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
5 Replies
4970 Views
Last post April 28, 2023, 0850 UTC
by Mathew
8 Replies
9843 Views
Last post December 26, 2023, 1849 UTC
by Daniel Wyllyans
2 Replies
755 Views
Last post January 19, 2023, 0028 UTC
by Shortwave_Listener
0 Replies
679 Views
Last post November 07, 2023, 2254 UTC
by TRI International
0 Replies
966 Views
Last post March 20, 2022, 1916 UTC
by cgalazt
2 Replies
1649 Views
Last post March 01, 2018, 1434 UTC
by ChrisSmolinski
0 Replies
1397 Views
Last post March 26, 2018, 1624 UTC
by Daniel Wyllyans
0 Replies
1297 Views
Last post September 27, 2018, 1634 UTC
by Daniel Wyllyans
0 Replies
1188 Views
Last post August 13, 2018, 1054 UTC
by Daniel Wyllyans
0 Replies
872 Views
Last post March 27, 2022, 2058 UTC
by cgalazt
0 Replies
806 Views
Last post November 07, 2022, 1009 UTC
by TRI International
1 Replies
972 Views
Last post May 15, 2022, 0038 UTC
by Ray Lalleu
0 Replies
536 Views
Last post August 28, 2023, 0939 UTC
by TRI International
0 Replies
536 Views
Last post August 26, 2023, 0951 UTC
by TRI International
0 Replies
500 Views
Last post August 26, 2023, 0939 UTC
by TRI International
0 Replies
1203 Views
Last post September 06, 2023, 1006 UTC
by TRI International
2 Replies
644 Views
Last post September 04, 2023, 2357 UTC
by TRI International
1 Replies
597 Views
Last post August 24, 2023, 1629 UTC
by Shortwave_Listener
0 Replies
1329 Views
Last post September 26, 2023, 0856 UTC
by TRI International
0 Replies
1160 Views
Last post September 06, 2023, 0954 UTC
by TRI International

 

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