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
194 Views
Last post January 11, 2024, 1252 UTC
by ChrisSmolinski
0 Replies
696 Views
Last post June 18, 2018, 1624 UTC
by ChrisSmolinski
0 Replies
580 Views
Last post September 01, 2020, 1211 UTC
by ChrisSmolinski
0 Replies
625 Views
Last post December 29, 2019, 2307 UTC
by ChrisSmolinski
0 Replies
708 Views
Last post January 17, 2019, 1341 UTC
by ChrisSmolinski
0 Replies
483 Views
Last post April 21, 2022, 1815 UTC
by ChrisSmolinski
0 Replies
815 Views
Last post October 05, 2019, 2247 UTC
by ChrisSmolinski
4 Replies
1813 Views
Last post February 28, 2018, 0049 UTC
by cgalazt
0 Replies
1424 Views
Last post May 11, 2019, 1451 UTC
by ChrisSmolinski
1 Replies
749 Views
Last post November 18, 2018, 2311 UTC
by Daniel Wyllyans
2 Replies
886 Views
Last post October 15, 2018, 1320 UTC
by ChrisSmolinski
0 Replies
594 Views
Last post September 24, 2018, 2337 UTC
by ChrisSmolinski
0 Replies
950 Views
Last post November 01, 2017, 2245 UTC
by ChrisSmolinski
0 Replies
165 Views
Last post May 17, 2024, 1257 UTC
by ChrisSmolinski
5 Replies
3670 Views
Last post March 29, 2017, 0617 UTC
by RainBrandy
0 Replies
587 Views
Last post December 20, 2018, 1136 UTC
by ChrisSmolinski
1 Replies
998 Views
Last post February 26, 2018, 0104 UTC
by BOR
0 Replies
521 Views
Last post February 19, 2022, 1140 UTC
by ChrisSmolinski
0 Replies
1065 Views
Last post November 18, 2018, 1448 UTC
by ChrisSmolinski
4 Replies
1318 Views
Last post January 15, 2018, 1009 UTC
by Daniel Wyllyans

 

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