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
373 Views
Last post March 18, 2023, 1602 UTC
by Ct Yankee
0 Replies
731 Views
Last post June 14, 2017, 1732 UTC
by Ct Yankee
0 Replies
490 Views
Last post March 06, 2021, 1918 UTC
by Ct Yankee
2 Replies
1154 Views
Last post October 28, 2017, 2155 UTC
by MDK2
1 Replies
891 Views
Last post October 16, 2016, 2206 UTC
by MDK2
0 Replies
542 Views
Last post June 09, 2020, 2007 UTC
by Ct Yankee
0 Replies
308 Views
Last post December 21, 2022, 1848 UTC
by Ct Yankee
6 Replies
1306 Views
Last post April 27, 2019, 1311 UTC
by Ct Yankee
0 Replies
576 Views
Last post June 10, 2018, 0039 UTC
by Ct Yankee
0 Replies
310 Views
Last post April 06, 2023, 1458 UTC
by Ct Yankee
2 Replies
909 Views
Last post July 16, 2016, 0100 UTC
by Ct Yankee
0 Replies
680 Views
Last post July 16, 2016, 0057 UTC
by Ct Yankee
1 Replies
598 Views
Last post March 29, 2021, 2103 UTC
by MDK2
0 Replies
529 Views
Last post January 30, 2020, 1209 UTC
by Ct Yankee
3 Replies
1042 Views
Last post July 19, 2020, 0212 UTC
by East Troy Don
0 Replies
652 Views
Last post February 27, 2018, 2314 UTC
by Ct Yankee
0 Replies
726 Views
Last post March 15, 2017, 2018 UTC
by Ct Yankee
0 Replies
970 Views
Last post May 10, 2016, 0935 UTC
by Ct Yankee
1 Replies
363 Views
Last post July 02, 2025, 1900 UTC
by East Troy Don
0 Replies
682 Views
Last post August 05, 2017, 1816 UTC
by Ct Yankee

 

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