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
3 Replies
1429 Views
Last post February 24, 2012, 0341 UTC
by Jolly Roger
6 Replies
1866 Views
Last post November 18, 2012, 1749 UTC
by Sealord
4 Replies
1329 Views
Last post October 03, 2013, 1323 UTC
by ChrisSmolinski
2 Replies
1234 Views
Last post October 03, 2013, 1331 UTC
by ChrisSmolinski
2 Replies
1464 Views
Last post March 30, 2012, 0119 UTC
by Andrew Yoder
4 Replies
1643 Views
Last post March 04, 2013, 1518 UTC
by ChrisSmolinski
8 Replies
2921 Views
Last post April 14, 2012, 1429 UTC
by ChrisSmolinski
0 Replies
901 Views
Last post March 03, 2013, 2351 UTC
by SingleSideburn
1 Replies
1225 Views
Last post February 21, 2012, 1931 UTC
by Sealord
0 Replies
1014 Views
Last post August 05, 2012, 0451 UTC
by SingleSideburn
15 Replies
1721 Views
Last post October 28, 2022, 1024 UTC
by ChrisSmolinski
13 Replies
1235 Views
Last post October 17, 2022, 0143 UTC
by Pigmeat
23 Replies
2487 Views
Last post November 19, 2022, 1254 UTC
by skyman
0 Replies
364 Views
Last post August 06, 2022, 0045 UTC
by Signal Hunter
3 Replies
1543 Views
Last post June 02, 2014, 1238 UTC
by Sealord
2 Replies
460 Views
Last post April 07, 2023, 0324 UTC
by Shortwave_Listener
0 Replies
440 Views
Last post May 12, 2024, 0615 UTC
by Shortwave_Listener
4 Replies
646 Views
Last post February 15, 2025, 1837 UTC
by N2MLP
5 Replies
575 Views
Last post March 02, 2024, 0251 UTC
by Sparkyzilla85
7 Replies
940 Views
Last post February 15, 2023, 0416 UTC
by osiris

 

Normal Topic
Hot Topic (More than 15 replies)
Very Hot Topic (More than 25 replies)

Locked Topic
Sticky Topic
Poll


HFUnderground T-Shirt
HFUnderground House Flag
by MitchellTimeDesigns