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
9 Replies
604 Views
Last post October 17, 2025, 0009 UTC
by myteaquinn
9 Replies
1023 Views
Last post October 19, 2025, 1538 UTC
by N2MLP
9 Replies
4163 Views
Last post November 24, 2013, 1932 UTC
by Mentholyptus
9 Replies
1484 Views
Last post February 12, 2022, 2326 UTC
by MDK2
9 Replies
2542 Views
Last post October 10, 2017, 2336 UTC
by Laidbackdx
9 Replies
1267 Views
Last post August 09, 2024, 2208 UTC
by N2MLP
9 Replies
3608 Views
Last post November 25, 2013, 0059 UTC
by fpeconsultant
9 Replies
1281 Views
Last post March 28, 2023, 0050 UTC
by Markokpik
9 Replies
2093 Views
Last post September 18, 2016, 0040 UTC
by ChrisLobdell
9 Replies
1814 Views
Last post October 11, 2017, 1643 UTC
by ChrisSmolinski
9 Replies
6884 Views
Last post November 27, 2013, 2335 UTC
by Rockpicker
9 Replies
829 Views
Last post July 27, 2024, 0020 UTC
by Markokpik
9 Replies
3354 Views
Last post November 28, 2013, 1645 UTC
by Mentholyptus
9 Replies
3894 Views
Last post November 30, 2013, 0042 UTC
by Markokpik
9 Replies
1344 Views
Last post April 03, 2023, 0043 UTC
by myteaquinn
9 Replies
1535 Views
Last post April 08, 2023, 0156 UTC
by PirateSWL
9 Replies
1154 Views
Last post April 02, 2023, 0225 UTC
by WPE6HET
9 Replies
2522 Views
Last post December 01, 2013, 1706 UTC
by Sealord
9 Replies
2880 Views
Last post September 23, 2016, 2324 UTC
by early
9 Replies
1030 Views
Last post April 08, 2023, 2339 UTC
by Pigmeat

 

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