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
5 Replies
2010 Views
Last post July 24, 2016, 1539 UTC
by sat_dxer
0 Replies
846 Views
Last post February 24, 2014, 0645 UTC
by vhavrilko
HM01 20-Nov-2016

Started by K5KNT

0 Replies
1126 Views
Last post November 20, 2016, 1926 UTC
by K5KNT
0 Replies
761 Views
Last post February 10, 2017, 2107 UTC
by Traveling Wave
0 Replies
907 Views
Last post February 03, 2017, 2115 UTC
by Traveling Wave
8 Replies
2531 Views
Last post January 27, 2017, 1731 UTC
by Venom6733
0 Replies
905 Views
Last post February 07, 2017, 2125 UTC
by Traveling Wave
1 Replies
1178 Views
Last post January 27, 2017, 2159 UTC
by Venom6733
7 Replies
3047 Views
Last post February 10, 2017, 2325 UTC
by MDK2
0 Replies
898 Views
Last post February 03, 2017, 2133 UTC
by Traveling Wave
0 Replies
856 Views
Last post February 01, 2017, 2142 UTC
by Traveling Wave
0 Replies
875 Views
Last post February 09, 2017, 2145 UTC
by Traveling Wave
0 Replies
899 Views
Last post February 11, 2017, 2158 UTC
by Traveling Wave
0 Replies
815 Views
Last post February 10, 2017, 2202 UTC
by Traveling Wave
0 Replies
905 Views
Last post February 02, 2017, 2233 UTC
by Traveling Wave
HM01 31MAY18

Started by Josh

0 Replies
889 Views
Last post May 31, 2018, 1928 UTC
by Josh
1 Replies
2715 Views
Last post January 06, 2013, 1413 UTC
by sat_dxer
HM01 5855 kHz AM 0527 UTC 02-26-14

Started by vhavrilko

1 Replies
1124 Views
Last post February 26, 2014, 2229 UTC
by Sollak
1 Replies
1587 Views
Last post July 18, 2014, 1231 UTC
by sat_dxer
HM01 9065 kHz AM 03-09-14 0759

Started by vhavrilko

1 Replies
1350 Views
Last post December 12, 2022, 0902 UTC
by HarryHydro

 

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