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
7 Replies
2074 Views
Last post April 28, 2023, 1534 UTC
by kris
0 Replies
1217 Views
Last post April 26, 2023, 0506 UTC
by CyberHero
0 Replies
1209 Views
Last post April 23, 2023, 1832 UTC
by Kestrel
0 Replies
1127 Views
Last post April 19, 2023, 1715 UTC
by MDK2
0 Replies
1055 Views
Last post April 16, 2023, 2009 UTC
by MDK2
1 Replies
1332 Views
Last post April 13, 2023, 1429 UTC
by kris
4 Replies
2711 Views
Last post April 04, 2023, 2334 UTC
by ~SIGINT~
0 Replies
1083 Views
Last post March 28, 2023, 1505 UTC
by kris
0 Replies
1180 Views
Last post March 26, 2023, 2107 UTC
by ~SIGINT~
0 Replies
1126 Views
Last post March 26, 2023, 0242 UTC
by MDK2
6 Replies
2804 Views
Last post March 22, 2023, 1938 UTC
by Token
0 Replies
1246 Views
Last post March 21, 2023, 0615 UTC
by MDK2
0 Replies
1119 Views
Last post March 20, 2023, 1305 UTC
by kris
2 Replies
1799 Views
Last post March 19, 2023, 0849 UTC
by tiNG
0 Replies
1134 Views
Last post March 16, 2023, 1209 UTC
by ChrisSmolinski
0 Replies
1268 Views
Last post March 10, 2023, 0928 UTC
by kris
0 Replies
1534 Views
Last post February 24, 2023, 1208 UTC
by Sealord
0 Replies
1269 Views
Last post February 21, 2023, 1953 UTC
by kris
1 Replies
1273 Views
Last post February 19, 2023, 2145 UTC
by MDK2
0 Replies
1258 Views
Last post February 19, 2023, 0216 UTC
by MDK2

 

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