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
1311 Views
Last post December 19, 2017, 1921 UTC
by ChrisSmolinski
0 Replies
1312 Views
Last post December 24, 2015, 2128 UTC
by flexoman61
0 Replies
1312 Views
Last post September 14, 2023, 1305 UTC
by TRI International
0 Replies
1317 Views
Last post July 09, 2023, 0440 UTC
by Shortwave_Listener
0 Replies
1318 Views
Last post October 07, 2016, 1842 UTC
by flexoman61
0 Replies
1320 Views
Last post July 26, 2014, 1550 UTC
by ka1iic
0 Replies
1321 Views
Last post January 25, 2017, 1614 UTC
by R4002
0 Replies
1322 Views
Last post December 07, 2013, 0120 UTC
by rdla4
0 Replies
1326 Views
Last post February 12, 2023, 1959 UTC
by kris
0 Replies
1327 Views
Last post April 14, 2017, 0121 UTC
by R4002
0 Replies
1327 Views
Last post January 20, 2020, 2105 UTC
by Matt_B
0 Replies
1328 Views
Last post July 16, 2014, 2255 UTC
by rdla4
0 Replies
1330 Views
Last post January 10, 2014, 0025 UTC
by jFarley
0 Replies
1330 Views
Last post September 26, 2024, 0437 UTC
by Weatherman
0 Replies
1330 Views
Last post February 27, 2016, 0135 UTC
by Token
0 Replies
1332 Views
Last post April 10, 2017, 1100 UTC
by R4002
0 Replies
1333 Views
Last post March 04, 2023, 1209 UTC
by TRI International
0 Replies
1333 Views
Last post March 21, 2023, 0608 UTC
by Shortwave_Listener
0 Replies
1334 Views
Last post January 25, 2017, 1456 UTC
by R4002
2 Replies
1334 Views
Last post September 02, 2022, 0056 UTC
by ~SIGINT~

 

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