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
18 Replies
4591 Views
Last post February 08, 2015, 1405 UTC
by Pigmeat
19 Replies
4950 Views
Last post May 27, 2015, 1340 UTC
by Pigmeat
11 Replies
3299 Views
Last post June 01, 2015, 1059 UTC
by rundangerously
5 Replies
1839 Views
Last post November 05, 2017, 1500 UTC
by ChrisSmolinski
7 Replies
1629 Views
Last post November 26, 2017, 0018 UTC
by William Hassig
20 Replies
5828 Views
Last post March 30, 2014, 0859 UTC
by Humat
11 Replies
2721 Views
Last post April 15, 2017, 0043 UTC
by Traveling Wave
11 Replies
4061 Views
Last post July 05, 2015, 1512 UTC
by Pigmeat
4 Replies
1252 Views
Last post December 25, 2012, 1134 UTC
by Hornet0123
5 Replies
1345 Views
Last post June 24, 2012, 0125 UTC
by Kilokat7
4 Replies
1520 Views
Last post September 05, 2011, 0118 UTC
by Sealord
Radio Appalachia 6935a

Started by Fansome

0 Replies
905 Views
Last post January 30, 2011, 0148 UTC
by Fansome
4 Replies
1482 Views
Last post September 23, 2012, 0122 UTC
by ChrisSmolinski
8 Replies
2283 Views
Last post December 07, 2013, 0101 UTC
by n0qlt
8 Replies
3082 Views
Last post December 01, 2013, 0210 UTC
by Rafman
6 Replies
1861 Views
Last post January 01, 2015, 0155 UTC
by blw
0 Replies
984 Views
Last post December 31, 2014, 0127 UTC
by Evil Elvis
9 Replies
651 Views
Last post May 10, 2025, 0055 UTC
by hflstnr
14 Replies
2951 Views
Last post May 04, 2025, 0420 UTC
by Pigmeat
12 Replies
886 Views
Last post April 13, 2025, 1549 UTC
by N2MLP

 

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