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
838 Views
Last post February 19, 2024, 1224 UTC
by ChrisSmolinski
9 Replies
4366 Views
Last post June 26, 2019, 1653 UTC
by ChrisSmolinski
0 Replies
943 Views
Last post May 09, 2024, 1246 UTC
by ChrisSmolinski
0 Replies
813 Views
Last post October 07, 2024, 1130 UTC
by ChrisSmolinski
0 Replies
1177 Views
Last post January 01, 2020, 1633 UTC
by ChrisSmolinski
0 Replies
757 Views
Last post December 10, 2024, 1216 UTC
by ChrisSmolinski
1 Replies
1658 Views
Last post December 23, 2012, 1901 UTC
by rdla4
0 Replies
1356 Views
Last post May 16, 2025, 1200 UTC
by ChrisSmolinski
0 Replies
950 Views
Last post November 22, 2020, 2148 UTC
by ChrisSmolinski
0 Replies
801 Views
Last post August 29, 2023, 1302 UTC
by ChrisSmolinski
0 Replies
924 Views
Last post February 16, 2021, 0006 UTC
by ChrisSmolinski
0 Replies
1674 Views
Last post November 15, 2017, 1553 UTC
by ChrisSmolinski
0 Replies
977 Views
Last post April 02, 2021, 1841 UTC
by ChrisSmolinski
0 Replies
927 Views
Last post December 08, 2023, 1938 UTC
by ChrisSmolinski
0 Replies
755 Views
Last post February 20, 2024, 1228 UTC
by ChrisSmolinski
0 Replies
7957 Views
Last post July 27, 2019, 1506 UTC
by ChrisSmolinski
0 Replies
920 Views
Last post May 15, 2024, 1611 UTC
by ChrisSmolinski
0 Replies
818 Views
Last post October 15, 2024, 1009 UTC
by ChrisSmolinski
1 Replies
1391 Views
Last post June 24, 2020, 1839 UTC
by ChrisSmolinski
0 Replies
1553 Views
Last post May 24, 2025, 1710 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