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 permissable in your locale.


No New Posts Shortwave Pirate

Loggings of North American Pirate Stations

Moderators: Beerus Maximus, Zane, Sealord, Rafman, Kilokat7, DimBulb, jFarley, refmo, Chris Lobdell, Skipmuck, ByteBORG, JoeFLIPS, PirateSWL

100400 Posts
19965 Topics

Last post by ChrisSmolinski
in Re: UNID 6925 AM 1840 UT...
on Today at 20:03

Child Boards: Broadcast Announcements
No New Posts European Pirate

Loggings of Europirates

Moderators: Beerus Maximus, Ray Lalleu, DimBulb, Chris Lobdell, Skipmuck, JoeFLIPS

12891 Posts
6007 Topics

Last post by Ray Lalleu
in Re: UKrainian pirate 705...
on Today at 20:23

No New Posts Latin American Pirate

Loggings of pirate radio stations from Central and South America

976 Posts
519 Topics

Last post by Daniel Wyllyans
in Rádio Cidadeoldies 13560...
on March 17, 2019, 2359 UTC

No New Posts MW Free Radio

AM/MW Free Radio Station Loggings

429 Posts
166 Topics

Last post by kris
in Re: UNID GR 1700 AM 2155...
on March 20, 2019, 1758 UTC

No New Posts FM Free Radio

FM Free Radio Station Loggings

314 Posts
72 Topics

Last post by Skipmuck
in Re: RADIO RONAN 91.9 in ...
on March 10, 2019, 1202 UTC

No New Posts HF Beacons

Loggings of the various unlicensed shortwave beacon stations

Moderators: Token, Kilokat7, Teotwaki

6009 Posts
1164 Topics

Last post by sat_dxer
in Re: Russian MX beacons l...
on Today at 14:39

No New Posts Fishing Drift Net Beacons

CW Beacons used to identify and locate drift nets used by fishermen

107 Posts
12 Topics

Last post by Strange Beacons
in Please post your log det...
on Today at 18:27

No New Posts 22 Meter Band

Loggings of HiFER Part 15 Beacons

Moderator: tesla

570 Posts
124 Topics

Last post by DYGradio
in Re: NDB2 13554.0 khz
on March 03, 2019, 2154 UTC

No New Posts Spy Numbers

Loggings of Spy Numbers Stations

Moderator: Token

3067 Posts
1236 Topics

Last post by kalvados
in Re: Log S06 15721 march ...
on Today at 04:18

No New Posts Shortwave Broadcast

Loggings of SWBC Stations

Moderators: skeezix, Skipmuck

7165 Posts
3893 Topics

Last post by ChrisSmolinski
in Re: Unid 6900.5 AM 2225 ...
on Today at 15:46

No New Posts Clandestine Stations

Worldwide Loggings of and information about Clandestine Stations

Moderator: fpeconsultant

966 Posts
433 Topics

Last post by fpeconsultant
in Re: Clandestine B18 upda...
on March 07, 2019, 1849 UTC

No New Posts Longwave Loggings

Loggings of Longwave Stations

Moderators: skeezix, jFarley, Chanter

1120 Posts
219 Topics

Last post by pinto vortando
in Re: Take Off to the Grea...
on March 17, 2019, 2024 UTC

No New Posts DGPS

DGPS related messages - loggings and software

Moderator: skeezix

2430 Posts
1599 Topics

Last post by ChrisSmolinski
in DGPS Logs 21-22 Mar 2019
on Today at 13:51

No New Posts MW Loggings

Loggings of MW Stations

Moderators: skeezix, Kilokat7

1663 Posts
602 Topics

Last post by sat_dxer
in Re: Japan log till end o...
on Today at 12:25

No New Posts Utility

Loggings of Utility Stations

Moderator: Beerus Maximus

2905 Posts
1102 Topics

Last post by Josh
in Re: 11175 USB
on Today at 19:30

No New Posts 10/11 meters

Loggings of licensed and unlicensed stations on 10 and 11 meters

Moderators: thechoat, R4002

1162 Posts
477 Topics

Last post by R4002
in Re: 27565 USB Portuguese...
on March 19, 2019, 1205 UTC

No New Posts FM DX Loggings

Loggings of FM DX Stations

98 Posts
35 Topics

Last post by Ct Yankee
in Season's Greetings WHUS ...
on February 16, 2019, 0025 UTC

