June 09, 2025, 0728 UTC
by dave1965
2 Replies
293 Views
Last post August 13, 2023, 1654 UTC
by Magnitic
0 Replies
1840 Views
Last post September 06, 2015, 0026 UTC
by ChrisSmolinski
0 Replies
178 Views
Last post December 08, 2024, 0208 UTC
by kris
2 Replies
550 Views
Last post December 25, 2021, 0002 UTC
by kris
0 Replies
410 Views
Last post March 28, 2021, 2115 UTC
by kris
1 Replies
427 Views
Last post March 06, 2022, 1955 UTC
by Ray Lalleu
4 Replies
797 Views
Last post October 28, 2023, 2344 UTC
by N2MLP
1 Replies
319 Views
Last post January 04, 2023, 1821 UTC
by Misti-Radio
0 Replies
442 Views
Last post September 14, 2021, 2246 UTC
by kris
1 Replies
496 Views
Last post June 22, 2021, 2108 UTC
by Ray Lalleu
2 Replies
649 Views
Last post November 28, 2019, 1251 UTC
by refmo
2 Replies
454 Views
Last post October 10, 2022, 1941 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 T-Shirt
by MitchellTimeDesigns