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
800 Views
Last post October 22, 2024, 1428 UTC
by ChrisSmolinski
0 Replies
929 Views
Last post March 12, 2021, 1310 UTC
by ChrisSmolinski
0 Replies
813 Views
Last post December 30, 2024, 1302 UTC
by ChrisSmolinski
0 Replies
1902 Views
Last post June 15, 2025, 1534 UTC
by ChrisSmolinski
0 Replies
1240 Views
Last post December 29, 2021, 2233 UTC
by ChrisSmolinski
0 Replies
720 Views
Last post September 12, 2023, 1208 UTC
by ChrisSmolinski
1 Replies
1020 Views
Last post October 20, 2019, 0259 UTC
by PirateSWL
0 Replies
1007 Views
Last post January 29, 2020, 1559 UTC
by ChrisSmolinski
0 Replies
785 Views
Last post February 27, 2024, 1243 UTC
by ChrisSmolinski
9 Replies
2909 Views
Last post December 02, 2013, 1330 UTC
by atrainradio
0 Replies
962 Views
Last post June 17, 2024, 1234 UTC
by ChrisSmolinski
8 Replies
2555 Views
Last post October 19, 2014, 0249 UTC
by BDM
0 Replies
974 Views
Last post October 23, 2024, 1132 UTC
by ChrisSmolinski
0 Replies
1096 Views
Last post March 12, 2021, 2321 UTC
by ChrisSmolinski
0 Replies
795 Views
Last post January 01, 2025, 1215 UTC
by ChrisSmolinski
2 Replies
1701 Views
Last post October 03, 2021, 1952 UTC
by ChrisSmolinski
0 Replies
1260 Views
Last post June 15, 2025, 1719 UTC
by ChrisSmolinski
0 Replies
1321 Views
Last post January 09, 2019, 1230 UTC
by ChrisSmolinski
0 Replies
739 Views
Last post September 12, 2023, 1212 UTC
by ChrisSmolinski
0 Replies
1191 Views
Last post December 19, 2023, 1352 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