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
1494 Views
Last post January 01, 2024, 0133 UTC
by N2MLP
0 Replies
1180 Views
Last post January 25, 2020, 2154 UTC
by dr.bj.turner
1 Replies
2650 Views
Last post November 17, 2012, 1053 UTC
by Kilokat7
1 Replies
791 Views
Last post September 22, 2025, 1418 UTC
by ChrisSmolinski
0 Replies
1401 Views
Last post March 06, 2023, 0325 UTC
by DX Pete
0 Replies
1075 Views
Last post March 04, 2023, 0113 UTC
by DX Pete
0 Replies
361 Views
Last post November 21, 2025, 0000 UTC
by DX Pete
0 Replies
999 Views
Last post February 27, 2023, 0121 UTC
by DX Pete
0 Replies
891 Views
Last post February 18, 2023, 0226 UTC
by DX Pete
0 Replies
1077 Views
Last post February 06, 2023, 0216 UTC
by DX Pete
1 Replies
1205 Views
Last post January 30, 2023, 1850 UTC
by currentsitguy
0 Replies
996 Views
Last post January 29, 2023, 0147 UTC
by DX Pete
0 Replies
1043 Views
Last post January 18, 2023, 0230 UTC
by DX Pete
1 Replies
1311 Views
Last post January 16, 2023, 1551 UTC
by DX Pete
1 Replies
1224 Views
Last post December 01, 2024, 1316 UTC
by ChrisSmolinski
2 Replies
1994 Views
Last post October 06, 2023, 1356 UTC
by ChrisSmolinski
1 Replies
1689 Views
Last post March 19, 2024, 1125 UTC
by ChrisSmolinski
1 Replies
1508 Views
Last post February 29, 2024, 1350 UTC
by ChrisSmolinski
0 Replies
2404 Views
Last post July 13, 2017, 2035 UTC
by edbar76
5 Replies
3702 Views
Last post December 27, 2013, 0039 UTC
by The Insomniac

 

Normal Topic
Hot Topic (More than 15 replies)
Very Hot Topic (More than 25 replies)

Locked Topic
Sticky Topic
Poll


HFUnderground T-Shirt
HFUnderground House Flag
by MitchellTimeDesigns