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
7 Replies
5990 Views
Last post March 05, 2012, 1857 UTC
by zackers
3 Replies
2042 Views
Last post February 23, 2017, 1259 UTC
by kf7ely
2 Replies
1968 Views
Last post September 23, 2017, 1826 UTC
by MDK2
0 Replies
828 Views
Last post December 27, 2022, 1119 UTC
by TRI International
1 Replies
1172 Views
Last post November 18, 2013, 2323 UTC
by rdla4
0 Replies
725 Views
Last post February 26, 2023, 1447 UTC
by ChrisSmolinski
0 Replies
1259 Views
Last post September 17, 2013, 2045 UTC
by jFarley
4 Replies
2468 Views
Last post January 03, 2019, 1758 UTC
by Matt_B
0 Replies
863 Views
Last post April 19, 2021, 2220 UTC
by kris
3 Replies
2561 Views
Last post December 05, 2012, 0138 UTC
by jFarley
0 Replies
2043 Views
Last post January 01, 2013, 2012 UTC
by ChrisSmolinski
0 Replies
1329 Views
Last post December 31, 2018, 1729 UTC
by NSPcom
0 Replies
1322 Views
Last post December 13, 2016, 2213 UTC
by weaksigs
0 Replies
1174 Views
Last post March 28, 2019, 1526 UTC
by MDK2
1 Replies
2294 Views
Last post February 09, 2025, 0834 UTC
by tiNG
3 Replies
2365 Views
Last post January 25, 2014, 2013 UTC
by ChrisSmolinski
0 Replies
1179 Views
Last post October 21, 2013, 2356 UTC
by rdla4
1 Replies
2187 Views
Last post December 09, 2012, 1647 UTC
by jFarley
2 Replies
1172 Views
Last post March 13, 2022, 0959 UTC
by Rurik
0 Replies
1321 Views
Last post March 25, 2013, 2316 UTC
by rdla4

 

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