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
1203 Views
Last post April 05, 2013, 2231 UTC
by jFarley
0 Replies
1203 Views
Last post May 23, 2016, 1117 UTC
by ChrisSmolinski
2 Replies
1203 Views
Last post July 04, 2017, 1420 UTC
by DaveJV
1 Replies
1203 Views
Last post September 28, 2017, 1614 UTC
by ChrisSmolinski
3 Replies
1203 Views
Last post July 06, 2018, 1643 UTC
by MDK2
0 Replies
1203 Views
Last post September 10, 2018, 1418 UTC
by ChrisSmolinski
2 Replies
1203 Views
Last post December 11, 2018, 2248 UTC
by blw
2 Replies
1203 Views
Last post December 13, 2018, 2306 UTC
by Josh
2 Replies
1203 Views
Last post September 01, 2019, 1646 UTC
by aurora
5 Replies
1203 Views
Last post December 02, 2019, 2226 UTC
by Josh
4 Replies
1203 Views
Last post May 24, 2020, 0437 UTC
by Dr. Strangelove
7 Replies
1203 Views
Last post April 05, 2021, 2300 UTC
by ku4a
13 Replies
1203 Views
Last post November 30, 2024, 0148 UTC
by Tony_Pavick
4 Replies
1203 Views
Last post April 07, 2025, 1903 UTC
by M R I
4 Replies
1202 Views
Last post June 04, 2025, 0123 UTC
by J. Carlos Pérez Montero
3 Replies
1202 Views
Last post September 19, 2015, 1812 UTC
by ByteBORG
1 Replies
1202 Views
Last post November 20, 2015, 0027 UTC
by JoeFLIPS
3 Replies
1202 Views
Last post May 20, 2016, 2332 UTC
by MDK2
1 Replies
1202 Views
Last post September 05, 2016, 0252 UTC
by myteaquinn
2 Replies
1202 Views
Last post November 04, 2016, 2357 UTC
by Skipmuck

 

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