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
929 Views
Last post December 23, 2016, 1720 UTC
by Daniel Wyllyans
0 Replies
982 Views
Last post December 27, 2016, 2318 UTC
by Daniel Wyllyans
0 Replies
924 Views
Last post December 27, 2016, 2324 UTC
by Daniel Wyllyans
18891?

Started by rec/cat7610

4 Replies
978 Views
Last post February 12, 2022, 0924 UTC
by tiNG
2 Replies
1830 Views
Last post August 28, 2013, 1248 UTC
by ka1iic
2 Replies
768 Views
Last post April 16, 2022, 1134 UTC
by Marcy1
1 Replies
2557 Views
Last post August 14, 2015, 0357 UTC
by Zoidberg
1 Replies
1181 Views
Last post March 08, 2014, 1025 UTC
by Chanter
3 Replies
2222 Views
Last post October 24, 2015, 1319 UTC
by Oliver
5 Replies
1597 Views
Last post December 22, 2016, 1956 UTC
by Daniel Wyllyans
0 Replies
1129 Views
Last post December 19, 2014, 1150 UTC
by ChrisSmolinski
0 Replies
1660 Views
Last post September 27, 2014, 2225 UTC
by ka1iic
5 Replies
5499 Views
Last post January 08, 2015, 1811 UTC
by DeltaCharlie
0 Replies
1143 Views
Last post October 03, 2014, 1830 UTC
by Rafman
0 Replies
511 Views
Last post April 19, 2022, 1842 UTC
by Mad Radio DXer UK
3 Replies
1941 Views
Last post September 16, 2018, 1208 UTC
by ChrisSmolinski
2 Replies
3143 Views
Last post November 21, 2014, 1926 UTC
by Token
3044 USB

Started by Looking-Glass

1 Replies
2335 Views
Last post July 25, 2019, 1341 UTC
by R4002
3242U question?

Started by rec/cat7610

1 Replies
550 Views
Last post February 07, 2022, 1202 UTC
by rec/cat7610
6 Replies
3280 Views
Last post October 28, 2013, 0122 UTC
by BDM

 

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