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
648 Views
Last post May 27, 2019, 1223 UTC
by ChrisSmolinski
10 Replies
1438 Views
Last post September 05, 2021, 1401 UTC
by Rob.
2 Replies
1135 Views
Last post June 08, 2013, 1443 UTC
by ChrisLobdell
0 Replies
726 Views
Last post February 02, 2016, 1433 UTC
by ChrisSmolinski
1 Replies
477 Views
Last post April 10, 2025, 1238 UTC
by ChrisLobdell
1 Replies
1041 Views
Last post November 20, 2015, 0007 UTC
by JoeFLIPS
0 Replies
590 Views
Last post September 11, 2018, 2013 UTC
by ChrisSmolinski
0 Replies
711 Views
Last post February 04, 2013, 1310 UTC
by ChrisSmolinski
3 Replies
1046 Views
Last post December 03, 2017, 1651 UTC
by Andrew Yoder
8 Replies
1094 Views
Last post November 20, 2022, 1605 UTC
by KMD3HR
1 Replies
1090 Views
Last post August 02, 2015, 1206 UTC
by hsmith77
0 Replies
725 Views
Last post August 22, 2017, 1847 UTC
by ChrisSmolinski
11 Replies
5654 Views
Last post March 29, 2014, 0124 UTC
by philcobill
0 Replies
984 Views
Last post August 29, 2016, 2114 UTC
by ChrisSmolinski
3 Replies
1080 Views
Last post February 26, 2019, 2249 UTC
by Andrew Yoder
0 Replies
458 Views
Last post October 31, 2023, 1412 UTC
by ChrisSmolinski
0 Replies
869 Views
Last post May 19, 2012, 1558 UTC
by ChrisSmolinski
9 Replies
2056 Views
Last post November 03, 2018, 2226 UTC
by slowtrain
7 Replies
1703 Views
Last post November 16, 2024, 1743 UTC
by N2MLP
0 Replies
1060 Views
Last post January 08, 2012, 1859 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 T-Shirt
by MitchellTimeDesigns