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
944 Views
Last post January 17, 2021, 2326 UTC
by ChrisSmolinski
2 Replies
1462 Views
Last post December 17, 2017, 1703 UTC
by ChrisSmolinski
0 Replies
726 Views
Last post April 23, 2022, 2230 UTC
by Skipmuck
1 Replies
1306 Views
Last post January 17, 2018, 0037 UTC
by ChrisSmolinski
0 Replies
1052 Views
Last post March 09, 2019, 2351 UTC
by Skipmuck
1 Replies
766 Views
Last post February 15, 2023, 0303 UTC
by Shortwave_Listener
1 Replies
1170 Views
Last post March 22, 2022, 0038 UTC
by Fried Chickin'
4 Replies
1611 Views
Last post August 26, 2021, 2222 UTC
by syfr
2 Replies
944 Views
Last post February 16, 2023, 0534 UTC
by Shortwave_Listener
1 Replies
1052 Views
Last post November 13, 2019, 2339 UTC
by ChrisSmolinski
1 Replies
1315 Views
Last post January 18, 2018, 0005 UTC
by ChrisSmolinski
2 Replies
859 Views
Last post January 25, 2023, 1522 UTC
by ChrisSmolinski
1 Replies
1030 Views
Last post October 01, 2020, 1224 UTC
by ChrisSmolinski
0 Replies
719 Views
Last post February 16, 2023, 2358 UTC
by Skipmuck
0 Replies
927 Views
Last post March 05, 2024, 2328 UTC
by Skipmuck
0 Replies
990 Views
Last post July 10, 2021, 2339 UTC
by Skipmuck
1 Replies
870 Views
Last post October 03, 2020, 1140 UTC
by ChrisSmolinski
0 Replies
786 Views
Last post March 29, 2022, 2239 UTC
by Skipmuck
1 Replies
823 Views
Last post April 30, 2022, 2350 UTC
by ChrisSmolinski
3 Replies
1412 Views
Last post March 21, 2024, 1101 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