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
1350 Views
Last post January 19, 2015, 2336 UTC
by ByteBORG
0 Replies
1378 Views
Last post March 29, 2015, 0033 UTC
by BigAl
4 Replies
2322 Views
Last post January 18, 2015, 1329 UTC
by ByteBORG
2 Replies
1620 Views
Last post February 22, 2015, 0123 UTC
by Ron Hunsicker
0 Replies
1351 Views
Last post March 20, 2017, 1054 UTC
by Humat
0 Replies
1036 Views
Last post June 01, 2014, 1833 UTC
by ChrisSmolinski
3 Replies
1694 Views
Last post October 08, 2014, 0033 UTC
by jFarley
1 Replies
218 Views
Last post July 06, 2024, 1149 UTC
by ChrisSmolinski
0 Replies
944 Views
Last post September 28, 2013, 0025 UTC
by ChrisSmolinski
2 Replies
1729 Views
Last post July 29, 2015, 2311 UTC
by Zoidberg
5 Replies
2095 Views
Last post January 13, 2016, 0856 UTC
by Skipmuck
1 Replies
1354 Views
Last post March 09, 2014, 1814 UTC
by Beerus Maximus
2 Replies
1686 Views
Last post June 15, 2015, 2355 UTC
by Oliver
1 Replies
1088 Views
Last post November 04, 2015, 2330 UTC
by jFarley
3 Replies
763 Views
Last post March 23, 2024, 0238 UTC
by Mick Boyle
1 Replies
1476 Views
Last post November 09, 2015, 2124 UTC
by ChrisSmolinski
UNID 6881 USB? 0051 UTC 11 Nov 2013

Started by Capt. Radio

4 Replies
2362 Views
Last post November 15, 2013, 1714 UTC
by Token
2 Replies
1128 Views
Last post September 18, 2016, 0000 UTC
by ByteBORG
1 Replies
1106 Views
Last post December 07, 2015, 0256 UTC
by slowtrain
1 Replies
705 Views
Last post December 10, 2022, 2313 UTC
by Shortwave_Listener

 

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