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
1217 Views
Last post January 25, 2021, 1507 UTC
by Fred Smith
0 Replies
751 Views
Last post February 03, 2022, 0125 UTC
by Erik Mattson
3 Replies
1144 Views
Last post February 20, 2022, 0957 UTC
by tiNG
0 Replies
1851 Views
Last post December 10, 2012, 0138 UTC
by radio_cosmo
1 Replies
1069 Views
Last post May 29, 2022, 2008 UTC
by MDK2
3 Replies
2503 Views
Last post November 16, 2015, 0200 UTC
by Terry
5345 CW

Started by eduardo

0 Replies
2106 Views
Last post November 28, 2018, 2029 UTC
by eduardo
0 Replies
1513 Views
Last post October 16, 2015, 1855 UTC
by tonynypd
0 Replies
1734 Views
Last post January 10, 2012, 1422 UTC
by ChrisSmolinski
0 Replies
1473 Views
Last post February 28, 2013, 0346 UTC
by skeezix
5800 Khz numbers

Started by beaconman « 1 2 »

15 Replies
10334 Views
Last post February 25, 2011, 1726 UTC
by Token
3 Replies
2517 Views
Last post December 02, 2012, 1418 UTC
by radio_cosmo
7 Replies
5572 Views
Last post October 06, 2009, 1314 UTC
by Token
0 Replies
2635 Views
Last post April 13, 2009, 0822 UTC
by Scagnettie
4 Replies
2782 Views
Last post June 06, 2013, 0816 UTC
by BoomboxDX
0 Replies
2047 Views
Last post January 06, 2010, 2138 UTC
by outhouse radio
3 Replies
1730 Views
Last post November 30, 2018, 1815 UTC
by Looking-Glass
0 Replies
1640 Views
Last post April 10, 2012, 0006 UTC
by Kilokat7
6605 usb cw

Started by SIGINT

3 Replies
5024 Views
Last post February 27, 2015, 0131 UTC
by Token
6607.0 CW

Started by KG4ODX

2 Replies
2468 Views
Last post June 19, 2014, 0150 UTC
by KG4ODX

 

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