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
821 Views
Last post August 25, 2013, 0116 UTC
by ChrisSmolinski
0 Replies
553 Views
Last post September 28, 2023, 1406 UTC
by ChrisSmolinski
0 Replies
926 Views
Last post May 28, 2017, 0414 UTC
by Rafman
0 Replies
352 Views
Last post May 12, 2023, 0214 UTC
by Skipmuck
0 Replies
354 Views
Last post June 22, 2023, 2254 UTC
by Shortwave_Listener
0 Replies
1111 Views
Last post December 19, 2013, 1319 UTC
by ChrisSmolinski
0 Replies
653 Views
Last post May 28, 2017, 1848 UTC
by ChrisSmolinski
0 Replies
345 Views
Last post July 14, 2023, 2345 UTC
by Skipmuck
0 Replies
316 Views
Last post July 15, 2023, 0125 UTC
by ~SIGINT~
0 Replies
754 Views
Last post August 24, 2013, 1301 UTC
by ChrisSmolinski
0 Replies
374 Views
Last post June 06, 2023, 1744 UTC
by ChrisSmolinski
0 Replies
314 Views
Last post August 06, 2023, 1507 UTC
by ChrisSmolinski
0 Replies
416 Views
Last post May 20, 2023, 2255 UTC
by Skipmuck
0 Replies
324 Views
Last post April 13, 2023, 1549 UTC
by ChrisSmolinski
0 Replies
1105 Views
Last post October 26, 2014, 0449 UTC
by Labviewguru
0 Replies
703 Views
Last post May 28, 2017, 1959 UTC
by ChrisSmolinski
0 Replies
538 Views
Last post December 31, 2024, 0020 UTC
by flexoman61
0 Replies
506 Views
Last post November 22, 2024, 2249 UTC
by ZFT
0 Replies
839 Views
Last post July 04, 2013, 1848 UTC
by ChrisSmolinski
0 Replies
375 Views
Last post July 30, 2023, 1402 UTC
by Big Badfish Al

 

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