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
0 Replies
503 Views
Last post June 16, 2022, 2323 UTC
by Cross the Rubicon
1 Replies
614 Views
Last post July 04, 2022, 0438 UTC
by Pigmeat
3 Replies
825 Views
Last post June 17, 2022, 2341 UTC
by MDK2
0 Replies
513 Views
Last post June 14, 2022, 1031 UTC
by Cross the Rubicon
0 Replies
916 Views
Last post March 19, 2017, 2023 UTC
by Ct Yankee
0 Replies
662 Views
Last post May 18, 2019, 1941 UTC
by Ct Yankee
1 Replies
1374 Views
Last post May 14, 2016, 1650 UTC
by Chanter
0 Replies
623 Views
Last post May 03, 2021, 1241 UTC
by Ct Yankee
0 Replies
677 Views
Last post November 18, 2017, 1431 UTC
by Ct Yankee
0 Replies
542 Views
Last post October 17, 2022, 1216 UTC
by Ct Yankee
1 Replies
688 Views
Last post March 24, 2018, 1329 UTC
by refmo
0 Replies
795 Views
Last post April 02, 2017, 1849 UTC
by Ct Yankee
1 Replies
846 Views
Last post June 01, 2019, 2134 UTC
by MDK2
0 Replies
550 Views
Last post December 20, 2020, 1101 UTC
by Ct Yankee
0 Replies
694 Views
Last post October 28, 2019, 0835 UTC
by Ct Yankee
0 Replies
737 Views
Last post September 03, 2017, 1932 UTC
by Ct Yankee
9 Replies
2425 Views
Last post November 03, 2018, 1513 UTC
by Ct Yankee
1 Replies
709 Views
Last post May 27, 2021, 1619 UTC
by MDK2
1 Replies
1652 Views
Last post March 30, 2025, 0405 UTC
by MDK2
1 Replies
738 Views
Last post June 16, 2019, 1800 UTC
by Matt285

 

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