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
10 Replies
3336 Views
Last post March 29, 2014, 1340 UTC
by ChrisLobdell
1 Replies
1461 Views
Last post August 16, 2013, 2109 UTC
by ChrisSmolinski
3 Replies
1754 Views
Last post July 28, 2013, 2233 UTC
by Pigmeat
3 Replies
1875 Views
Last post May 07, 2013, 2249 UTC
by ChrisLobdell
7 Replies
4506 Views
Last post January 04, 2014, 1327 UTC
by ChrisLobdell
0 Replies
1204 Views
Last post March 17, 2018, 2248 UTC
by ChrisLobdell
5 Replies
2125 Views
Last post December 03, 2013, 0626 UTC
by redhat
12 Replies
4267 Views
Last post June 11, 2013, 0206 UTC
by ff
Bacon

Started by ChrisLobdell

3 Replies
1668 Views
Last post August 31, 2013, 2257 UTC
by thechoat
11 Replies
4527 Views
Last post February 11, 2013, 2353 UTC
by Frank5000
0 Replies
1180 Views
Last post June 29, 2013, 1745 UTC
by ChrisLobdell
0 Replies
1203 Views
Last post June 29, 2013, 1751 UTC
by ChrisLobdell
0 Replies
493 Views
Last post October 10, 2025, 2118 UTC
by ChrisSmolinski
1 Replies
2510 Views
Last post June 25, 2012, 2139 UTC
by Ragnar
1 Replies
961 Views
Last post May 06, 2014, 1150 UTC
by BoomboxDX
5 Replies
2768 Views
Last post April 05, 2013, 0858 UTC
by Pigmeat
2 Replies
1407 Views
Last post March 21, 2014, 1514 UTC
by ChrisSmolinski
0 Replies
825 Views
Last post March 29, 2019, 2129 UTC
by ChrisSmolinski
3 Replies
3454 Views
Last post February 06, 2009, 0159 UTC
by mr. mike
0 Replies
962 Views
Last post February 16, 2018, 1211 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 Garden Flag
by MitchellTimeDesigns