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.

Pages: 1 2 3 [4] 5 6 7
Subject / Started by Last post
1 Replies
1021 Views 		Last post September 10, 2025, 2042 UTC
by nitroengine
1 Replies
2361 Views 		Last post June 03, 2022, 0509 UTC
by Shortwave_Listener
1 Replies
1643 Views 		Last post August 22, 2023, 1329 UTC
by uhf35
1 Replies
3332 Views 		Last post December 10, 2016, 1022 UTC
by Daniel Wyllyans
1 Replies
3841 Views 		Last post December 07, 2016, 1120 UTC
by Daniel Wyllyans
1 Replies
7852 Views 		Last post June 09, 2025, 1007 UTC
by Jos
1 Replies
3979 Views 		Last post November 19, 2024, 0449 UTC
by autovon
1 Replies
2571 Views 		Last post November 16, 2017, 1516 UTC
by MDK2
1 Replies
2713 Views 		Last post November 19, 2017, 0801 UTC
by Looking-Glass
1 Replies
4146 Views 		Last post September 24, 2024, 2027 UTC
by Whonose123
1 Replies
2193 Views 		Last post September 19, 2022, 2204 UTC
by Shortwave_Listener
1 Replies
2865 Views 		Last post July 04, 2018, 1446 UTC
by Traveling Wave
1 Replies
2851 Views 		Last post May 09, 2018, 1421 UTC
by MDK2
1 Replies
2550 Views 		Last post May 04, 2018, 0057 UTC
by refmo
1 Replies
2965 Views 		Last post April 14, 2018, 1210 UTC
by ulx2
1 Replies
3914 Views 		Last post May 12, 2024, 0839 UTC
by prldx
1 Replies
2862 Views 		Last post December 02, 2017, 1726 UTC
by ChrisSmolinski
1 Replies
4482 Views 		Last post November 24, 2016, 2149 UTC
by linkz
2 Replies
1798 Views 		Last post November 22, 2023, 1915 UTC
by KVKHFF (Andy)
2 Replies
2961 Views 		Last post November 17, 2017, 0454 UTC
by Matt_B
Pages: 1 2 3 [4] 5 6 7

 

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