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
5 Replies
3896 Views
Last post February 21, 2013, 2353 UTC
by ChrisSmolinski
3 Replies
3886 Views
Last post July 08, 2010, 1757 UTC
by 4405486
9 Replies
3883 Views
Last post October 21, 2019, 1509 UTC
by MDK2
V15

Started by Ary-B

1 Replies
3876 Views
Last post February 16, 2019, 1609 UTC
by shadypyro
8 Replies
3876 Views
Last post March 28, 2019, 1542 UTC
by kalvados
1 Replies
3876 Views
Last post February 17, 2021, 1051 UTC
by ~SIGINT~
6 Replies
3859 Views
Last post January 03, 2013, 1722 UTC
by Token
UVB-76

Started by Syco

5 Replies
3846 Views
Last post March 07, 2014, 0040 UTC
by Rizla
6 Replies
3846 Views
Last post March 30, 2013, 0329 UTC
by Land5urfer
0 Replies
3834 Views
Last post March 10, 2015, 1934 UTC
by ChrisSmolinski
2 Replies
3814 Views
Last post September 26, 2011, 1818 UTC
by Asuyuka
15 Replies
3809 Views
Last post June 29, 2024, 2323 UTC
by kris
6 Replies
3802 Views
Last post December 06, 2013, 2358 UTC
by ssfahrer
4 Replies
3801 Views
Last post June 06, 2017, 1518 UTC
by Strange Beacons
2 Replies
3795 Views
Last post December 20, 2012, 0456 UTC
by mr. mike
4 Replies
3788 Views
Last post December 22, 2016, 1308 UTC
by Token
M03

Started by Echo_One

9 Replies
3782 Views
Last post January 21, 2013, 0044 UTC
by desmoface
3 Replies
3774 Views
Last post December 02, 2012, 1418 UTC
by radio_cosmo
2 Replies
3767 Views
Last post April 07, 2012, 0047 UTC
by ulx2
4 Replies
3764 Views
Last post November 16, 2014, 0819 UTC
by hfam

 

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