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
994 Views
Last post January 19, 2023, 1245 UTC
by mike
0 Replies
1006 Views
Last post January 12, 2023, 2143 UTC
by ~SIGINT~
0 Replies
936 Views
Last post January 07, 2023, 2337 UTC
by webqaz
1 Replies
1176 Views
Last post January 05, 2023, 0005 UTC
by Shortwave_Listener
0 Replies
919 Views
Last post January 04, 2023, 0049 UTC
by ~SIGINT~
4 Replies
1390 Views
Last post January 03, 2023, 1545 UTC
by myteaquinn
0 Replies
974 Views
Last post December 31, 2022, 2245 UTC
by Skipmuck
0 Replies
960 Views
Last post December 30, 2022, 1706 UTC
by mike
0 Replies
887 Views
Last post December 30, 2022, 1513 UTC
by mike
0 Replies
919 Views
Last post December 30, 2022, 1417 UTC
by mike
0 Replies
888 Views
Last post December 29, 2022, 1403 UTC
by mike
1 Replies
1110 Views
Last post December 29, 2022, 0559 UTC
by Shortwave_Listener
0 Replies
899 Views
Last post December 27, 2022, 1447 UTC
by Ethernut
0 Replies
883 Views
Last post December 24, 2022, 2055 UTC
by Shortwave_Listener
0 Replies
906 Views
Last post December 23, 2022, 1648 UTC
by Shortwave_Listener
1 Replies
1009 Views
Last post December 21, 2022, 2330 UTC
by ~SIGINT~
2 Replies
1130 Views
Last post December 21, 2022, 2307 UTC
by Shortwave_Listener
0 Replies
867 Views
Last post December 19, 2022, 1345 UTC
by ChrisSmolinski
0 Replies
842 Views
Last post December 19, 2022, 1338 UTC
by ChrisSmolinski
10 Replies
1729 Views
Last post December 17, 2022, 2313 UTC
by Andrew Yoder

 

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