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
6 Replies
3624 Views
Last post October 26, 2013, 1533 UTC
by Dr. Amp
5 Replies
1303 Views
Last post October 11, 2021, 2014 UTC
by dave524
1 Replies
1476 Views
Last post November 01, 2015, 1733 UTC
by R4002
1 Replies
1192 Views
Last post June 04, 2019, 1439 UTC
by R4002
18 Replies
3056 Views
Last post October 16, 2021, 1228 UTC
by Elf36
2 Replies
1971 Views
Last post October 19, 2013, 2233 UTC
by skeezix
1 Replies
3596 Views
Last post September 30, 2012, 1922 UTC
by ChrisSmolinski
3 Replies
2304 Views
Last post June 28, 2017, 1226 UTC
by Rob.
3 Replies
2017 Views
Last post February 19, 2018, 2136 UTC
by Pigmeat
0 Replies
1042 Views
Last post December 13, 2020, 2028 UTC
by ThaDood
0 Replies
525 Views
Last post September 18, 2024, 1739 UTC
by R4002
1 Replies
758 Views
Last post May 21, 2023, 1218 UTC
by R4002
0 Replies
539 Views
Last post November 08, 2023, 1352 UTC
by R4002
0 Replies
605 Views
Last post August 20, 2021, 1507 UTC
by mewmew66
0 Replies
623 Views
Last post August 20, 2021, 1529 UTC
by mewmew66
0 Replies
628 Views
Last post August 21, 2021, 0902 UTC
by mewmew66
1 Replies
813 Views
Last post August 21, 2021, 2029 UTC
by Elf36
3 Replies
1133 Views
Last post August 10, 2022, 1334 UTC
by Pigmeat
0 Replies
421 Views
Last post July 16, 2024, 0410 UTC
by RobRich
1 Replies
1934 Views
Last post October 18, 2013, 1954 UTC
by ChrisSmolinski

 

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