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
2 Replies
671 Views
Last post October 11, 2023, 1455 UTC
by TRI International
0 Replies
424 Views
Last post October 09, 2023, 2121 UTC
by TRI International
0 Replies
413 Views
Last post October 08, 2023, 1112 UTC
by TRI International
0 Replies
452 Views
Last post October 07, 2023, 0950 UTC
by TRI International
0 Replies
457 Views
Last post October 05, 2023, 0129 UTC
by ~SIGINT~
2 Replies
1312 Views
Last post October 04, 2023, 0011 UTC
by jfarley1
0 Replies
733 Views
Last post August 05, 2023, 1052 UTC
by TRI International
0 Replies
540 Views
Last post July 29, 2023, 0318 UTC
by ~SIGINT~
2 Replies
498 Views
Last post July 28, 2023, 1342 UTC
by ~SIGINT~
0 Replies
862 Views
Last post June 15, 2023, 1328 UTC
by ~SIGINT~
1 Replies
854 Views
Last post June 04, 2023, 1357 UTC
by ~SIGINT~
8 Replies
3966 Views
Last post April 20, 2023, 0250 UTC
by Pigmeat
3 Replies
1890 Views
Last post March 28, 2023, 1301 UTC
by ~SIGINT~
0 Replies
665 Views
Last post December 20, 2022, 2207 UTC
by ~SIGINT~
0 Replies
667 Views
Last post December 13, 2022, 2154 UTC
by ~SIGINT~
1 Replies
858 Views
Last post December 08, 2022, 1645 UTC
by sat_dxer
2 Replies
856 Views
Last post December 02, 2022, 1236 UTC
by UtilitySeattle
1 Replies
984 Views
Last post October 13, 2022, 1959 UTC
by fpeconsultant
1 Replies
1069 Views
Last post October 13, 2022, 0138 UTC
by Elf36
0 Replies
915 Views
Last post September 10, 2022, 1501 UTC
by ~SIGINT~

 

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