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
2 Replies
882 Views
Last post December 21, 2022, 1834 UTC
by R4002
1 Replies
522 Views
Last post March 13, 2024, 1744 UTC
by R4002
0 Replies
677 Views
Last post October 03, 2023, 1455 UTC
by RobRich
0 Replies
669 Views
Last post August 31, 2023, 0933 UTC
by TRI International
0 Replies
848 Views
Last post July 14, 2023, 1302 UTC
by R4002
0 Replies
625 Views
Last post January 02, 2023, 1319 UTC
by RobRich
0 Replies
640 Views
Last post June 16, 2022, 2321 UTC
by vlf2hf
11M appears to be open a bit

Started by Elf36

7 Replies
1504 Views
Last post December 24, 2021, 1121 UTC
by RobRich
0 Replies
632 Views
Last post June 09, 2023, 1547 UTC
by R4002
1 Replies
742 Views
Last post October 09, 2022, 1819 UTC
by ThaDood
0 Replies
546 Views
Last post October 08, 2022, 1215 UTC
by ChrisSmolinski
3 Replies
1078 Views
Last post November 09, 2021, 2213 UTC
by Elf36
11m Activity 7 NOV 2021

Started by Elf36

2 Replies
814 Views
Last post November 07, 2021, 1455 UTC
by Elf36
3 Replies
969 Views
Last post November 06, 2021, 1543 UTC
by Elf36
0 Replies
561 Views
Last post October 05, 2022, 1151 UTC
by ChrisSmolinski
3 Replies
994 Views
Last post November 05, 2021, 1657 UTC
by Elf36
0 Replies
549 Views
Last post October 04, 2022, 1230 UTC
by ChrisSmolinski
4 Replies
995 Views
Last post October 31, 2021, 2016 UTC
by Elf36
5 Replies
1068 Views
Last post October 30, 2021, 2109 UTC
by Elf36
1 Replies
670 Views
Last post October 03, 2022, 2023 UTC
by RobRich

 

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

Locked Topic
Sticky Topic
Poll


HFUnderground T-Shirt
HFUnderground T-Shirt
by MitchellTimeDesigns