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
6 Replies
7101 Views
Last post December 07, 2014, 0621 UTC
by Rafman
4 Replies
6866 Views
Last post October 03, 2017, 0224 UTC
by SV1XV
The Fast Forward Music Station on 16160 kHz

Started by 07code04stalker1776 « 1 2 »

17 Replies
6748 Views
Last post March 16, 2013, 1455 UTC
by Token
7 Replies
6472 Views
Last post July 25, 2010, 2013 UTC
by WrongwayCorrigan
9 Replies
6308 Views
Last post November 15, 2010, 0001 UTC
by SW-J
Aero action on 6640 KHz

Started by cmradio

1 Replies
6302 Views
Last post September 03, 2009, 0527 UTC
by MR. SHORTWAVE
Random bursts

Started by WrongwayCorrigan

5 Replies
6030 Views
Last post August 17, 2020, 2158 UTC
by sat_dxer
0 Replies
5942 Views
Last post June 14, 2008, 1217 UTC
by Zoidberg
10 Replies
5601 Views
Last post May 06, 2018, 1600 UTC
by Josh
5 Replies
5494 Views
Last post January 08, 2015, 1811 UTC
by DeltaCharlie
5 Replies
5425 Views
Last post August 04, 2013, 0004 UTC
by Token
8 Replies
5424 Views
Last post March 10, 2022, 1420 UTC
by NQC
4 Replies
5412 Views
Last post August 09, 2014, 0739 UTC
by Pigmeat
6916.5

Started by rdla4 « 1 2 »

16 Replies
5378 Views
Last post September 09, 2012, 2344 UTC
by Beerus Maximus
8 Replies
5367 Views
Last post November 15, 2010, 0018 UTC
by SW-J
MFSK around 6925

Started by Fansome

0 Replies
5355 Views
Last post March 22, 2008, 2307 UTC
by Fansome
15 Replies
5267 Views
Last post December 11, 2012, 2153 UTC
by nl12SDR
11 Replies
5208 Views
Last post August 19, 2017, 0307 UTC
by Looking-Glass
5 Replies
5200 Views
Last post April 16, 2013, 2022 UTC
by K5KNT
2 Replies
5158 Views
Last post September 10, 2019, 0544 UTC
by Exo

 

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