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
2 Replies
1365 Views
Last post May 20, 2022, 2228 UTC
by Intruder
2 Replies
1637 Views
Last post February 19, 2021, 1255 UTC
by ChrisSmolinski
2 Replies
2306 Views
Last post November 05, 2017, 2130 UTC
by redhat
2 Replies
3537 Views
Last post May 08, 2019, 1320 UTC
by Teotwaki
1 Replies
4074 Views
Last post January 03, 2015, 2349 UTC
by Beerus Maximus
1 Replies
1506 Views
Last post December 31, 2020, 1847 UTC
by ChrisSmolinski
1 Replies
1574 Views
Last post December 08, 2020, 1817 UTC
by syfr
1 Replies
1482 Views
Last post March 22, 2021, 0022 UTC
by Andrew Yoder
1 Replies
1605 Views
Last post February 17, 2020, 2146 UTC
by R4002
1 Replies
1396 Views
Last post December 27, 2019, 2002 UTC
by ThaDood
NAV-FAX 200 receiver AM/USB/CW

Started by Matt285

1 Replies
1326 Views
Last post February 08, 2020, 1431 UTC
by Matt285
1 Replies
1768 Views
Last post April 01, 2022, 1345 UTC
by olddxer
SDR IQ

Started by fpeconsultant

1 Replies
6122 Views
Last post May 21, 2016, 0134 UTC
by Broadwing56
1 Replies
2003 Views
Last post September 09, 2023, 1552 UTC
by Teotwaki
1 Replies
1055 Views
Last post April 13, 2022, 0319 UTC
by redhat
1 Replies
3299 Views
Last post February 10, 2019, 1249 UTC
by Rob.
1 Replies
1507 Views
Last post September 14, 2022, 0105 UTC
by Zoidberg
1 Replies
2146 Views
Last post January 08, 2019, 1613 UTC
by CoolAM Radio
1 Replies
3539 Views
Last post December 11, 2017, 1347 UTC
by R4002
1 Replies
2096 Views
Last post February 23, 2018, 0758 UTC
by Stretchyman

 

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