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
12 Replies
1387 Views
Last post January 20, 2023, 2141 UTC
by dxwingr
2 Replies
416 Views
Last post January 13, 2025, 0052 UTC
by Chuck54
3 Replies
1011 Views
Last post July 13, 2019, 1318 UTC
by ChrisSmolinski
1 Replies
628 Views
Last post June 27, 2021, 1009 UTC
by Skipmuck
2 Replies
593 Views
Last post August 25, 2024, 1220 UTC
by N2MLP
2 Replies
524 Views
Last post May 18, 2023, 2012 UTC
by N2MLP
7 Replies
1137 Views
Last post December 29, 2023, 0030 UTC
by ChrisLobdell
3 Replies
1290 Views
Last post December 25, 2015, 0136 UTC
by slowtrain
18 Replies
2061 Views
Last post November 26, 2024, 2005 UTC
by Tony_Pavick
12 Replies
824 Views
Last post January 25, 2025, 0304 UTC
by Crater Eddie
4 Replies
1572 Views
Last post October 08, 2018, 1647 UTC
by DimBulb
1 Replies
861 Views
Last post December 07, 2020, 0305 UTC
by scham
5 Replies
1076 Views
Last post May 29, 2021, 0418 UTC
by kandi
2 Replies
516 Views
Last post September 07, 2024, 1942 UTC
by N2MLP
1 Replies
515 Views
Last post January 12, 2024, 1812 UTC
by Ron Hunsicker
3 Replies
540 Views
Last post May 03, 2025, 1303 UTC
by N2MLP
2 Replies
1178 Views
Last post November 03, 2012, 1350 UTC
by ChrisSmolinski
4 Replies
776 Views
Last post July 30, 2024, 2110 UTC
by N2MLP
9 Replies
869 Views
Last post December 05, 2024, 0354 UTC
by dxace1
3 Replies
334 Views
Last post January 01, 2025, 0230 UTC
by Crater Eddie

 

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