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
3387 Views
Last post February 21, 2025, 1249 UTC
by ChrisSmolinski
0 Replies
2058 Views
Last post August 05, 2025, 1315 UTC
by ChrisSmolinski
0 Replies
987 Views
Last post November 22, 2020, 1159 UTC
by ChrisSmolinski
0 Replies
843 Views
Last post October 03, 2023, 1706 UTC
by ChrisSmolinski
0 Replies
1005 Views
Last post February 14, 2021, 1618 UTC
by ChrisSmolinski
0 Replies
1026 Views
Last post November 25, 2023, 1308 UTC
by ChrisSmolinski
0 Replies
963 Views
Last post March 30, 2021, 1413 UTC
by ChrisSmolinski
0 Replies
1147 Views
Last post February 03, 2022, 1219 UTC
by ChrisSmolinski
0 Replies
1330 Views
Last post August 17, 2024, 0920 UTC
by ChrisSmolinski
0 Replies
778 Views
Last post November 29, 2024, 1303 UTC
by ChrisSmolinski
0 Replies
787 Views
Last post April 01, 2023, 1432 UTC
by ChrisSmolinski
0 Replies
2189 Views
Last post February 28, 2025, 1219 UTC
by ChrisSmolinski
0 Replies
935 Views
Last post August 26, 2025, 1616 UTC
by ChrisSmolinski
0 Replies
988 Views
Last post November 22, 2020, 2144 UTC
by ChrisSmolinski
0 Replies
809 Views
Last post October 05, 2023, 1257 UTC
by ChrisSmolinski
0 Replies
1024 Views
Last post February 16, 2021, 0005 UTC
by ChrisSmolinski
0 Replies
970 Views
Last post February 16, 2021, 0006 UTC
by ChrisSmolinski
0 Replies
800 Views
Last post November 27, 2023, 1613 UTC
by ChrisSmolinski
0 Replies
1760 Views
Last post November 15, 2017, 1553 UTC
by ChrisSmolinski
2 Replies
1250 Views
Last post April 02, 2021, 1816 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 T-Shirt
by MitchellTimeDesigns