Re: LF: JT9 Coding?

[Andy Talbot <andy.g4jnt@gmail.com>]

Oh yes, so it does.   "i have a dog"   also fails. 

as do quite a lot of variants on that

Could it be trying to recognise the string as a callsign or QSO message, and trying to compress it using the different technique that entails.  Then getting things wrong because the text fails as a valid callsign?

'jnt

On 1 February 2016 at 22:08, <markusvester@aol.com> wrote:

… I did so. jt9code “1 2 3 4 5“ and “i have acat“ etc. worked fine, but “i have a cat“ with three spaces resulted in a mysterious “Internal Error: EOF condition not handled-- END= tag needed“. Never mind, easy to work around.

 

73, Markus

 

Von: Andy Talbot
Gesendet: Montag, 1. Februar 2016 22:58
An: rsgb_lf_group@blacksheep.org
Betreff: Re: LF: JT9 Coding?

 

If your message has spaces in it, you need to place quotation marks around the message.

 

'jnt

 

 

On 1 February 2016 at 21:35, <markusvester@aol.com> wrote:

Thanks a lot Andy, that’s exactly what I was looking for. It’s not obvious on the website but the download URL is

http://physics.princeton.edu/pulsar/K1JT/jt9code.exe

 

Interestingly, „i have a cat“ throws an error but „i_have_a_cat“ did what I wanted.

 

Rik, Vinny, my term „linear transmitter“ was probably inaccurate wording, I just meant an SSB mixer from audio to RF.

 

Best 73,

Markus

 

 

Von: Andy Talbot
Gesendet: Montag, 1. Februar 2016 21:39
An: rsgb_lf_group@blacksheep.org
Betreff: Re: LF: JT9 Coding?

 

There is a separate utility called JT9CODE, downloadable from the WSJT website

There is a similar one for JT65

 

They are a bit convoluted to use, so I wrote wrappers for them to intercept the output to screen and send to formatted files for including within PIC .assembler files

 

Andy  G4JNT

 

 

On 1 February 2016 at 20:22, <markusvester@aol.com> wrote:

While we’re at it…  I recently missed the JT9 activity night, mostly due to the lack of a linear MF transmitter. For WSPR, I’ve used a commandline tool (wsprcode.exe, or wspr.exe with -tx option) to encode a message to a file. This is then read by a little homemade program (ddswspr.exe), which feeds an AD9850 DDS module through the serial port.

 

Does anyone know whether a similar encoding option exists for JT9?

 

Best 73,

Markus (DF6NM)

 

Von: John Andrews
Gesendet: Montag, 1. Februar 2016 19:17
An: rsgb_lf_group@blacksheep.org
Betreff: Re: LF: WOLF Coding

…

 

"If you have a BPSK-capable beacon which uses an EEPROM to store its

message, WOLF can generate a binary file suitable for programming the

device.

…