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
4 Replies
884 Views
Last post December 28, 2020, 1816 UTC
by Traveling Wave
3 Replies
837 Views
Last post July 27, 2018, 0003 UTC
by refmo
15 Replies
2754 Views
Last post May 29, 2018, 1054 UTC
by ChrisSmolinski
5 Replies
1510 Views
Last post November 04, 2018, 0045 UTC
by kgb
1 Replies
621 Views
Last post October 19, 2023, 0145 UTC
by shadypyro
1 Replies
649 Views
Last post May 26, 2019, 1431 UTC
by ChrisSmolinski
0 Replies
319 Views
Last post February 09, 2025, 1738 UTC
by ChrisSmolinski
15 Replies
3482 Views
Last post October 06, 2018, 0322 UTC
by aurora
7 Replies
1742 Views
Last post August 06, 2017, 1546 UTC
by ChrisSmolinski
UNID 6965 AM 0137 UTC 12 May 2019

Started by bandarr3000

3 Replies
1016 Views
Last post May 12, 2019, 1554 UTC
by ChrisSmolinski
2 Replies
1227 Views
Last post September 05, 2015, 1718 UTC
by ByteBORG
0 Replies
741 Views
Last post June 29, 2014, 0356 UTC
by Rafman
0 Replies
547 Views
Last post June 01, 2021, 1417 UTC
by Chuck54
4 Replies
1015 Views
Last post November 22, 2020, 1857 UTC
by Bali_Frank
12 Replies
1400 Views
Last post January 23, 2022, 2157 UTC
by Orb
6 Replies
1674 Views
Last post October 11, 2015, 2155 UTC
by ByteBORG
1 Replies
1254 Views
Last post May 28, 2018, 2201 UTC
by Helicaster
0 Replies
379 Views
Last post January 12, 2023, 2207 UTC
by DangerKitty
4 Replies
1600 Views
Last post February 10, 2016, 0057 UTC
by ChrisSmolinski
1 Replies
971 Views
Last post August 05, 2019, 0030 UTC
by ulx2

 

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