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
48 Views
Last post November 24, 2025, 2219 UTC
by Kestrel
0 Replies
2392 Views
Last post February 20, 2012, 2120 UTC
by ETM71
0 Replies
2804 Views
Last post February 04, 2012, 0856 UTC
by Zoidberg
0 Replies
1411 Views
Last post March 10, 2013, 1558 UTC
by skeezix
0 Replies
2850 Views
Last post January 28, 2012, 0215 UTC
by weaksigs
0 Replies
2738 Views
Last post January 21, 2012, 1617 UTC
by ETM71
0 Replies
2842 Views
Last post January 10, 2012, 0218 UTC
by jFarley
0 Replies
2613 Views
Last post June 16, 2012, 2338 UTC
by skeezix
0 Replies
2889 Views
Last post December 14, 2011, 0437 UTC
by jFarley
0 Replies
3325 Views
Last post November 29, 2011, 0307 UTC
by jFarley
What's with China on 49M?

Started by cmradio

0 Replies
3092 Views
Last post November 16, 2011, 1236 UTC
by cmradio
0 Replies
2885 Views
Last post November 15, 2011, 0309 UTC
by jFarley
0 Replies
2239 Views
Last post February 17, 2013, 0132 UTC
by Chanter
0 Replies
1686 Views
Last post February 23, 2013, 2025 UTC
by Sealord
0 Replies
2550 Views
Last post May 28, 2012, 1312 UTC
by skeezix
0 Replies
2549 Views
Last post May 27, 2012, 1620 UTC
by skeezix
two catches

Started by Nella F.

0 Replies
2159 Views
Last post January 29, 2013, 0255 UTC
by Nella F.
0 Replies
2132 Views
Last post December 30, 2012, 1748 UTC
by jc1974
0 Replies
2927 Views
Last post October 02, 2011, 0144 UTC
by jFarley
0 Replies
3009 Views
Last post October 01, 2011, 0307 UTC
by jFarley

 

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