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 permissable in your locale.

Subject / Started by Last post
10/11M activity

Started by Elf36

0 Replies
480 Views
Last post August 23, 2021, 1510 UTC
by Elf36
0 Replies
489 Views
Last post June 08, 2021, 0146 UTC
by RobRich
0 Replies
491 Views
Last post February 22, 2022, 1319 UTC
by ChrisSmolinski
1 Replies
492 Views
Last post February 20, 2022, 1818 UTC
by Elf36
0 Replies
493 Views
Last post April 08, 2020, 0049 UTC
by sdruzer
2 Replies
493 Views
Last post December 26, 2021, 1748 UTC
by Elf36
2 Replies
497 Views
Last post February 04, 2022, 0013 UTC
by Elf36
2 Replies
498 Views
Last post February 12, 2022, 1950 UTC
by Elf36
1 Replies
500 Views
Last post October 01, 2021, 1417 UTC
by R4002
3 Replies
504 Views
Last post November 03, 2022, 1230 UTC
by R4002
1 Replies
506 Views
Last post October 26, 2021, 0220 UTC
by Elf36
2 Replies
506 Views
Last post January 02, 2022, 1316 UTC
by Elf36
0 Replies
510 Views
Last post January 22, 2022, 1245 UTC
by RobRich
1 Replies
511 Views
Last post October 02, 2021, 1428 UTC
by R4002
10/11M activity?

Started by Elf36

1 Replies
511 Views
Last post December 13, 2021, 1743 UTC
by Elf36
11m Activity 7 NOV 2021

Started by Elf36

2 Replies
514 Views
Last post November 07, 2021, 1455 UTC
by Elf36
0 Replies
517 Views
Last post May 23, 2021, 1809 UTC
by bamaDX
1 Replies
523 Views
Last post October 17, 2021, 1917 UTC
by ChrisSmolinski
0 Replies
524 Views
Last post June 11, 2021, 1732 UTC
by ChrisSmolinski
1 Replies
525 Views
Last post January 11, 2022, 2057 UTC
by Josh

 

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