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
0 Replies
230 Views
Last post December 07, 2024, 1807 UTC
by N2MLP
0 Replies
228 Views
Last post November 23, 2024, 1529 UTC
by N2MLP
0 Replies
227 Views
Last post November 17, 2024, 1849 UTC
by N2MLP
1 Replies
226 Views
Last post March 11, 2025, 1428 UTC
by RadioMon
0 Replies
226 Views
Last post October 30, 2024, 1251 UTC
by R4002
0 Replies
223 Views
Last post February 06, 2025, 0635 UTC
by Robot Matrix
0 Replies
222 Views
Last post February 03, 2025, 2157 UTC
by R4002
0 Replies
219 Views
Last post December 31, 2024, 2219 UTC
by N2MLP
0 Replies
215 Views
Last post January 04, 2025, 1600 UTC
by RobRich
0 Replies
206 Views
Last post January 18, 2025, 1613 UTC
by N2MLP
0 Replies
204 Views
Last post February 21, 2025, 2008 UTC
by R4002
0 Replies
202 Views
Last post December 25, 2024, 1648 UTC
by N2MLP
0 Replies
199 Views
Last post January 04, 2025, 1849 UTC
by N2MLP
0 Replies
198 Views
Last post January 12, 2025, 1748 UTC
by N2MLP
0 Replies
195 Views
Last post January 20, 2025, 1407 UTC
by N2MLP
0 Replies
195 Views
Last post November 03, 2024, 1605 UTC
by N2MLP
0 Replies
194 Views
Last post March 02, 2025, 1610 UTC
by N2MLP
0 Replies
193 Views
Last post January 11, 2025, 1818 UTC
by N2MLP
0 Replies
187 Views
Last post January 04, 2025, 1822 UTC
by N2MLP
0 Replies
185 Views
Last post November 03, 2024, 1651 UTC
by prldx

 

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