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
3621 Views
Last post March 27, 2019, 1146 UTC
by ChrisSmolinski
0 Replies
2601 Views
Last post September 27, 2024, 1752 UTC
by KVKHFF (Andy)
5 Replies
3391 Views
Last post October 03, 2019, 2132 UTC
by Josh
0 Replies
2353 Views
Last post November 22, 2017, 0949 UTC
by l0ngwire
3 Replies
4297 Views
Last post February 09, 2019, 1850 UTC
by Ct Yankee
1 Replies
3696 Views
Last post January 22, 2019, 0738 UTC
by CoolAM Radio
2 Replies
2143 Views
Last post September 16, 2023, 1312 UTC
by TRI International
2 Replies
2464 Views
Last post November 23, 2019, 1715 UTC
by Edgar Souse
2 Replies
2927 Views
Last post August 15, 2018, 2248 UTC
by Matt_B
1 Replies
2473 Views
Last post November 16, 2017, 1516 UTC
by MDK2
0 Replies
2181 Views
Last post September 16, 2024, 1916 UTC
by KVKHFF (Andy)
1 Replies
5313 Views
Last post March 05, 2025, 1539 UTC
by Sealord
0 Replies
3016 Views
Last post August 25, 2024, 2011 UTC
by Matt_B
1 Replies
2105 Views
Last post September 19, 2022, 2204 UTC
by Shortwave_Listener
1 Replies
2863 Views
Last post November 19, 2024, 0449 UTC
by autovon
1 Replies
2271 Views
Last post June 03, 2022, 0509 UTC
by Shortwave_Listener
2 Replies
3351 Views
Last post November 19, 2017, 0803 UTC
by Looking-Glass
1 Replies
2784 Views
Last post July 04, 2018, 1446 UTC
by Traveling Wave
1 Replies
2622 Views
Last post November 19, 2017, 0801 UTC
by Looking-Glass
7 Replies
3567 Views
Last post February 20, 2020, 2038 UTC
by Magnumfan

 

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