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
1325 Views
Last post December 17, 2023, 2037 UTC
by ChrisSmolinski
5 Replies
1771 Views
Last post January 29, 2024, 1226 UTC
by ChrisSmolinski
4 Replies
1422 Views
Last post December 16, 2023, 0229 UTC
by Saul
3 Replies
1589 Views
Last post July 22, 2025, 1501 UTC
by NQC
4 Replies
1176 Views
Last post May 02, 2023, 0832 UTC
by Pigmeat
0 Replies
758 Views
Last post May 07, 2023, 1223 UTC
by ChrisSmolinski
3 Replies
1008 Views
Last post August 17, 2023, 1447 UTC
by ChrisSmolinski
1 Replies
866 Views
Last post May 31, 2023, 2035 UTC
by TRI International
1 Replies
980 Views
Last post April 18, 2023, 0918 UTC
by TRI International
1 Replies
963 Views
Last post April 19, 2023, 0847 UTC
by TRI International
1 Replies
809 Views
Last post May 15, 2023, 1129 UTC
by ChrisSmolinski
2 Replies
1016 Views
Last post October 14, 2023, 2234 UTC
by ChrisSmolinski
0 Replies
1105 Views
Last post April 24, 2023, 0236 UTC
by Pigmeat
4 Replies
1152 Views
Last post April 23, 2023, 0946 UTC
by TRI International
0 Replies
1260 Views
Last post June 15, 2025, 1719 UTC
by ChrisSmolinski
3 Replies
1062 Views
Last post May 28, 2023, 0923 UTC
by TRI International
0 Replies
202 Views
Last post August 03, 2025, 0924 UTC
by TRI International
1 Replies
899 Views
Last post June 22, 2023, 2251 UTC
by ChrisSmolinski
0 Replies
902 Views
Last post October 13, 2023, 2304 UTC
by TRI International
1 Replies
1003 Views
Last post September 05, 2023, 1146 UTC
by ChrisSmolinski

 

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

Locked Topic
Sticky Topic
Poll


HFUnderground Mug
HFUnderground Mug
by MitchellTimeDesigns