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
317 Views
Last post April 20, 2023, 2038 UTC
by N2MLP
20 Replies
1523 Views
Last post April 20, 2023, 1246 UTC
by ChrisSmolinski
0 Replies
380 Views
Last post April 20, 2023, 1243 UTC
by ChrisSmolinski
0 Replies
311 Views
Last post April 20, 2023, 0513 UTC
by Shortwave_Listener
20 Replies
1779 Views
Last post April 20, 2023, 0333 UTC
by TheHappyWanker
11 Replies
1143 Views
Last post April 20, 2023, 0241 UTC
by Grumpy Grandpa
6 Replies
558 Views
Last post April 20, 2023, 0045 UTC
by myteaquinn
13 Replies
1191 Views
Last post April 19, 2023, 1318 UTC
by ChrisSmolinski
9 Replies
926 Views
Last post April 19, 2023, 1317 UTC
by ChrisSmolinski
12 Replies
855 Views
Last post April 19, 2023, 1252 UTC
by ChrisSmolinski
1 Replies
293 Views
Last post April 19, 2023, 0420 UTC
by canswl
2 Replies
365 Views
Last post April 19, 2023, 0201 UTC
by RobRich
21 Replies
1799 Views
Last post April 19, 2023, 0144 UTC
by Grumpy Grandpa
5 Replies
465 Views
Last post April 18, 2023, 2325 UTC
by ~SIGINT~
10 Replies
877 Views
Last post April 18, 2023, 2126 UTC
by dxwingr
7 Replies
761 Views
Last post April 18, 2023, 1719 UTC
by NAPRSSW
1 Replies
297 Views
Last post April 18, 2023, 1503 UTC
by ChrisSmolinski
14 Replies
1183 Views
Last post April 18, 2023, 1432 UTC
by Pigmeat
3 Replies
505 Views
Last post April 18, 2023, 1427 UTC
by Pigmeat
3 Replies
516 Views
Last post April 18, 2023, 1412 UTC
by flexoman61

 

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

Locked Topic
Sticky Topic
Poll


HFUnderground T-Shirt
HFUnderground House Flag
by MitchellTimeDesigns