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
5358 Views
Last post August 14, 2015, 1546 UTC
by Token
2 Replies
5413 Views
Last post January 03, 2025, 1926 UTC
by RAH
3 Replies
5451 Views
Last post January 12, 2025, 1315 UTC
by wilddog
8 Replies
5830 Views
Last post August 31, 2016, 0752 UTC
by CrackedLCD
2 Replies
6056 Views
Last post February 06, 2016, 2342 UTC
by ChrisSmolinski
2 Replies
6359 Views
Last post February 22, 2015, 2204 UTC
by Dag
5 Replies
6591 Views
Last post May 06, 2015, 0412 UTC
by Antennae
2 Replies
6758 Views
Last post March 23, 2015, 2012 UTC
by IZ5PQT
11 Replies
6829 Views
Last post January 15, 2019, 1812 UTC
by R4002
4 Replies
6978 Views
Last post April 30, 2017, 1255 UTC
by Token
3 Replies
7721 Views
Last post July 19, 2025, 1552 UTC
by alain
6 Replies
8129 Views
Last post March 20, 2015, 2028 UTC
by mr magoo
2 Replies
8247 Views
Last post June 30, 2015, 2137 UTC
by Token
6 Replies
8585 Views
Last post June 04, 2015, 1719 UTC
by RCCI
0 Replies
8701 Views
Last post August 29, 2015, 1439 UTC
by Token
1 Replies
8730 Views
Last post March 01, 2015, 0411 UTC
by Token
9 Replies
8994 Views
Last post December 11, 2018, 0805 UTC
by n3ckf
19 Replies
9068 Views
Last post January 24, 2021, 1637 UTC
by liduck
23 Replies
9407 Views
Last post December 08, 2018, 0308 UTC
by Exo
5 Replies
9545 Views
Last post May 11, 2016, 0504 UTC
by Pigmeat

 

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