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
3 Replies
1241 Views
Last post November 06, 2016, 1900 UTC
by Oliver
0 Replies
297 Views
Last post December 22, 2023, 1838 UTC
by ChrisSmolinski
3 Replies
1404 Views
Last post November 19, 2016, 1851 UTC
by ByteBORG
3 Replies
428 Views
Last post February 08, 2025, 1846 UTC
by hflstnr
0 Replies
817 Views
Last post February 28, 2017, 1836 UTC
by PirateSWL
0 Replies
325 Views
Last post February 09, 2025, 1740 UTC
by ChrisSmolinski
1 Replies
3773 Views
Last post May 26, 2019, 1904 UTC
by Skipmuck
0 Replies
811 Views
Last post August 11, 2017, 1836 UTC
by R4002
UNID 6925 USB 1830 UTC 1/18/16

Started by JoeFLIPS

0 Replies
784 Views
Last post January 18, 2016, 1831 UTC
by JoeFLIPS
3 Replies
1318 Views
Last post February 05, 2016, 1919 UTC
by flexoman61
0 Replies
346 Views
Last post January 17, 2023, 1831 UTC
by TheHappyWanker
0 Replies
300 Views
Last post May 04, 2025, 1829 UTC
by Radiouser
1 Replies
505 Views
Last post February 19, 2023, 1832 UTC
by hammarhead
4 Replies
1281 Views
Last post January 13, 2019, 1900 UTC
by Traveling Wave
2 Replies
605 Views
Last post September 21, 2019, 1823 UTC
by skeezix
6 Replies
1684 Views
Last post November 19, 2017, 1913 UTC
by aquabat
0 Replies
953 Views
Last post August 20, 2018, 1807 UTC
by KMD3HR
0 Replies
776 Views
Last post January 11, 2019, 1811 UTC
by aurora
2 Replies
1111 Views
Last post June 16, 2014, 1428 UTC
by ChrisSmolinski
4 Replies
826 Views
Last post November 14, 2020, 1857 UTC
by refmo

 

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