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
7 Replies
1404 Views
Last post April 29, 2025, 0143 UTC
by Molvania Poacher
11 Replies
1336 Views
Last post October 12, 2024, 0201 UTC
by boston_strangler
3 Replies
653 Views
Last post June 09, 2024, 0328 UTC
by Skipmuck
13 Replies
1910 Views
Last post May 27, 2025, 0209 UTC
by CaptainMitchell
6 Replies
798 Views
Last post January 01, 2025, 0355 UTC
by dxace1
20 Replies
1706 Views
Last post October 20, 2024, 0108 UTC
by Quasar
7 Replies
1028 Views
Last post July 11, 2024, 1454 UTC
by ChrisSmolinski
12 Replies
1960 Views
Last post June 20, 2025, 0325 UTC
by Markokpik
7 Replies
1202 Views
Last post June 09, 2024, 0426 UTC
by RobRich
12 Replies
877 Views
Last post July 28, 2025, 0209 UTC
by ChrisLobdell
19 Replies
1926 Views
Last post May 05, 2025, 0008 UTC
by world of stevie
20 Replies
1597 Views
Last post October 20, 2024, 0046 UTC
by Dr. Strangelove
1 Replies
621 Views
Last post March 21, 2020, 0249 UTC
by Bali_Frank
5 Replies
552 Views
Last post August 27, 2025, 0223 UTC
by Markokpik
3 Replies
1567 Views
Last post December 26, 2013, 0158 UTC
by Kilokat7
12 Replies
3185 Views
Last post October 28, 2012, 0216 UTC
by redhat
2 Replies
1305 Views
Last post October 14, 2012, 1343 UTC
by ChrisSmolinski
7 Replies
2527 Views
Last post January 05, 2018, 2027 UTC
by ray.wf1b
1 Replies
1087 Views
Last post December 16, 2012, 1631 UTC
by ChrisSmolinski
1 Replies
1028 Views
Last post December 30, 2012, 1531 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