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
340 Views
Last post August 28, 2023, 1256 UTC
by ChrisSmolinski
7 Replies
4192 Views
Last post December 30, 2012, 2204 UTC
by Greyline DXing
3 Replies
975 Views
Last post March 11, 2017, 2338 UTC
by JoeFLIPS
4 Replies
910 Views
Last post January 02, 2022, 2226 UTC
by TRI International
3 Replies
1270 Views
Last post July 22, 2018, 1258 UTC
by ChrisSmolinski
0 Replies
1139 Views
Last post October 15, 2011, 2248 UTC
by ChrisSmolinski
0 Replies
765 Views
Last post July 06, 2014, 1439 UTC
by ChrisSmolinski
5 Replies
1269 Views
Last post November 20, 2016, 1507 UTC
by ByteBORG
0 Replies
555 Views
Last post June 05, 2019, 1450 UTC
by ChrisSmolinski
13 Replies
2774 Views
Last post December 24, 2023, 2130 UTC
by Rich D
5 Replies
1363 Views
Last post February 07, 2016, 0155 UTC
by Yankee Charlie
0 Replies
828 Views
Last post July 20, 2017, 1109 UTC
by ChrisSmolinski
2 Replies
691 Views
Last post June 26, 2022, 1539 UTC
by Shortwave_Listener
0 Replies
768 Views
Last post November 23, 2015, 1347 UTC
by ChrisSmolinski
0 Replies
596 Views
Last post April 07, 2018, 1450 UTC
by ChrisSmolinski
0 Replies
481 Views
Last post July 26, 2020, 1344 UTC
by ChrisSmolinski
5 Replies
1984 Views
Last post January 17, 2015, 0140 UTC
by refmo
0 Replies
592 Views
Last post April 15, 2017, 2041 UTC
by ChrisSmolinski
5 Replies
986 Views
Last post February 12, 2022, 1426 UTC
by Bali_Frank
0 Replies
612 Views
Last post December 14, 2017, 1409 UTC
by ChrisSmolinski

 

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