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
763 Views
Last post October 17, 2015, 1226 UTC
by ChrisSmolinski
11 Replies
2522 Views
Last post December 26, 2012, 2147 UTC
by jFarley
11 Replies
3567 Views
Last post May 14, 2016, 0110 UTC
by myteaquinn
5 Replies
887 Views
Last post January 13, 2023, 2042 UTC
by Sky Waves
3 Replies
1464 Views
Last post April 11, 2013, 1151 UTC
by Clarke
0 Replies
1048 Views
Last post December 29, 2013, 1355 UTC
by ChrisSmolinski
0 Replies
909 Views
Last post January 04, 2016, 1444 UTC
by ChrisSmolinski
6 Replies
904 Views
Last post September 10, 2022, 2315 UTC
by myteaquinn
4 Replies
1007 Views
Last post February 03, 2021, 2006 UTC
by TRI International
2 Replies
1085 Views
Last post April 01, 2016, 1201 UTC
by jFarley
0 Replies
127 Views
Last post November 12, 2025, 1214 UTC
by ChrisSmolinski
1 Replies
1096 Views
Last post January 16, 2017, 2348 UTC
by PirateSWL
1 Replies
1552 Views
Last post October 27, 2009, 1304 UTC
by ChrisSmolinski
1 Replies
1185 Views
Last post February 28, 2015, 2358 UTC
by jFarley
4 Replies
748 Views
Last post October 19, 2024, 2118 UTC
by N2MLP
5 Replies
1253 Views
Last post April 17, 2020, 1935 UTC
by hsmith77
0 Replies
769 Views
Last post July 26, 2015, 1619 UTC
by ChrisSmolinski
5 Replies
1360 Views
Last post December 19, 2020, 2149 UTC
by Davep
17 Replies
2588 Views
Last post July 02, 2019, 0007 UTC
by slowtrain
0 Replies
536 Views
Last post November 30, 2017, 2127 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 T-Shirt
by MitchellTimeDesigns