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
511 Views
Last post February 26, 2022, 1017 UTC
by Ethernut
0 Replies
603 Views
Last post February 21, 2022, 1855 UTC
by kris
3 Replies
1097 Views
Last post February 13, 2022, 0046 UTC
by refmo
18891?

Started by rec/cat7610

4 Replies
944 Views
Last post February 12, 2022, 0924 UTC
by tiNG
0 Replies
490 Views
Last post February 10, 2022, 1215 UTC
by ChrisSmolinski
3242U question?

Started by rec/cat7610

1 Replies
527 Views
Last post February 07, 2022, 1202 UTC
by rec/cat7610
0 Replies
484 Views
Last post February 06, 2022, 1259 UTC
by TRI International
0 Replies
462 Views
Last post February 05, 2022, 1556 UTC
by Magnitic
3 Replies
955 Views
Last post February 02, 2022, 2233 UTC
by rec/cat7610
3 Replies
1027 Views
Last post February 02, 2022, 1514 UTC
by ~SIGINT~
18049.0 Dasher

Started by rec/cat7610

0 Replies
491 Views
Last post February 01, 2022, 1842 UTC
by rec/cat7610
6779.9 ticks

Started by Matambale

3 Replies
2238 Views
Last post January 31, 2022, 0938 UTC
by UtilitySeattle
0 Replies
478 Views
Last post January 29, 2022, 1509 UTC
by TRI International
1 Replies
559 Views
Last post January 18, 2022, 2352 UTC
by kris
3 Replies
1090 Views
Last post January 07, 2022, 1137 UTC
by RobRich
0 Replies
624 Views
Last post December 31, 2021, 1057 UTC
by kris
0 Replies
570 Views
Last post December 27, 2021, 0230 UTC
by radiorandy
3 Replies
1050 Views
Last post December 23, 2021, 0849 UTC
by Rurik
0 Replies
567 Views
Last post December 22, 2021, 2210 UTC
by liduck
0 Replies
539 Views
Last post December 18, 2021, 1047 UTC
by radiorandy

 

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