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
2 Replies
2276 Views
Last post October 11, 2018, 1122 UTC
by Pigmeat
0 Replies
1045 Views
Last post January 29, 2024, 1224 UTC
by ChrisSmolinski
0 Replies
1180 Views
Last post February 10, 2021, 1422 UTC
by ChrisSmolinski
0 Replies
904 Views
Last post September 30, 2023, 1442 UTC
by ChrisSmolinski
8 Replies
4085 Views
Last post December 24, 2013, 0140 UTC
by Evil Elvis
0 Replies
1124 Views
Last post July 30, 2025, 1210 UTC
by ChrisSmolinski
0 Replies
1251 Views
Last post June 26, 2023, 1413 UTC
by ChrisSmolinski
0 Replies
1263 Views
Last post May 02, 2020, 1538 UTC
by ChrisSmolinski
0 Replies
2985 Views
Last post February 11, 2025, 1250 UTC
by ChrisSmolinski
0 Replies
1107 Views
Last post December 25, 2019, 2105 UTC
by ChrisSmolinski
0 Replies
991 Views
Last post November 25, 2024, 1223 UTC
by ChrisSmolinski
1 Replies
1916 Views
Last post July 30, 2024, 1647 UTC
by ThaDood
0 Replies
1071 Views
Last post February 09, 2021, 1202 UTC
by ChrisSmolinski
0 Replies
976 Views
Last post September 29, 2023, 1631 UTC
by ChrisSmolinski
0 Replies
1811 Views
Last post February 10, 2025, 1212 UTC
by ChrisSmolinski
3 Replies
1973 Views
Last post December 25, 2019, 0038 UTC
by danlewis
0 Replies
1482 Views
Last post October 31, 2019, 1038 UTC
by ChrisSmolinski
0 Replies
1383 Views
Last post July 28, 2024, 1216 UTC
by ChrisSmolinski
1 Replies
1653 Views
Last post January 27, 2022, 0028 UTC
by myteaquinn
0 Replies
1045 Views
Last post March 22, 2021, 1433 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 House Flag
by MitchellTimeDesigns