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
11317 Views
Last post August 03, 2014, 2230 UTC
by Andrew Yoder
1 Replies
4203 Views
Last post January 03, 2015, 2349 UTC
by Beerus Maximus
0 Replies
5735 Views
Last post March 16, 2015, 2046 UTC
by sat_dxer
Wanted: SDR

Started by ak7v

0 Replies
6192 Views
Last post May 12, 2015, 1618 UTC
by ak7v
0 Replies
3591 Views
Last post November 20, 2015, 1940 UTC
by Ranch Jones
R71A

Started by SHORTY

3 Replies
4949 Views
Last post March 24, 2016, 0101 UTC
by BDM
3 Replies
6313 Views
Last post April 03, 2016, 0156 UTC
by ecal
SDR IQ

Started by fpeconsultant

1 Replies
6250 Views
Last post May 21, 2016, 0134 UTC
by Broadwing56
0 Replies
3157 Views
Last post June 10, 2016, 2218 UTC
by SkyWalker
3 Replies
3303 Views
Last post August 17, 2016, 1537 UTC
by MDK2
11 Replies
22518 Views
Last post September 08, 2016, 0556 UTC
by redhat
4 Replies
8630 Views
Last post February 22, 2017, 1817 UTC
by Stretchyman
0 Replies
1960 Views
Last post July 10, 2017, 2330 UTC
by sat_dxer
1 Replies
2765 Views
Last post July 22, 2017, 1619 UTC
by HulkSmash
1 Replies
2915 Views
Last post July 23, 2017, 1315 UTC
by HulkSmash
1 Replies
3501 Views
Last post July 28, 2017, 1335 UTC
by Pigmeat
0 Replies
3548 Views
Last post August 19, 2017, 2308 UTC
by ChrisLobde
0 Replies
1837 Views
Last post October 10, 2017, 2344 UTC
by Laidbackdx
2 Replies
2479 Views
Last post November 05, 2017, 2130 UTC
by redhat
7 Replies
4783 Views
Last post November 09, 2017, 1839 UTC
by bandarr3000

 

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