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
301 Views
Last post April 27, 2020, 0809 UTC
by Ray Lalleu
0 Replies
190 Views
Last post December 03, 2024, 0818 UTC
by dave1965
0 Replies
378 Views
Last post October 21, 2018, 0804 UTC
by Ray Lalleu
0 Replies
389 Views
Last post October 13, 2018, 0803 UTC
by Ray Lalleu
0 Replies
394 Views
Last post February 17, 2019, 0759 UTC
by Ray Lalleu
0 Replies
136 Views
Last post May 18, 2025, 0748 UTC
by europirate
0 Replies
401 Views
Last post June 16, 2019, 0744 UTC
by Ray Lalleu
3 Replies
460 Views
Last post April 16, 2023, 1039 UTC
by europirate
0 Replies
195 Views
Last post June 01, 2025, 0148 UTC
by Panda_NL
UNID 6295 AM 0027 UTC 8/13/16

Started by JoeFLIPS

0 Replies
681 Views
Last post August 13, 2016, 0028 UTC
by JoeFLIPS
UNID 6295 AM 0023 UTC 6/29/17

Started by JoeFLIPS

0 Replies
629 Views
Last post June 29, 2017, 0023 UTC
by JoeFLIPS
0 Replies
847 Views
Last post May 08, 2016, 0019 UTC
by Rafman
0 Replies
611 Views
Last post May 05, 2018, 1807 UTC
by The Ether Hacker
1 Replies
380 Views
Last post November 27, 2020, 2210 UTC
by Ray Lalleu
0 Replies
370 Views
Last post July 09, 2022, 1907 UTC
by kris
0 Replies
224 Views
Last post March 21, 2024, 1504 UTC
by kris
0 Replies
139 Views
Last post December 10, 2024, 1210 UTC
by kris
0 Replies
216 Views
Last post January 29, 2025, 0003 UTC
by kris
0 Replies
465 Views
Last post August 27, 2018, 1849 UTC
by Ray Lalleu
0 Replies
1026 Views
Last post November 29, 2015, 2205 UTC
by Rafman

 

Normal Topic
Hot Topic (More than 15 replies)
Very Hot Topic (More than 25 replies)

Locked Topic
Sticky Topic
Poll


HFUnderground T-Shirt
HFUnderground House Flag
by MitchellTimeDesigns