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
1859 Views
Last post May 01, 2023, 0047 UTC
by ~SIGINT~
7 Replies
3129 Views
Last post May 01, 2023, 0049 UTC
by ~SIGINT~
2 Replies
1798 Views
Last post January 09, 2017, 0117 UTC
by BDM
0 Replies
632 Views
Last post October 07, 2022, 0239 UTC
by AbnersFarm
1 Replies
1372 Views
Last post January 31, 2020, 2259 UTC
by Josh
5 Replies
1808 Views
Last post December 28, 2022, 2043 UTC
by ~SIGINT~
1 Replies
1123 Views
Last post August 18, 2024, 1043 UTC
by UtilitySeattle
3 Replies
2601 Views
Last post October 24, 2019, 2307 UTC
by Treehouse SWL
0 Replies
1066 Views
Last post August 19, 2020, 0528 UTC
by Treehouse SWL
0 Replies
2001 Views
Last post February 20, 2016, 2013 UTC
by flexoman61
0 Replies
87 Views
Last post November 19, 2025, 2310 UTC
by Dornick
1 Replies
3261 Views
Last post October 03, 2017, 0916 UTC
by Looking-Glass
0 Replies
1384 Views
Last post May 05, 2017, 0323 UTC
by flexoman61
14 Replies
8491 Views
Last post May 08, 2013, 1354 UTC
by ka1iic
0 Replies
2047 Views
Last post June 18, 2016, 1256 UTC
by sat_dxer
0 Replies
1266 Views
Last post April 15, 2017, 0330 UTC
by R4002
0 Replies
1484 Views
Last post March 28, 2014, 0803 UTC
by FFZ
CW on 11175 kHz

Started by IZ5PQT

3 Replies
6324 Views
Last post April 10, 2015, 1403 UTC
by Token
4 Replies
3675 Views
Last post August 12, 2017, 0645 UTC
by Looking-Glass
5 Replies
4716 Views
Last post April 05, 2025, 1848 UTC
by nullco

 

Normal Topic
Hot Topic (More than 15 replies)
Very Hot Topic (More than 25 replies)

Locked Topic
Sticky Topic
Poll


HFUnderground Mug
HFUnderground Mug
by MitchellTimeDesigns