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
988 Views
Last post November 16, 2014, 1754 UTC
by ChrisSmolinski
9 Replies
1971 Views
Last post October 09, 2015, 2322 UTC
by jFarley
0 Replies
440 Views
Last post June 09, 2020, 1255 UTC
by ChrisSmolinski
0 Replies
726 Views
Last post May 19, 2019, 2215 UTC
by ChrisSmolinski
8 Replies
1426 Views
Last post December 18, 2021, 2254 UTC
by ~SIGINT~
0 Replies
2484 Views
Last post May 03, 2008, 2102 UTC
by ChrisSmolinski
0 Replies
765 Views
Last post May 31, 2015, 1436 UTC
by ChrisSmolinski
0 Replies
407 Views
Last post April 04, 2025, 1153 UTC
by ChrisSmolinski
2 Replies
1049 Views
Last post December 27, 2014, 2329 UTC
by ByteBORG
8 Replies
2146 Views
Last post January 29, 2014, 0019 UTC
by S. McArdle
1 Replies
696 Views
Last post April 01, 2017, 2003 UTC
by ChrisSmolinski
10 Replies
1195 Views
Last post January 29, 2022, 2100 UTC
by Big Badfish Al
0 Replies
1758 Views
Last post October 19, 2008, 1421 UTC
by ChrisSmolinski
1 Replies
1095 Views
Last post December 04, 2010, 1530 UTC
by Zane
1 Replies
1203 Views
Last post October 24, 2013, 2014 UTC
by jFarley
1 Replies
709 Views
Last post September 02, 2018, 1218 UTC
by Skipmuck
3 Replies
972 Views
Last post November 26, 2017, 0049 UTC
by PirateSWL
1 Replies
547 Views
Last post June 29, 2019, 2048 UTC
by PirateSWL
4 Replies
1272 Views
Last post January 12, 2024, 2049 UTC
by ~SIGINT~
0 Replies
878 Views
Last post July 25, 2015, 1510 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