No New Posts TV DX Loggings

Logs of TV DX stations - screencaps welcome

45 Posts
5 Topics

Last post by MDK2
in Re: A6 negative offset,...
on September 07, 2018, 1508 UTC

No New Posts Satellite, Radiosondes and Other VHF/UHF Signals

Receiving and tracking radiosondes (weather balloons), satellites, and other VHF/UHF signals

670 Posts
72 Topics

Last post by sat_dxer
in Re: UHF mil air
on Today at 19:06

No New Posts Other

Loggings of Other Stations

2840 Posts
959 Topics

Last post by kris
in Yunik R. 3731 LSB 0014 U...
on March 19, 2019, 0022 UTC

No New Posts Peskies

Fishermen? Drug runners? Or just folks with radios talking in an unlicensed fashion within unconventional bands? The HFU decides

Moderators: R4002, aquabat

1282 Posts
920 Topics

Last post by kris
in 6229 USB peskies 0014 UT...
on March 20, 2019, 0026 UTC

No New Posts HF Mystery Signals

Unidentified modes - Hearing a digital mode you need help identifying? This is the place

Moderator: Token

646 Posts
131 Topics

Last post by TheRelayStation
in an oddity centered at 46...
on March 10, 2019, 0003 UTC

No New Posts ID and Translation Requests

Got a station you can't ID, or need a translation? Post a link to a recording here

173 Posts
57 Topics

Last post by Brian
in Re: unknown station 6215...
on February 22, 2019, 1851 UTC

Technical Topics

No New Posts Equipment

Radios and Antenna Discussions

Moderator: corq

4012 Posts
552 Topics

Last post by ChrisSmolinski
in Re: Questions CB and TX ...
on Today at 20:07

No New Posts Propagation

Much like the weather, everybody complains about propagation, but nobody does anything about it.

150 Posts
41 Topics

Last post by ChrisSmolinski
in Re: Solar Activity, or l...
on March 21, 2019, 1515 UTC

No New Posts SDR - Software Defined Radio

Software Defined Radio discussions

870 Posts
176 Topics

Last post by Josh
in New SDRuno vailable
on March 15, 2019, 1816 UTC

No New Posts The RF Workbench

RF construction projects

Moderator: ff

1398 Posts
141 Topics

Last post by Stretchyman
in Re: Passive Squelch Circ...
on March 12, 2019, 0707 UTC

No New Posts Software

Radio Related Software

426 Posts
127 Topics

Last post by Josh
in SDRplay Spectrum Analyze...
on Today at 17:18

General Category

No New Posts General Radio Discussion

Miscellaneous radio related topics.

13270 Posts
3469 Topics

Last post by JimIO
in Re: GPS Network May Expe...
on Today at 02:38

No New Posts Amateur Radio

Amateur / Ham Radio related discussions

21 Posts
3 Topics

Last post by Josh
in Re: Amateur radio
on Today at 20:13

No New Posts QSLs Received

Post pictures and other details of QSLs and eQSLs here

Moderator: Sealord

6783 Posts
2711 Topics

Last post by ChrisSmolinski
in Dance Radio Internationa...
on March 21, 2019, 2250 UTC

No New Posts Pirate Radio History

A place to post historical articles and QSLs, links to audio files, etc.

Moderator: PirateSWL

23 Posts
9 Topics

Last post by MrMomB (LED)
in Re: NPR audio article on...
on March 09, 2019, 2125 UTC

No New Posts For Sale / Wanted

Radio related items for sale, or wanted

187 Posts
61 Topics

Last post by Stretchyman
in Re: 5 to 10 watts AM bro...
on March 16, 2019, 0952 UTC

No New Posts Huh?

The DX is under g0pher's table

4753 Posts
945 Topics

Last post by Josh
in Re: Majority of bitcoin ...
on Today at 20:09

No New Posts Bacon, BBQ, Beef, And More

Tasty LCHF/Paleo/Keto foods for the radio enthusiast

477 Posts
83 Topics

Last post by Josh
in Re: High-fructose corn s...
on Today at 17:07

  • No New Posts
  • Redirect Board

HFU HF Underground - Info Center

Forum Stats Forum Stats

181044 Posts in 48423 Topics by 3280 Members. Latest Member: CarlosLessa
Latest Post: "Re: UKrainian pirate 705..." ( Today at 20:23 )
View the most recent posts on the forum.
[More Stats]

Users Online Users Online

196 Guests, 6 Users (1 Hidden)

Users active in past 15 minutes:
Ray Lalleu, michaeltylerwv, TheRelayStation, Radio Star, Treehouse SWL

Most Online Today: 216. Most Online Ever: 363 (October 25, 2018, 1540 UTC)