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
2218 Views
Last post July 10, 2009, 1628 UTC
by Tube Shortwave
1 Replies
1010 Views
Last post December 31, 2018, 2140 UTC
by Josh
1 Replies
1206 Views
Last post December 10, 2018, 1420 UTC
by MDK2
10 Replies
3042 Views
Last post December 14, 2018, 2241 UTC
by moof
1 Replies
1923 Views
Last post September 02, 2019, 2012 UTC
by Josh
1 Replies
1149 Views
Last post December 26, 2024, 1854 UTC
by ThaDood
0 Replies
906 Views
Last post May 03, 2022, 2139 UTC
by Traveling Wave
0 Replies
768 Views
Last post January 22, 2020, 1947 UTC
by Traveling Wave
0 Replies
787 Views
Last post February 21, 2022, 2239 UTC
by Traveling Wave
0 Replies
733 Views
Last post June 26, 2025, 0039 UTC
by Tony_Pavick
0 Replies
617 Views
Last post July 03, 2025, 1142 UTC
by Tony_Pavick
13 Replies
6094 Views
Last post November 19, 2022, 1139 UTC
by Ethernut
5 Replies
2374 Views
Last post October 21, 2017, 0105 UTC
by Tom S
3 Replies
1833 Views
Last post June 17, 2014, 0235 UTC
by Tom S
20 Replies
6009 Views
Last post December 23, 2016, 1644 UTC
by Josh
10 Replies
4068 Views
Last post December 01, 2014, 1739 UTC
by ChrisSmolinski
4 Replies
2230 Views
Last post November 04, 2013, 0339 UTC
by RCCI
13 Replies
6072 Views
Last post August 31, 2018, 1000 UTC
by Tim Bucknall
3 Replies
1910 Views
Last post May 09, 2019, 1720 UTC
by Josh
0 Replies
1008 Views
Last post September 19, 2018, 1253 UTC
by TickingMind

 

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