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
1 Replies
1036 Views
Last post May 14, 2017, 0120 UTC
by Terry
0 Replies
1035 Views
Last post January 22, 2018, 1755 UTC
by R4002
0 Replies
1021 Views
Last post August 05, 2018, 1410 UTC
by R4002
0 Replies
1020 Views
Last post August 16, 2020, 1321 UTC
by ChrisSmolinski
0 Replies
1019 Views
Last post June 12, 2017, 2005 UTC
by R4002
5 Replies
1018 Views
Last post December 29, 2022, 0152 UTC
by Shortwave_Listener
0 Replies
1017 Views
Last post June 02, 2019, 0237 UTC
by R4002
7 Replies
1016 Views
Last post November 01, 2022, 1158 UTC
by R4002
0 Replies
1013 Views
Last post January 24, 2019, 1748 UTC
by R4002
2 Replies
1013 Views
Last post October 27, 2023, 2344 UTC
by Grinch
0 Replies
1012 Views
Last post June 27, 2020, 0300 UTC
by chanito
0 Replies
1010 Views
Last post December 23, 2019, 0718 UTC
by ThaDood
0 Replies
1009 Views
Last post June 22, 2017, 1836 UTC
by R4002
0 Replies
1007 Views
Last post July 15, 2017, 1446 UTC
by R4002
1 Replies
1005 Views
Last post November 12, 2019, 2200 UTC
by shadypyro
0 Replies
1005 Views
Last post June 25, 2017, 1719 UTC
by R4002
0 Replies
1004 Views
Last post October 26, 2015, 1245 UTC
by prldx
0 Replies
1004 Views
Last post January 07, 2016, 1550 UTC
by ChrisSmolinski
11 Replies
995 Views
Last post December 08, 2022, 0223 UTC
by Pigmeat
0 Replies
991 Views
Last post July 03, 2019, 1838 UTC
by refmo

 

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