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
2135 Views
Last post September 09, 2017, 0039 UTC
by ChrisSmolinski
0 Replies
562 Views
Last post December 14, 2017, 1409 UTC
by ChrisSmolinski
6 Replies
1572 Views
Last post September 02, 2017, 0030 UTC
by Helicaster
8 Replies
1458 Views
Last post September 04, 2017, 0117 UTC
by Andrew Yoder
0 Replies
493 Views
Last post December 18, 2017, 1208 UTC
by ChrisSmolinski
0 Replies
645 Views
Last post September 02, 2017, 1500 UTC
by ChrisSmolinski
0 Replies
590 Views
Last post September 02, 2017, 1629 UTC
by ChrisSmolinski
0 Replies
607 Views
Last post September 02, 2017, 2012 UTC
by ChrisSmolinski
1 Replies
629 Views
Last post January 01, 2018, 2053 UTC
by aurora
3 Replies
1556 Views
Last post September 03, 2017, 1045 UTC
by Stretchyman
4 Replies
2377 Views
Last post September 06, 2017, 1224 UTC
by switchblade
2 Replies
1085 Views
Last post September 01, 2017, 1610 UTC
by MDK2
4 Replies
1053 Views
Last post December 31, 2017, 1700 UTC
by KaySeeks
4 Replies
809 Views
Last post October 22, 2019, 2150 UTC
by PirateSWL
5 Replies
762 Views
Last post July 17, 2021, 0026 UTC
by Big Badfish Al
12 Replies
403 Views
Last post February 09, 2025, 2112 UTC
by ChrisSmolinski
13 Replies
591 Views
Last post February 16, 2025, 1805 UTC
by ChrisSmolinski
16 Replies
1276 Views
Last post February 18, 2023, 2317 UTC
by Davep
12 Replies
1108 Views
Last post February 08, 2023, 2350 UTC
by Shortwave_Listener
18 Replies
1766 Views
Last post June 08, 2024, 0132 UTC
by DCtoLight

 

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