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
1085 Views
Last post June 14, 2017, 0212 UTC
by R4002
2 Replies
1081 Views
Last post October 24, 2020, 2325 UTC
by bubba
11M conditions

Started by Elf36

4 Replies
1080 Views
Last post October 11, 2021, 1339 UTC
by ChrisSmolinski
0 Replies
1074 Views
Last post November 04, 2015, 1432 UTC
by R4002
0 Replies
1072 Views
Last post November 15, 2015, 1545 UTC
by prldx
0 Replies
1071 Views
Last post November 05, 2015, 1710 UTC
by prldx
0 Replies
1071 Views
Last post July 11, 2017, 2121 UTC
by R4002
3 Replies
1070 Views
Last post June 03, 2020, 2006 UTC
by Kage
7 Replies
1067 Views
Last post October 18, 2021, 2150 UTC
by Elf36
0 Replies
1065 Views
Last post May 30, 2017, 1825 UTC
by R4002
1 Replies
1064 Views
Last post October 21, 2015, 1643 UTC
by R4002
0 Replies
1064 Views
Last post June 25, 2017, 2026 UTC
by R4002
0 Replies
1063 Views
Last post June 22, 2017, 1853 UTC
by R4002
0 Replies
1063 Views
Last post July 20, 2017, 1739 UTC
by R4002
0 Replies
1061 Views
Last post November 13, 2015, 1723 UTC
by prldx
0 Replies
1060 Views
Last post October 23, 2017, 2007 UTC
by skeezix
0 Replies
1059 Views
Last post January 02, 2016, 0657 UTC
by RobRich
0 Replies
1051 Views
Last post November 09, 2015, 1436 UTC
by ChrisSmolinski
1 Replies
1046 Views
Last post October 18, 2015, 2025 UTC
by ChrisSmolinski
3 Replies
1037 Views
Last post February 18, 2020, 1834 UTC
by ChrisSmolinski

 

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