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
8 Replies
2040 Views
Last post December 28, 2015, 2115 UTC
by R4002
0 Replies
940 Views
Last post March 21, 2015, 1456 UTC
by ChrisSmolinski
4 Replies
1183 Views
Last post October 29, 2017, 1339 UTC
by PirateSWL
0 Replies
504 Views
Last post November 27, 2021, 1319 UTC
by Skipmuck
5 Replies
2218 Views
Last post January 19, 2016, 1639 UTC
by flexoman61
0 Replies
585 Views
Last post May 19, 2018, 1331 UTC
by ChrisSmolinski
0 Replies
524 Views
Last post December 22, 2020, 1320 UTC
by ChrisSmolinski
6 Replies
1768 Views
Last post December 31, 2015, 1717 UTC
by Pigmeat
1 Replies
1115 Views
Last post December 09, 2015, 1327 UTC
by ChrisSmolinski
0 Replies
936 Views
Last post May 19, 2012, 1558 UTC
by ChrisSmolinski
0 Replies
1401 Views
Last post August 29, 2009, 1355 UTC
by ChrisSmolinski
1 Replies
424 Views
Last post April 20, 2025, 1721 UTC
by N2MLP
6 Replies
2314 Views
Last post January 13, 2016, 1750 UTC
by R4002
0 Replies
884 Views
Last post March 25, 2012, 1335 UTC
by ChrisSmolinski
0 Replies
883 Views
Last post May 25, 2014, 1330 UTC
by ChrisSmolinski
1 Replies
621 Views
Last post May 27, 2023, 1409 UTC
by ChrisSmolinski
0 Replies
599 Views
Last post December 26, 2021, 1336 UTC
by ChrisSmolinski
0 Replies
946 Views
Last post May 28, 2017, 1336 UTC
by ChrisSmolinski
3 Replies
1526 Views
Last post August 31, 2019, 1346 UTC
by ChrisSmolinski
6 Replies
1394 Views
Last post January 01, 2022, 1424 UTC
by Ron Hunsicker

 

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