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
865 Views
Last post September 21, 2018, 1743 UTC
by MDK2
1 Replies
877 Views
Last post September 21, 2018, 0921 UTC
by ChrisSmolinski
1 Replies
1041 Views
Last post September 15, 2018, 1822 UTC
by Josh
1 Replies
1276 Views
Last post September 14, 2018, 1646 UTC
by Treehouse SWL
1 Replies
674 Views
Last post August 25, 2018, 1613 UTC
by MDK2
1 Replies
386 Views
Last post February 24, 2023, 1403 UTC
by Pigmeat
1 Replies
772 Views
Last post March 19, 2023, 1558 UTC
by East Troy Don
1 Replies
388 Views
Last post February 15, 2023, 1332 UTC
by East Troy Don
1 Replies
966 Views
Last post November 07, 2016, 2125 UTC
by Daniel Wyllyans
1 Replies
369 Views
Last post February 12, 2023, 1916 UTC
by East Troy Don
1 Replies
481 Views
Last post February 02, 2023, 1913 UTC
by Alternative3d
1 Replies
344 Views
Last post January 30, 2023, 0020 UTC
by Pigmeat
1 Replies
368 Views
Last post January 30, 2023, 0022 UTC
by Pigmeat
1 Replies
1158 Views
Last post November 02, 2016, 1712 UTC
by sat_dxer
1 Replies
518 Views
Last post January 25, 2023, 1406 UTC
by Ct Yankee
1 Replies
347 Views
Last post January 23, 2023, 2213 UTC
by ~SIGINT~
1 Replies
477 Views
Last post February 13, 2023, 1538 UTC
by Paul B. Walker, Jr.
1 Replies
422 Views
Last post February 21, 2023, 1438 UTC
by East Troy Don
1 Replies
593 Views
Last post February 01, 2025, 1444 UTC
by East Troy Don
1 Replies
446 Views
Last post January 23, 2023, 2155 UTC
by East Troy Don

 

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

Locked Topic
Sticky Topic
Poll


HFUnderground T-Shirt
HFUnderground T-Shirt
by MitchellTimeDesigns