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
2680 Views
Last post October 16, 2013, 2239 UTC
by jFarley
16 Replies
8482 Views
Last post December 26, 2013, 0856 UTC
by Gino Italy
9 Replies
2750 Views
Last post October 18, 2013, 1444 UTC
by ChrisSmolinski
12 Replies
4085 Views
Last post February 16, 2024, 1220 UTC
by ChrisSmolinski
9 Replies
1077 Views
Last post February 22, 2024, 1312 UTC
by ChrisSmolinski
4 Replies
672 Views
Last post December 22, 2023, 1241 UTC
by Sealord
7 Replies
739 Views
Last post December 23, 2023, 1346 UTC
by TRI International
12 Replies
1542 Views
Last post December 23, 2023, 2130 UTC
by Andrew Yoder
6 Replies
674 Views
Last post December 24, 2023, 2343 UTC
by myteaquinn
4 Replies
1629 Views
Last post March 19, 2013, 2335 UTC
by jFarley
13 Replies
3372 Views
Last post October 19, 2013, 0221 UTC
by Bowman1
0 Replies
859 Views
Last post December 03, 2012, 1306 UTC
by ChrisSmolinski
3 Replies
1182 Views
Last post October 12, 2013, 2230 UTC
by DeltaCharlie
13 Replies
3199 Views
Last post December 22, 2014, 0002 UTC
by oly1959
8 Replies
2196 Views
Last post April 09, 2014, 1213 UTC
by ChrisSmolinski
3 Replies
1523 Views
Last post December 22, 2013, 1601 UTC
by aurora
1 Replies
867 Views
Last post December 22, 2012, 1445 UTC
by Zane
2 Replies
1122 Views
Last post December 22, 2012, 2048 UTC
by Hornet0123
5 Replies
1644 Views
Last post March 13, 2013, 1216 UTC
by ChrisSmolinski
5 Replies
1659 Views
Last post October 29, 2012, 1740 UTC
by RJ

 

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