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
863 Views
Last post October 01, 2023, 1416 UTC
by ChrisSmolinski
2 Replies
1237 Views
Last post December 19, 2019, 1311 UTC
by ChrisSmolinski
0 Replies
815 Views
Last post January 30, 2024, 1610 UTC
by ChrisSmolinski
1 Replies
1476 Views
Last post November 07, 2020, 2332 UTC
by TheRelayStation
0 Replies
1058 Views
Last post January 01, 2021, 1304 UTC
by ChrisSmolinski
0 Replies
1428 Views
Last post August 12, 2024, 1534 UTC
by ChrisSmolinski
0 Replies
995 Views
Last post March 15, 2021, 1221 UTC
by ChrisSmolinski
2 Replies
1004 Views
Last post November 29, 2024, 1304 UTC
by ChrisSmolinski
0 Replies
1079 Views
Last post June 22, 2021, 2345 UTC
by ChrisSmolinski
0 Replies
790 Views
Last post March 25, 2023, 2058 UTC
by ChrisSmolinski
0 Replies
3282 Views
Last post February 21, 2025, 1249 UTC
by ChrisSmolinski
3 Replies
2471 Views
Last post January 13, 2019, 1641 UTC
by bds2
0 Replies
774 Views
Last post October 03, 2023, 1706 UTC
by ChrisSmolinski
3 Replies
1340 Views
Last post December 19, 2019, 0039 UTC
by Rob.
0 Replies
980 Views
Last post February 01, 2020, 1316 UTC
by ChrisSmolinski
0 Replies
908 Views
Last post January 31, 2024, 1220 UTC
by ChrisSmolinski
0 Replies
906 Views
Last post November 08, 2020, 1708 UTC
by ChrisSmolinski
0 Replies
1244 Views
Last post August 17, 2024, 0920 UTC
by ChrisSmolinski
0 Replies
1075 Views
Last post March 18, 2021, 1702 UTC
by ChrisSmolinski
0 Replies
678 Views
Last post November 29, 2024, 1303 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 Garden Flag
by MitchellTimeDesigns