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
6 Replies
856 Views
Last post October 19, 2025, 1542 UTC
by N2MLP
2 Replies
676 Views
Last post December 18, 2024, 2347 UTC
by Radiouser
10 Replies
511 Views
Last post October 04, 2025, 2342 UTC
by JustGreg
4 Replies
735 Views
Last post July 25, 2025, 2146 UTC
by N2MLP
9 Replies
1264 Views
Last post December 09, 2024, 2137 UTC
by Ct Yankee
6 Replies
938 Views
Last post December 05, 2024, 2134 UTC
by Andrew Yoder
11 Replies
1919 Views
Last post February 14, 2025, 1157 UTC
by RainBrandy
8 Replies
894 Views
Last post October 03, 2025, 2142 UTC
by N2MLP
2 Replies
245 Views
Last post October 09, 2025, 1946 UTC
by AlexRadioDX
2 Replies
240 Views
Last post October 04, 2025, 1826 UTC
by hflstnr
1 Replies
398 Views
Last post July 29, 2025, 1219 UTC
by ChrisSmolinski
1 Replies
573 Views
Last post October 03, 2025, 1623 UTC
by dxace1
2 Replies
489 Views
Last post July 30, 2025, 1606 UTC
by Rob.
2 Replies
821 Views
Last post July 29, 2025, 1441 UTC
by Rob.
8 Replies
2486 Views
Last post December 18, 2024, 1805 UTC
by radiogaga
6 Replies
371 Views
Last post October 03, 2025, 1520 UTC
by ChrisSmolinski
5 Replies
742 Views
Last post December 20, 2024, 2001 UTC
by PietariDX
1 Replies
939 Views
Last post December 10, 2024, 0223 UTC
by myteaquinn
4 Replies
596 Views
Last post December 11, 2024, 1520 UTC
by Ct Yankee
11 Replies
1151 Views
Last post October 01, 2025, 2034 UTC
by dxace1

 

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