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
1986 Views
Last post December 13, 2010, 0022 UTC
by L Cee
5 Replies
1986 Views
Last post December 03, 2013, 0626 UTC
by redhat
Propagation

Started by Fansome

0 Replies
1984 Views
Last post March 05, 2010, 1852 UTC
by Fansome
2 Replies
1984 Views
Last post June 01, 2011, 0704 UTC
by cmradio
Dipole antenna seperation

Started by Elf36

8 Replies
1984 Views
Last post October 21, 2022, 1949 UTC
by RobRich
0 Replies
1982 Views
Last post March 07, 2011, 2008 UTC
by corq
2 Replies
1981 Views
Last post December 12, 2010, 0028 UTC
by PresentedIn4D
2 Replies
1981 Views
Last post July 30, 2019, 1156 UTC
by CoolAM Radio
Propagation

Started by Fansome

0 Replies
1980 Views
Last post May 22, 2009, 1636 UTC
by Fansome
0 Replies
1980 Views
Last post June 13, 2009, 1146 UTC
by Fansome
0 Replies
1980 Views
Last post July 01, 2009, 1727 UTC
by Fansome
0 Replies
1979 Views
Last post November 07, 2011, 0244 UTC
by Zane
lacedog

Started by Fansome

2 Replies
1979 Views
Last post October 27, 2012, 0615 UTC
by Fansome
5 Replies
1978 Views
Last post April 21, 2016, 1605 UTC
by redhat
2 Replies
1978 Views
Last post January 28, 2011, 0640 UTC
by n0pants
0 Replies
1977 Views
Last post August 30, 2009, 1238 UTC
by digitalsignalpro
0 Replies
1976 Views
Last post August 08, 2011, 1506 UTC
by Andrew Yoder
0 Replies
1975 Views
Last post August 08, 2009, 2340 UTC
by Fansome
0 Replies
1975 Views
Last post October 29, 2013, 1838 UTC
by K5KNT
1 Replies
1974 Views
Last post September 20, 2012, 1510 UTC
by John Poet

 

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