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
0 Replies
6406 Views
Last post November 25, 2022, 1627 UTC
by Shortwave_Listener
0 Replies
25735 Views
Last post July 30, 2019, 1153 UTC
by ChrisSmolinski
2 Replies
18282 Views
Last post August 31, 2019, 1750 UTC
by ChrisSmolinski
0 Replies
11577 Views
Last post August 27, 2019, 1109 UTC
by ChrisSmolinski
24 Replies
10907 Views
Last post August 21, 2016, 0847 UTC
by EliteData
3 Replies
10049 Views
Last post July 28, 2019, 1802 UTC
by Big Badfish Al
11 Replies
9027 Views
Last post November 25, 2010, 2134 UTC
by Andrew Yoder
9 Replies
8065 Views
Last post October 13, 2012, 1747 UTC
by jFarley
0 Replies
7952 Views
Last post July 27, 2019, 1506 UTC
by ChrisSmolinski
15 Replies
7549 Views
Last post March 09, 2014, 0633 UTC
by DeltaCharlie
8 Replies
6980 Views
Last post December 26, 2013, 0610 UTC
by redhat
19 Replies
6110 Views
Last post December 24, 2017, 0240 UTC
by Andrew Yoder
2 Replies
5719 Views
Last post February 26, 2012, 0337 UTC
by skeezix
5 Replies
5607 Views
Last post June 16, 2025, 2119 UTC
by TRI International
11 Replies
5481 Views
Last post February 09, 2015, 2346 UTC
by BDM
9 Replies
5381 Views
Last post January 06, 2013, 2211 UTC
by mr. mike
3 Replies
5285 Views
Last post November 01, 2012, 0411 UTC
by BDM
1 Replies
5219 Views
Last post January 02, 2012, 0319 UTC
by Zane
11 Replies
5063 Views
Last post October 09, 2024, 1210 UTC
by ChrisSmolinski
13 Replies
5052 Views
Last post July 25, 2017, 1620 UTC
by Josh

 

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