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
1 Replies
148 Views
Last post October 30, 2025, 1702 UTC
by Ray Lalleu
1 Replies
133 Views
Last post November 02, 2025, 1819 UTC
by Ray Lalleu
1 Replies
118 Views
Last post November 17, 2025, 1743 UTC
by Ray Lalleu
1 Replies
121 Views
Last post October 31, 2025, 1721 UTC
by Ray Lalleu
1 Replies
613 Views
Last post March 18, 2022, 1618 UTC
by europirate
4 Replies
539 Views
Last post March 23, 2024, 1955 UTC
by EagleWave
0 Replies
758 Views
Last post November 23, 2019, 0953 UTC
by texas1dxer
3 Replies
678 Views
Last post May 31, 2022, 1505 UTC
by dave1965
1 Replies
622 Views
Last post December 29, 2019, 2054 UTC
by Rick
1 Replies
509 Views
Last post April 18, 2020, 0840 UTC
by kris
4 Replies
807 Views
Last post September 09, 2020, 1915 UTC
by ukdxer
3 Replies
294 Views
Last post October 22, 2025, 1728 UTC
by kris
2 Replies
647 Views
Last post December 13, 2019, 1630 UTC
by Ray Lalleu
1 Replies
527 Views
Last post December 22, 2019, 1215 UTC
by RainBrandy
2 Replies
866 Views
Last post April 24, 2021, 1518 UTC
by Bali_Frank
1 Replies
481 Views
Last post June 09, 2020, 1718 UTC
by Ray Lalleu
0 Replies
411 Views
Last post June 07, 2022, 1509 UTC
by Ray Lalleu
1 Replies
518 Views
Last post May 25, 2022, 1536 UTC
by Misti-Radio
1 Replies
457 Views
Last post May 28, 2022, 1548 UTC
by Shortwave_Listener
1 Replies
462 Views
Last post May 24, 2022, 2042 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 Garden Flag
by MitchellTimeDesigns