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
2 Replies
107 Views
Last post October 13, 2025, 1306 UTC
by DXerKen
2 Replies
106 Views
Last post October 19, 2025, 0731 UTC
by Pravotorov
1 Replies
106 Views
Last post October 13, 2025, 2348 UTC
by Treehouse SWL
1 Replies
95 Views
Last post October 17, 2025, 1941 UTC
by RainBrandy
2 Replies
94 Views
Last post October 12, 2025, 0304 UTC
by DXerKen
0 Replies
92 Views
Last post October 11, 2025, 2237 UTC
by Radiouser
1 Replies
90 Views
Last post October 18, 2025, 1924 UTC
by Pravotorov
0 Replies
90 Views
Last post October 13, 2025, 1727 UTC
by Radiouser
0 Replies
87 Views
Last post October 11, 2025, 1118 UTC
by Radiouser
0 Replies
86 Views
Last post October 19, 2025, 0006 UTC
by Radiouser
1 Replies
75 Views
Last post October 18, 2025, 0241 UTC
by myteaquinn
0 Replies
57 Views
Last post October 19, 2025, 1915 UTC
by Radiouser
0 Replies
43 Views
Last post October 19, 2025, 1356 UTC
by Radiouser
0 Replies
30 Views
Last post October 19, 2025, 2339 UTC
by Radiouser
0 Replies
25 Views
Last post Today at 06:45
by DXerKen

 

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