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
1070 Views
Last post August 22, 2015, 1614 UTC
by ChrisSmolinski
0 Replies
593 Views
Last post January 04, 2016, 0006 UTC
by ChrisSmolinski
0 Replies
782 Views
Last post February 01, 2013, 1630 UTC
by ChrisSmolinski
0 Replies
3383 Views
Last post February 01, 2013, 2152 UTC
by ChrisSmolinski
0 Replies
537 Views
Last post December 08, 2019, 1549 UTC
by ChrisSmolinski
0 Replies
829 Views
Last post February 08, 2013, 1838 UTC
by Sealord
0 Replies
499 Views
Last post March 22, 2022, 2340 UTC
by ~SIGINT~
0 Replies
521 Views
Last post April 02, 2020, 2213 UTC
by Big Badfish Al
0 Replies
820 Views
Last post May 31, 2013, 1242 UTC
by ChrisSmolinski
0 Replies
439 Views
Last post March 21, 2020, 1503 UTC
by ChrisSmolinski
0 Replies
1100 Views
Last post April 07, 2013, 2205 UTC
by ChrisSmolinski
0 Replies
776 Views
Last post July 07, 2014, 0030 UTC
by ChrisSmolinski
0 Replies
716 Views
Last post December 25, 2019, 0809 UTC
by Chad556
0 Replies
827 Views
Last post January 04, 2016, 1444 UTC
by ChrisSmolinski
0 Replies
798 Views
Last post July 07, 2014, 1216 UTC
by ChrisSmolinski
0 Replies
860 Views
Last post January 07, 2016, 1553 UTC
by ChrisSmolinski
0 Replies
786 Views
Last post February 02, 2013, 1642 UTC
by ChrisSmolinski
0 Replies
1107 Views
Last post October 19, 2014, 1823 UTC
by ChrisSmolinski
0 Replies
732 Views
Last post March 25, 2013, 1306 UTC
by ChrisSmolinski
0 Replies
1064 Views
Last post February 02, 2013, 2310 UTC
by ff

 

Normal Topic
Hot Topic (More than 15 replies)
Very Hot Topic (More than 25 replies)

Locked Topic
Sticky Topic
Poll


HFUnderground T-Shirt
HFUnderground Garden Flag
by MitchellTimeDesigns