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
3 Replies
547 Views
Last post February 13, 2023, 0404 UTC
by myteaquinn
4 Replies
4008 Views
Last post March 12, 2025, 1228 UTC
by Sealord
3 Replies
2261 Views
Last post June 02, 2025, 0429 UTC
by Professor
3 Replies
954 Views
Last post April 25, 2021, 0441 UTC
by myteaquinn
12 Replies
1372 Views
Last post September 18, 2021, 2332 UTC
by taschenrechner
14 Replies
2005 Views
Last post January 31, 2021, 2304 UTC
by MDK2
12 Replies
1744 Views
Last post January 30, 2022, 2134 UTC
by Edgar Souse
8 Replies
1397 Views
Last post December 19, 2021, 0030 UTC
by Andrew Yoder
2 Replies
3172 Views
Last post January 14, 2023, 0132 UTC
by Grizz489
16 Replies
2186 Views
Last post October 30, 2021, 0057 UTC
by refmo
6 Replies
1969 Views
Last post February 01, 2021, 1835 UTC
by myteaquinn
7 Replies
1017 Views
Last post December 06, 2021, 0019 UTC
by ear in the ether
4 Replies
848 Views
Last post April 23, 2022, 2321 UTC
by William Hassig
12 Replies
1479 Views
Last post August 08, 2022, 0215 UTC
by Shortwave_Listener
4 Replies
1704 Views
Last post September 13, 2010, 0320 UTC
by outhouse radio
4 Replies
791 Views
Last post February 26, 2023, 2206 UTC
by Markokpik
1 Replies
687 Views
Last post December 29, 2021, 0321 UTC
by WPE0ERM
4 Replies
682 Views
Last post February 27, 2023, 2009 UTC
by Evil Elvis
10 Replies
1303 Views
Last post February 20, 2022, 0421 UTC
by canswl
4 Replies
829 Views
Last post March 27, 2021, 0257 UTC
by KMD3HR

 

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