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.

Author Topic: UNID FEC 16805 USB 21:00 UTC 27 Nov 2022  (Read 133 times)

Offline UtilitySeattle

  • Jr. Member
  • **
  • Posts: 99
  • Snohomish County Washington USA
    • View Profile
    • Email
UNID FEC 16805 USB 21:00 UTC 27 Nov 2022
« on: November 27, 2022, 2152 UTC »
Sea ice warnings and sundry navarea notes in spanish and english. Mention of ARGENTINE HYDROGRAPHIC NAVAL SERVICE and giving a Chilean country code phone and email.

TE: +56-61-2624228/2621273
FAX: +56-61-2621160
E-MAIL__SCPUERTOWIWLLL_STDIRECTEMAR.CL

Puerto Williams is a Chilean Naval base so maybe this is Chilean Military/Coast Guard?

I find no listings for this frequency. Off abruptly at 21:40 UTC
SDRPlay RSP-2 pro  G5RV Snohomish County Washington USA CN87

Offline tiNG

  • Full Member
  • ***
  • Posts: 102
  • JO44QO
  • DX since 1976
    • ICQ Messenger - 144821677
    • View Profile
    • German UTDX-Forum (entirely German...)
Re: UNID FEC 16805 USB 21:00 UTC 27 Nov 2022
« Reply #1 on: November 28, 2022, 0908 UTC »
Hi.

16805,0 kHz is irritating, as you cauhgt an FSK modulated signal. The central frequency for that is 16804,5 kHz and it is a well known DSC-channel in the maritime mobile service.

There are many stations from Chile listed there but I'd guess it is either Antofagasta Zonal Radio (CBA) or Valparaiso Playa Ancha Radio (CBV). A very hot catch could be Bahia Fildes Radio (CBZ22) from the Antarctic (-62.196342, -58.959383 / GC07MT).

Looking on Argentine there are the following stations on 16804,5:

  • Buenos Aires Prefectura Naval Radio   L2G
  • Mar del Plata Prefectura Naval Radio   L2U
  • Comodoro Rivadavia Prefectura Naval Radio   L3B
  • Ushuaia Prefectura Naval Radio   L3P
  • Argentina Radio   LSD836
(Source: Admirality LIst of Radio Signals, ITU, IMO GISIS)

On the other hand there is NAVTEX-traffic on 16806,5 kHz but I have no stations from Chile listed there. But from Argentine there are tow entries in my database:

  • Buenos Aires Prefectura Naval Radio   L2B / Sending NAVTEX at 1400z
  • Buenos Aires Prefectura Naval Radio   L2C / Sending NAVTEX at 0030,0300,1000,1400,1530,1900,2100 (all times Zulu)

Just a tipp: ALways use the CF for FSK modulated transmissions - that may help to identify the station you caught much more easier.
 ;)

Hope this helps.
« Last Edit: November 28, 2022, 0914 UTC by tiNG »
73 & 55
Thomas
Rüm hart – klaar kiming


Offline UtilitySeattle

  • Jr. Member
  • **
  • Posts: 99
  • Snohomish County Washington USA
    • View Profile
    • Email
Re: UNID FEC 16805 USB 21:00 UTC 27 Nov 2022
« Reply #2 on: November 28, 2022, 1003 UTC »
Yes Thomas very helpful. It was likely L2C as this was NAVTEX at 21:00 hour. 73s


Hi.

16805,0 kHz is irritating, as you cauhgt an FSK modulated signal. The central frequency for that is 16804,5 kHz and it is a well known DSC-channel in the maritime mobile service.

There are many stations from Chile listed there but I'd guess it is either Antofagasta Zonal Radio (CBA) or Valparaiso Playa Ancha Radio (CBV). A very hot catch could be Bahia Fildes Radio (CBZ22) from the Antarctic (-62.196342, -58.959383 / GC07MT).

Looking on Argentine there are the following stations on 16804,5:

  • Buenos Aires Prefectura Naval Radio   L2G
  • Mar del Plata Prefectura Naval Radio   L2U
  • Comodoro Rivadavia Prefectura Naval Radio   L3B
  • Ushuaia Prefectura Naval Radio   L3P
  • Argentina Radio   LSD836
(Source: Admirality LIst of Radio Signals, ITU, IMO GISIS)

On the other hand there is NAVTEX-traffic on 16806,5 kHz but I have no stations from Chile listed there. But from Argentine there are tow entries in my database:

  • Buenos Aires Prefectura Naval Radio   L2B / Sending NAVTEX at 1400z
  • Buenos Aires Prefectura Naval Radio   L2C / Sending NAVTEX at 0030,0300,1000,1400,1530,1900,2100 (all times Zulu)

Just a tipp: ALways use the CF for FSK modulated transmissions - that may help to identify the station you caught much more easier.
 ;)

Hope this helps.
SDRPlay RSP-2 pro  G5RV Snohomish County Washington USA CN87

 


Item image   Johnson Viking 4740 CB Radio Service Installation Manual

 $19.95