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
2 Replies
1547 Views
Last post February 16, 2014, 0523 UTC
by radioguy73
15 Replies
1547 Views
Last post July 24, 2022, 0246 UTC
by Pigmeat
11 Replies
1547 Views
Last post January 22, 2022, 0223 UTC
by ~SIGINT~
6 Replies
1547 Views
Last post March 18, 2018, 2241 UTC
by Ray Lalleu
6 Replies
1548 Views
Last post June 30, 2019, 0034 UTC
by refmo
4 Replies
1548 Views
Last post August 03, 2014, 1740 UTC
by ChrisSmolinski
4 Replies
1548 Views
Last post May 17, 2017, 1629 UTC
by CoolAM Radio
6 Replies
1548 Views
Last post January 18, 2018, 0255 UTC
by JohnS
10 Replies
1548 Views
Last post April 30, 2018, 1200 UTC
by ChrisSmolinski
10 Replies
1548 Views
Last post April 28, 2018, 0048 UTC
by Dr. Strangelove
5 Replies
1548 Views
Last post June 26, 2017, 2350 UTC
by Helicaster
0 Replies
1548 Views
Last post January 18, 2009, 2034 UTC
by ChrisSmolinski
4 Replies
1549 Views
Last post July 16, 2014, 1148 UTC
by ChrisSmolinski
1 Replies
1549 Views
Last post November 24, 2013, 2136 UTC
by ChrisSmolinski
0 Replies
1549 Views
Last post November 16, 2013, 2136 UTC
by ChrisSmolinski
4 Replies
1549 Views
Last post February 24, 2013, 1438 UTC
by ChrisSmolinski
5 Replies
1549 Views
Last post November 28, 2015, 1922 UTC
by Andrew Yoder
4 Replies
1549 Views
Last post October 07, 2012, 1439 UTC
by ChrisSmolinski
5 Replies
1549 Views
Last post March 05, 2016, 0058 UTC
by Labviewguru
3 Replies
1549 Views
Last post September 10, 2011, 0155 UTC
by DavidB

 

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