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.


No New Posts North American Shortwave Pirate

Loggings of North American Pirate Stations

Moderators: Beerus Maximus, Zane, Sealord, Kilokat7, Ray Lalleu, DimBulb, refmo, clobdell, Skipmuck, PirateSWL

187944 Posts
31828 Topics

Last post by ~SIGINT~
in Re: UNID 6960 USB 0113 U...
on Today at 01:55

Child Boards: Broadcast Announcements
No New Posts European Pirates and Private Stations

Loggings of Europirates as well as the licensed low power / hobby European shortwave broadcast stations

Moderators: Beerus Maximus, Ray Lalleu, DimBulb, clobdell, Skipmuck, Shortwave_Listener

68845 Posts
35392 Topics

Last post by kris
in UNID 6290 AM 0824 UTC 29...
on Today at 08:26

No New Posts Latin American Pirate

Loggings of pirate radio stations from Central and South America

Moderators: Ray Lalleu, Skipmuck

2403 Posts
1148 Topics

Last post by dxace1
in Re: UNID 6934.9 AM 2335 ...
on February 28, 2024, 0007 UTC

No New Posts North American MW Pirate Radio

North American AM/MW Free Radio Station Loggings

Moderators: Ray Lalleu, Skipmuck, Shortwave_Listener

1814 Posts
653 Topics

Last post by dxwingr
in UNID 1620AM 0058UTC 27 ...
on February 28, 2024, 0100 UTC

No New Posts European MW Pirate Radio

European AM/MW Free Radio Station Loggings

Moderators: Ray Lalleu, Skipmuck, Shortwave_Listener

2590 Posts
2110 Topics

Last post by n2avh
in Re: UNID (SR) 1715 AM 21...
on February 28, 2024, 2206 UTC

No New Posts FM Free Radio

FM Free Radio Station Loggings

454 Posts
119 Topics

Last post by ROKFRED
in Re: What happened to 107...
on July 03, 2023, 1629 UTC

No New Posts HF Beacons

Loggings of the various unlicensed shortwave beacon stations

Moderators: Token, Kilokat7, Teotwaki

9382 Posts
1345 Topics

Last post by mark-n-nut
in Re: S
on February 28, 2024, 1710 UTC

No New Posts Fishing Drift Net Beacons

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

341 Posts
80 Topics

Last post by Looking-Glass
in Re: DNB logs for Februar...
on February 17, 2024, 1105 UTC

No New Posts 22 Meter Band HiFER Beacons

Loggings of HiFER Part 15 Beacons

Moderator: tesla

1219 Posts
351 Topics

Last post by HQ180
in Re: VUDU
on Today at 03:26

No New Posts Spy Numbers

Loggings of Spy Numbers Stations

Moderator: Token

4982 Posts
1624 Topics

Last post by MDK2
in Re: HM01 sched.Feb 0700 ...
on Today at 05:02

No New Posts Shortwave Broadcast

Loggings of SWBC Stations

Moderators: skeezix, Ray Lalleu, Skipmuck

13879 Posts
7612 Topics

Last post by Paul65
in Re: Rádio Inconfidência ...
on February 28, 2024, 2253 UTC

No New Posts Clandestine Stations

Worldwide Loggings of and information about Clandestine Stations

Moderator: fpeconsultant

1496 Posts
675 Topics

Last post by MDK2
in Re: Sound of Hope (Taiwa...
on February 27, 2024, 1404 UTC

No New Posts Longwave Loggings

Loggings of Longwave Stations

Moderators: skeezix, jFarley, Chanter

1776 Posts
380 Topics

Last post by NJQA
in Re: eLORAN Tests 1250 UT...
on February 11, 2024, 1414 UTC

No New Posts DGPS

DGPS related messages - loggings and software

Moderator: skeezix

5289 Posts
3868 Topics

Last post by skeezix
in DGPS Logs February 27 20...
on February 28, 2024, 1422 UTC

No New Posts MW Loggings

Loggings of MW Stations

Moderators: skeezix, Kilokat7

3431 Posts
1105 Topics

Last post by n2avh
in WJFV 1650 AM in Sweden 0...
on Today at 01:32

No New Posts Utility

Loggings of Utility Stations

Moderator: Beerus Maximus

6822 Posts
1996 Topics

Last post by ~SIGINT~
in Trenton Military General...
on February 28, 2024, 1434 UTC

No New Posts WEFAX and SSTV

Loggings of WEFAX and non pirate SSTV transmissions. Images welcome!

