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
840 Views
Last post May 31, 2023, 2035 UTC
by TRI International
3 Replies
1040 Views
Last post May 28, 2023, 0923 UTC
by TRI International
1 Replies
792 Views
Last post May 15, 2023, 1129 UTC
by ChrisSmolinski
0 Replies
741 Views
Last post May 07, 2023, 1223 UTC
by ChrisSmolinski
1 Replies
1151 Views
Last post May 04, 2023, 1643 UTC
by ChrisSmolinski
0 Replies
778 Views
Last post May 03, 2023, 0900 UTC
by TRI International
4 Replies
1149 Views
Last post May 02, 2023, 0832 UTC
by Pigmeat
1 Replies
860 Views
Last post April 29, 2023, 1826 UTC
by ChrisSmolinski
4 Replies
1887 Views
Last post April 28, 2023, 0848 UTC
by Mathew
0 Replies
1069 Views
Last post April 24, 2023, 0236 UTC
by Pigmeat
4 Replies
1105 Views
Last post April 23, 2023, 0946 UTC
by TRI International
1 Replies
943 Views
Last post April 19, 2023, 0847 UTC
by TRI International
1 Replies
960 Views
Last post April 18, 2023, 0918 UTC
by TRI International
0 Replies
731 Views
Last post April 17, 2023, 0055 UTC
by Big Badfish Al
3 Replies
857 Views
Last post April 16, 2023, 1058 UTC
by Bali_Frank
0 Replies
722 Views
Last post April 13, 2023, 1522 UTC
by Shortwave_Listener
1 Replies
966 Views
Last post April 11, 2023, 0913 UTC
by TRI International
0 Replies
1244 Views
Last post April 11, 2023, 0046 UTC
by Shortwave_Listener
0 Replies
774 Views
Last post April 08, 2023, 2105 UTC
by ChrisSmolinski
0 Replies
877 Views
Last post April 04, 2023, 1221 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