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
12 Replies
1017 Views
Last post July 28, 2025, 0209 UTC
by ChrisLobdell
8 Replies
909 Views
Last post July 27, 2025, 2327 UTC
by hsmith77
3 Replies
647 Views
Last post July 27, 2025, 1729 UTC
by Treehouse SWL
3 Replies
608 Views
Last post July 27, 2025, 1529 UTC
by N2MLP
3 Replies
488 Views
Last post July 27, 2025, 1528 UTC
by N2MLP
12 Replies
916 Views
Last post July 27, 2025, 1527 UTC
by N2MLP
11 Replies
875 Views
Last post July 27, 2025, 1526 UTC
by N2MLP
12 Replies
1088 Views
Last post July 27, 2025, 1525 UTC
by N2MLP
7 Replies
704 Views
Last post July 27, 2025, 1524 UTC
by N2MLP
4 Replies
458 Views
Last post July 27, 2025, 1523 UTC
by N2MLP
3 Replies
422 Views
Last post July 27, 2025, 1522 UTC
by N2MLP
5 Replies
611 Views
Last post July 27, 2025, 1521 UTC
by N2MLP
3 Replies
419 Views
Last post July 27, 2025, 1520 UTC
by N2MLP
2 Replies
370 Views
Last post July 27, 2025, 0235 UTC
by Radiouser
2 Replies
510 Views
Last post July 26, 2025, 2107 UTC
by radio56
7 Replies
956 Views
Last post July 26, 2025, 1844 UTC
by Tony_Pavick
4 Replies
870 Views
Last post July 26, 2025, 1718 UTC
by N2MLP
11 Replies
983 Views
Last post July 26, 2025, 1236 UTC
by ChrisSmolinski
3 Replies
410 Views
Last post July 26, 2025, 0351 UTC
by dxace1
13 Replies
1100 Views
Last post July 26, 2025, 0241 UTC
by hflstnr

 

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