Moderator: Skipmuck

436 Posts
168 Topics

Last post by fpeconsultant
in Re: GYA-Northwood UK 804...
on February 20, 2024, 2352 UTC

No New Posts 10/11 meters

Loggings of licensed and unlicensed stations on 10 and 11 meters

Moderators: thechoat, R4002

2823 Posts
1076 Topics

Last post by R4002
in Re: 26.765 MHz AM Taxi R...
on February 28, 2024, 2021 UTC

No New Posts FM DX Loggings

Loggings of FM DX Stations

139 Posts
55 Topics

Last post by RobRich
in FM DX Propagation 31 JAN...
on February 01, 2024, 0022 UTC

No New Posts TV DX Loggings

Logs of TV DX stations - screencaps welcome

58 Posts
8 Topics

Last post by uhf35
in Re: TV DXing from the tr...
on February 26, 2024, 1724 UTC

No New Posts VHF/UHF Logs, including satellites and radiosondes

Post anything above 30 MHz, other than Ham, FM and TV, here

1559 Posts
224 Topics

Last post by R4002
in 33.400 MHz Russian Milit...
on February 23, 2024, 1349 UTC

No New Posts Other

Loggings of Other Stations

3901 Posts
1370 Topics

Last post by Mick Boyle
in UNID 690 AM Pittsburgh P...
on February 26, 2024, 1756 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

1962 Posts
1252 Topics

Last post by HF DXER
in 10.542 USB at 02:18 UTC ...
on February 23, 2024, 0221 UTC

No New Posts HF Mystery Signals

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

Moderator: Token

1238 Posts
290 Topics

Last post by Token
in MOVED: 6.220 Mhz CW Plea...
on Today at 08:01

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

336 Posts
116 Topics

Last post by SWLhacker
in Re: UNID 1647 AM 1302...
on February 19, 2024, 1519 UTC

Technical Topics

No New Posts Equipment

Radios and Antenna Discussions

Moderator: corq

7332 Posts
925 Topics

Last post by dxace1
in Re: Radio Jay Allen chec...
on Today at 03:59

No New Posts Part 15 AM and FM Station Operation

Discussions related to legal Part 15 AM and FM station operation

313 Posts
60 Topics

Last post by ThaDood
on February 10, 2024, 1940 UTC

No New Posts Propagation

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

446 Posts
104 Topics

Last post by kris
in Solar flares 28 JAN 2024
on January 28, 2024, 2217 UTC

No New Posts SDR - Software Defined Radio

Software Defined Radio discussions

1516 Posts
296 Topics

Last post by RobRich
in Re: KiwiSDR 2 Now Availa...
on February 24, 2024, 0439 UTC

No New Posts The RF Workbench

RF construction projects

Moderator: ff

2552 Posts
275 Topics

Last post by Albert H
in Re: U-LULU (Updated LULU...
on February 21, 2024, 2232 UTC

No New Posts Software

Radio Related Software

669 Posts
203 Topics

Last post by ChrisSmolinski
in Black Cat ALE Vacuum Cle...
on February 21, 2024, 2200 UTC

General Category

No New Posts General Radio Discussion

Miscellaneous radio related topics.

16981 Posts
4276 Topics

Last post by Oliver
in Charleston Radio interna...
on February 28, 2024, 2011 UTC

No New Posts Amateur Radio

Amateur / Ham Radio related discussions

1075 Posts
228 Topics

Last post by ThaDood
in Re: AM Rally This weeken...
on February 05, 2024, 1939 UTC

No New Posts QSLs Received

Post pictures and other details of QSLs and eQSLs here

Moderators: Sealord, PirateSWL

12844 Posts
5060 Topics

Last post by ChrisSmolinski
on February 27, 2024, 1523 UTC

No New Posts Pirate Radio History

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

Moderator: PirateSWL

196 Posts
43 Topics

Last post by Big Badfish Al
in Re: "Mexican Food" stati...
on August 21, 2023, 2052 UTC

No New Posts For Sale / Wanted / Barter

Radio related items for sale, or wanted, or trade/barter - clear out your old junk and get new junk!

445 Posts
131 Topics

Last post by ChrisSmolinski
in For sale - Vicor FlatPac...
on January 22, 2024, 1758 UTC

No New Posts Huh?

The DX is under g0pher's table

6541 Posts
1355 Topics

Last post by Traveling Wave
in Re: A look at a long-tim...
on February 27, 2024, 1828 UTC

No New Posts Group W Bench

Misfit posts

199 Posts
99 Topics

Last post by ChrisSmolinski
in Re: Thunderchicken Radio...
on September 30, 2023, 1305 UTC

No New Posts Weather

Everybody complains about the weather, but nobody does anything about it

192 Posts
45 Topics

Last post by ThaDood
in MLK, jr Week good for lo...
on January 11, 2024, 2131 UTC

No New Posts Bacon, BBQ, Beef, And More

Tasty LCHF/Paleo/Keto foods for the radio enthusiast

991 Posts
203 Topics

Last post by ChrisSmolinski
in Re: Oven Roasted Chicken...
on February 19, 2024, 1832 UTC

  • No New Posts
  • Redirect Board

HFU HF Underground - Info Center

Forum Stats Forum Stats

378912 Posts in 108974 Topics by 6315 Members. Latest Member: Harold Sellers
Latest Post: "UNID 6290 AM 0824 UTC 29..." ( Today at 08:26 )
View the most recent posts on the forum.
[More Stats]

Users Online Users Online

98 Guests, 1 User

Users active in past 15 minutes:

Most Online Today: 160. Most Online Ever: 3935 (April 02, 2020, 1625 UTC)

Item image   The ARRL Antenna Book 13th Edition