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
348 Views
Last post October 19, 2025, 2108 UTC
by Radiouser
1 Replies
374 Views
Last post October 19, 2025, 1914 UTC
by Shortwave_Listener
10 Replies
826 Views
Last post October 19, 2025, 1826 UTC
by Radiouser
8 Replies
789 Views
Last post October 19, 2025, 1748 UTC
by Tony_Pavick
6 Replies
566 Views
Last post October 19, 2025, 1611 UTC
by Ron Hunsicker
6 Replies
938 Views
Last post October 19, 2025, 1542 UTC
by N2MLP
4 Replies
796 Views
Last post October 19, 2025, 1541 UTC
by N2MLP
17 Replies
1072 Views
Last post October 19, 2025, 1540 UTC
by N2MLP
1 Replies
222 Views
Last post October 19, 2025, 1539 UTC
by N2MLP
9 Replies
1089 Views
Last post October 19, 2025, 1538 UTC
by N2MLP
14 Replies
1342 Views
Last post October 19, 2025, 1537 UTC
by N2MLP
5 Replies
469 Views
Last post October 19, 2025, 1536 UTC
by N2MLP
15 Replies
966 Views
Last post October 19, 2025, 1534 UTC
by N2MLP
8 Replies
507 Views
Last post October 19, 2025, 1030 UTC
by TRI International
6 Replies
536 Views
Last post October 19, 2025, 0326 UTC
by Professor
12 Replies
778 Views
Last post October 18, 2025, 2226 UTC
by Héctor
2 Replies
398 Views
Last post October 18, 2025, 2215 UTC
by Big Badfish Al
10 Replies
1081 Views
Last post October 18, 2025, 2152 UTC
by Marcy1
5 Replies
487 Views
Last post October 18, 2025, 1838 UTC
by jackroberts
0 Replies
216 Views
Last post October 18, 2025, 1837 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 T-Shirt
by MitchellTimeDesigns