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
8 Replies
924 Views
Last post February 15, 2023, 0230 UTC
by Markokpik
3 Replies
712 Views
Last post January 29, 2024, 0240 UTC
by William Hassig
5 Replies
1164 Views
Last post July 04, 2024, 1340 UTC
by N2MLP
2 Replies
755 Views
Last post March 21, 2022, 0159 UTC
by refmo
14 Replies
1078 Views
Last post August 25, 2024, 0132 UTC
by Jon Shoe - N8UL
24 Replies
2246 Views
Last post July 04, 2022, 0222 UTC
by DJFrederick
8 Replies
273 Views
Last post August 16, 2025, 0239 UTC
by William Hassig
14 Replies
2048 Views
Last post February 03, 2024, 0220 UTC
by Shortwave_Listener
9 Replies
6373 Views
Last post November 10, 2013, 1447 UTC
by jFarley
9 Replies
1259 Views
Last post January 16, 2022, 0322 UTC
by dxace1
10 Replies
966 Views
Last post February 22, 2023, 1743 UTC
by Groundwire
4 Replies
564 Views
Last post August 06, 2023, 0248 UTC
by Skipmuck
4 Replies
896 Views
Last post June 06, 2020, 0428 UTC
by Molvania Poacher
15 Replies
1795 Views
Last post September 02, 2024, 1406 UTC
by caodwolf
6 Replies
420 Views
Last post December 25, 2024, 0204 UTC
by Charlie_Dont_Surf
4 Replies
2040 Views
Last post November 04, 2011, 2322 UTC
by Alex_in_West_Virginia
4 Replies
792 Views
Last post October 22, 2023, 0156 UTC
by shadypyro
4 Replies
2668 Views
Last post November 19, 2013, 1259 UTC
by ChrisSmolinski
0 Replies
341 Views
Last post November 17, 2023, 0008 UTC
by myteaquinn
7 Replies
561 Views
Last post June 27, 2025, 0207 UTC
by Sarge94

 

Normal Topic
Hot Topic (More than 15 replies)
Very Hot Topic (More than 25 replies)

Locked Topic
Sticky Topic
Poll


HFUnderground Mug
HFUnderground Mug
by MitchellTimeDesigns