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
1 Replies
1239 Views
Last post August 20, 2014, 2048 UTC
by ChrisSmolinski
1 Replies
1334 Views
Last post August 27, 2014, 1944 UTC
by ChrisSmolinski
1 Replies
1310 Views
Last post August 31, 2014, 2217 UTC
by ChrisSmolinski
1 Replies
1191 Views
Last post October 26, 2014, 1440 UTC
by ChrisSmolinski
1 Replies
1272 Views
Last post August 31, 2019, 1431 UTC
by ChrisSmolinski
1 Replies
993 Views
Last post August 17, 2014, 1614 UTC
by ChrisSmolinski
1 Replies
1033 Views
Last post October 14, 2016, 1307 UTC
by ChrisSmolinski
1 Replies
625 Views
Last post November 21, 2019, 1648 UTC
by digitalmod
1 Replies
1306 Views
Last post February 13, 2017, 2351 UTC
by RickF
1 Replies
1301 Views
Last post January 01, 2014, 0536 UTC
by S. McArdle
1 Replies
903 Views
Last post April 30, 2018, 2015 UTC
by ChrisSmolinski
1 Replies
1144 Views
Last post October 02, 2017, 2116 UTC
by ChrisSmolinski
1 Replies
615 Views
Last post November 21, 2020, 0220 UTC
by Big Badfish Al
UNID 6940U 0054 UTC 01-01-14

Started by rdla4

1 Replies
1061 Views
Last post January 01, 2014, 1325 UTC
by refmo
1 Replies
749 Views
Last post April 21, 2016, 1514 UTC
by MDK2
1 Replies
1286 Views
Last post December 31, 2013, 2349 UTC
by RCCI
1 Replies
1270 Views
Last post December 31, 2013, 2358 UTC
by STF_RI
1 Replies
572 Views
Last post April 18, 2021, 2358 UTC
by JustGreg
1 Replies
830 Views
Last post December 28, 2019, 0113 UTC
by Radio Star
1 Replies
647 Views
Last post April 29, 2018, 0002 UTC
by slowtrain

 

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

Locked Topic
Sticky Topic
Poll


HFUnderground T-Shirt
HFUnderground House Flag
by MitchellTimeDesigns