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
11m Activity 7 NOV 2021

Started by Elf36

2 Replies
814 Views
Last post November 07, 2021, 1455 UTC
by Elf36
0 Replies
683 Views
Last post February 12, 2024, 1429 UTC
by ENG075
21 Replies
17436 Views
Last post July 15, 2019, 1904 UTC
by R4002
Mobitex 1200

Started by fe8769

1 Replies
800 Views
Last post September 18, 2024, 1744 UTC
by R4002
0 Replies
892 Views
Last post September 19, 2024, 1603 UTC
by fe8769
25.860 Anyone?

Started by ff

6 Replies
6079 Views
Last post March 17, 2014, 1956 UTC
by radiogaga
7 Replies
2995 Views
Last post May 06, 2018, 0130 UTC
by FFM
5 Replies
4882 Views
Last post December 11, 2017, 1345 UTC
by R4002
3 Replies
2051 Views
Last post February 19, 2018, 2136 UTC
by Pigmeat
0 Replies
769 Views
Last post March 06, 2022, 1839 UTC
by flexoman61
0 Replies
1231 Views
Last post November 03, 2015, 1802 UTC
by flexoman61
5 Replies
5204 Views
Last post September 13, 2016, 2011 UTC
by EliteData
0 Replies
2795 Views
Last post October 02, 2016, 1817 UTC
by flexoman61
3 Replies
7287 Views
Last post August 02, 2015, 1601 UTC
by flexoman61
2 Replies
1612 Views
Last post June 09, 2019, 1615 UTC
by Brian
0 Replies
2168 Views
Last post January 21, 2017, 1735 UTC
by flexoman61
1 Replies
1786 Views
Last post October 04, 2015, 1742 UTC
by ChrisSmolinski
0 Replies
2578 Views
Last post February 19, 2017, 1547 UTC
by flexoman61
1 Replies
2334 Views
Last post October 09, 2015, 1749 UTC
by ChrisSmolinski
0 Replies
1110 Views
Last post April 12, 2017, 1946 UTC
by flexoman61

 

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