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
3991 Views
Last post June 16, 2019, 1825 UTC
by Josh
0 Replies
3450 Views
Last post July 05, 2019, 1710 UTC
by Josh
6 Replies
49906 Views
Last post August 11, 2019, 1800 UTC
by Josh
4 Replies
5679 Views
Last post August 19, 2019, 1847 UTC
by Rob.
0 Replies
2719 Views
Last post August 21, 2019, 1535 UTC
by ChrisSmolinski
0 Replies
2425 Views
Last post August 21, 2019, 1628 UTC
by ChrisSmolinski
0 Replies
23982 Views
Last post August 21, 2019, 2209 UTC
by ChrisSmolinski
5 Replies
3837 Views
Last post September 10, 2019, 0455 UTC
by RST111
2 Replies
4964 Views
Last post September 13, 2019, 0226 UTC
by Antennae
1 Replies
2728 Views
Last post September 14, 2019, 0046 UTC
by KaySeeks
0 Replies
1517 Views
Last post September 16, 2019, 1708 UTC
by RST111
Best SDR receiver under $75.00?

Started by Matt285

4 Replies
1952 Views
Last post October 22, 2019, 1837 UTC
by Josh
Grounding SDR receivers

Started by Matt285

4 Replies
2198 Views
Last post October 22, 2019, 1844 UTC
by Josh
5 Replies
4913 Views
Last post October 25, 2019, 1541 UTC
by MDK2
1 Replies
1763 Views
Last post November 01, 2019, 1910 UTC
by Josh
1 Replies
1726 Views
Last post December 14, 2019, 1817 UTC
by Brian
7 Replies
2123 Views
Last post December 17, 2019, 2017 UTC
by chanito
4 Replies
6865 Views
Last post December 17, 2019, 2148 UTC
by chanito
6 Replies
2922 Views
Last post December 17, 2019, 2152 UTC
by chanito
SDR question

Started by Matt285

1 Replies
1361 Views
Last post December 21, 2019, 1632 UTC
by Josh

 

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