[GreenKeys] off air NAVTEXT, SITOR-B recordings

[Christian Gauger-Cosgrove]

Have you considered just using fldigi to create sound recordings? The
program is free, and it works transmitting SITOR-B, and can also
transmit NAVTEX too.

You can find the software here: <http://www.w1hkj.com/Fldigi.html>

Cheers,
Christian

On 16 December 2014 at 12:01, paul at paulnewland.com <paul at paulnewland.com> wrote:
> I'm working on having an Arduino Uno microcomputer decode SITOR-B (FEC)
> signals (Baudot RTTY TX and RX to an LCD display is working on the Arduino
> now) and would like to work with some off-the-air signals.  Unfortunately,
> at the moment, I'm in the position of having poor antennas and a broken
> radio receiver.
>
> Is there someone who is near a US or Canadian 518 kHz Navtext station who
> can digitally record the audio output of their radio when monitoring a
> NAVTEX broadcast and either Dropbox or FTP me the sound file?  I can give
> you an account on my FTP server.  1615/1785 Hz tones would be preferred as
> I'm using a simple PLL as my test FSK decoder (hence the need for a solid
> audio signal), although I can make 2125/2295 Hz work with the PLL.  I would
> use 2125/2295 HZ with my ST-5000 but the filters in the ST-5000 seem too
> narrow to deal with the 100 bps FSK signal.  Either Normal or Reversed tones
> are both fine.  I can invert the data in the microcomputer.
>
> thank you.
>
> Paul Newland, ad7i
>
>
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-- 
Christian M. Gauger-Cosgrove
STCKON08DS0
Contact information available upon request.