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
14 Replies
1215 Views
Last post February 22, 2024, 0503 UTC
by TheHappyWanker
14 Replies
1293 Views
Last post May 27, 2024, 0024 UTC
by N2MLP
6 Replies
1099 Views
Last post January 03, 2024, 2359 UTC
by N8SOT
10 Replies
1524 Views
Last post May 20, 2024, 0105 UTC
by Markokpik
18 Replies
1872 Views
Last post April 06, 2025, 0130 UTC
by Sarge94
9 Replies
570 Views
Last post July 12, 2025, 0037 UTC
by hflstnr
11 Replies
846 Views
Last post December 08, 2024, 1930 UTC
by Molvania Poacher
12 Replies
2442 Views
Last post May 25, 2025, 0213 UTC
by Killercat
12 Replies
1216 Views
Last post July 19, 2023, 1420 UTC
by ChrisSmolinski
14 Replies
1678 Views
Last post April 09, 2024, 2211 UTC
by dxace1
12 Replies
982 Views
Last post August 03, 2023, 2352 UTC
by Ray Lalleu
14 Replies
1352 Views
Last post August 30, 2024, 2209 UTC
by N2MLP
8 Replies
783 Views
Last post December 05, 2024, 2001 UTC
by Ron Hunsicker
6 Replies
586 Views
Last post December 11, 2024, 2327 UTC
by Ray Lalleu
5 Replies
558 Views
Last post February 11, 2025, 1926 UTC
by ChrisSmolinski
4 Replies
3943 Views
Last post October 22, 2023, 1541 UTC
by Ct Yankee
18 Replies
1746 Views
Last post December 30, 2023, 0010 UTC
by Sarge94
11 Replies
1132 Views
Last post April 09, 2024, 0046 UTC
by N2MLP
16 Replies
2257 Views
Last post October 08, 2023, 0245 UTC
by Markokpik
7 Replies
2507 Views
Last post May 23, 2023, 0153 UTC
by Grumpy Grandpa

 

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