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
1 Replies
805 Views
Last post December 01, 2015, 0108 UTC
by ChrisSmolinski
1 Replies
823 Views
Last post January 13, 2014, 1307 UTC
by ChrisSmolinski
0 Replies
242 Views
Last post October 14, 2022, 0912 UTC
by ChrisSmolinski
1 Replies
364 Views
Last post February 26, 2024, 1221 UTC
by ChrisSmolinski
5 Replies
1037 Views
Last post November 07, 2015, 0126 UTC
by hsmith77
5 Replies
613 Views
Last post November 12, 2023, 0228 UTC
by Molvania Poacher
4 Replies
990 Views
Last post May 22, 2018, 1318 UTC
by ChrisSmolinski
0 Replies
216 Views
Last post December 17, 2023, 1420 UTC
by ChrisSmolinski
0 Replies
674 Views
Last post October 17, 2015, 1444 UTC
by ChrisSmolinski
0 Replies
375 Views
Last post August 28, 2021, 1621 UTC
by ChrisSmolinski
0 Replies
461 Views
Last post May 21, 2021, 0220 UTC
by Paul Turkk
0 Replies
271 Views
Last post November 05, 2023, 1342 UTC
by ChrisSmolinski
0 Replies
545 Views
Last post February 25, 2017, 1427 UTC
by ChrisSmolinski
2 Replies
566 Views
Last post June 19, 2020, 1946 UTC
by ChrisSmolinski
4 Replies
2175 Views
Last post July 03, 2017, 1413 UTC
by ChrisSmolinski
6 Replies
1174 Views
Last post June 03, 2018, 0256 UTC
by digitalmod
4 Replies
793 Views
Last post July 31, 2021, 0255 UTC
by myteaquinn
3 Replies
485 Views
Last post November 13, 2022, 0323 UTC
by Pigmeat
2 Replies
529 Views
Last post November 11, 2023, 0439 UTC
by myteaquinn
2 Replies
444 Views
Last post May 04, 2024, 1654 UTC
by Shortwave_Listener

 

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