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.

Show Posts

This section allows you to view all posts made by this member. Note that you can only see posts made in areas you currently have access to.


Messages - ~SIGINT~

Pages: 1 ... 36 37 38 39 40 41 42 43 [44] 45 46 47 48 49 50 51 52 ... 252
646
Utility / Re: Coast Guard Weather Broadcast 12575.3 USB 30 JUL 2023
« on: July 30, 2023, 1600 UTC »
I would think that this is an anomaly. That portion of the band is allocated to maritime narrow-band direct-printing (NBDP) radioprinter and data transmissions.

12575.0 kHz (ch 31) and 12575.5 kHz (ch 32) are non-paired NBDP channels. Operating in any mode other than NBDP in this segment of the band would wipe-out several NBDP channels.

I am receiving some NBDP on 12575.5 kHz. Weak barely readable. Maritime NBDP is typically SITOR-FEC (aka SITOR-B) at a rate of 100 Baud using a standard shift of 170 Hz. I am giving Black Cat NAVTEX SITOR-B v1.0.0 a test run to see what I can decode on this channel. No luck so far.

80.361 Frequencies for narrow-band direct-printing (NBDP), radioprinter and data transmissions.
https://www.ecfr.gov/current/title-47/chapter-I/subchapter-D/part-80/subpart-H/subject-group-ECFRc6d6b33c0e67cb3/section-80.361

https://www.govinfo.gov/content/pkg/CFR-1998-title47-vol5/xml/CFR-1998-title47-vol5-sec80-361.xml


Here are the US Coast Guard Frequencies. They use 12579 for NBDP.

Marine Weather Broadcasts from the USCG
https://www.weather.gov/marine/uscg_broadcasts

647
North American Shortwave Pirate / Re: Sycko Radio 6950 AM 0200 UTC 30 JUL 2023
« on: July 30, 2023, 0338 UTC »
03:37 UTC - Weak unreadable with fading.

RSPduo | Wellbrook loop antenna

648
North American Shortwave Pirate / Re: Two Dog Radio 6925 USB 0244 UTC 30 JUL 2023
« on: July 30, 2023, 0336 UTC »
03:35 UTC - Weak unreadable, low into the noise.

RSPduo | Wellbrook loop antenna

649
Utility / HFGCS Force Directional Message (FDM) and Emergency Action Message (EAM) Log
« on: July 30, 2023, 0302 UTC »
HFGCS Force Directional Message (FDM) and Emergency Action Message (EAM) Log

Daily call sign for 30 July 2023: TEST PLUG (ground NCS), (airborne CP), (other)

300300Z JUL 2023 11175.0 kHz USB
03:00Z This is TEST PLUG standing by for traffic.

300330Z JUL 2023 11175.0 kHz USB
03:30Z This is TEST PLUG standing by for traffic.

650
Amateur Radio / Re: Is it normal to find USB ops at the top of region 2 40M band?
« on: July 30, 2023, 0212 UTC »
USB is also common for the "green" radio nets. Most "antique / vintage" military radios only had USB.

651
North American Shortwave Pirate / Re: WTF Radio Worldwide 6955 USB 0136 UTC 30 JUL 2023
« on: July 30, 2023, 0157 UTC »
01:57 UTC - Loud and clear with music;
02:00 UTC - Station ID: WTF Radio Worldwide
02:50 UTC - Sign-off interval signal;
02:51 UTC - End of broadcast.

RSPduo | Wellbrook loop antenna

652
North American Shortwave Pirate / Re: Thunder Chicken Radio 6950 USB 2119 UTC 29 JUL 2023
« on: July 30, 2023, 0156 UTC »
01:56 UTC - Weak unreadable with some music just above the noise floor.

RSPduo | Wellbrook loop antenna

653
Shortwave Broadcast / BBC E1C238 5875 DRM 0505 UTC 29 JUL 2023
« on: July 29, 2023, 0519 UTC »
BBC E1C238 5875.0 kHz DRM 05:05 UTC 29 JUL 2023

05:05 UTC - BBC in DRM mode. Only partial decode, some data, no audio. Good strong signal.




Note: I was able to decode some audio using a KiwiSDR and the DRM extension.

RSPduo | Wellbrook loop antenna

654
Utility / Den Helder Naval 6358.5 (CF) RTTY 0450 UTC 29 JUL 2023
« on: July 29, 2023, 0500 UTC »
Den Helder Naval (Netherlands) 6358.5 kHz (CF) RTTY 04:50 UTC 29 JUL 2023

04:50 UTC - Dutch Navy Den Helder Naval PBB, weak readable with RTTY message loop. Shift: 850 Baud: 75.

02A 04B 06A 08B 12A
02A 04B 06A 08B 12A PBB

RSPduo | Wellbrook loop antenna

655
Shortwave Broadcast / UNID 7375 AM 0445 UTC 29 JUL 2023
« on: July 29, 2023, 0450 UTC »
UNID 7375.0 kHz AM 04:45 UTC 29 JUL 2023

04:45 UTC - UNID; weak readable in the noise with jazz music;
04:48 UTC - Male announcer; too weak to ID language spoken. May be English.

RSPduo | Wellbrook loop antenna

656
Utility / Den Helder Naval 8439 (CF) RTTY 0425 UTC 29 JUL 2023
« on: July 29, 2023, 0439 UTC »
Den Helder Naval (Netherlands) 8439.0 kHz (CF) RTTY 04:25 UTC 29 JUL 2023

04:25 UTC - Dutch Navy Den Helder Naval PBB, weak readable with RTTY message loop. Shift: 850 Baud: 75.

02A 04B 06A 08B 12A
02A 04B 06A 08B 12A PBB

RSPduo | Wellbrook loop antenna

657
Peskies / UNID Peskies 8610 USB 0420 UTC 29 JUL 2029
« on: July 29, 2023, 0424 UTC »
UNID Peskies 8610.0 kHz USB 04:20 UTC 29 JUL 2029

04:20 UTC - A smorgasbord of Peskies speaking, whistling, yelling, playing music etc ...

RSPduo | Wellbrook loop antenna

658
Shortwave Broadcast / UNID 9670 AM 0405 UTC 29 JUL 2023
« on: July 29, 2023, 0411 UTC »
UNID 9670.0 kHz AM 04:05 UTC 29 JUL 2023

04:05 UTC - UNID; weak barely readable in the static/noise with music.
04:10 UTC - Male announcer speaking.

RSPduo | Barker & Williamson T2FD and Wellbrook loop antennae

659
Utility / Beacon SVO 12603.5 CW 0340 UTC 29 JUL 2023
« on: July 29, 2023, 0352 UTC »
Beacon SVO 12603.5 kHz CW 03:40 UTC 29 JUL 2023

03:40 UTC - SVO sending CW beacon ID: DE SVO; loud and clear.

RSPduo | Wellbrook loop antenna

660
Shortwave Broadcast / Ifrikya FM 13790 AM 0337 UTC 29 JUL 2023
« on: July 29, 2023, 0339 UTC »
Ifrikya FM 13790.0 kHz AM 03:37 UTC 29 JUL 2023

03:37 UTC - Ifrikya FM with Arabic program; good readable.

RSPduo | Wellbrook loop antenna

Pages: 1 ... 36 37 38 39 40 41 42 43 [44] 45 46 47 48 49 50 51 52 ... 252

Item image   Pirate Radio Stations - Tuning In To Underground Broadcasts by Andrew R. Yoder

 $24.95