LF: RE: JT9 Coding?

[Rik Strobbe <rik.strobbe@fys.kuleuven.be>]

Hello Marcus,

 

" I recently missed the JT9 activity night, mostly due to the lack of a linear MF transmitter"

I assume that with "linear MF transmitter" you mean a transverter from HF to 472kHz

But just to avoid any confusion: JT9 does not require a linear amplification as it is FSK (similar to WSPR).

 

73, Rik  ON7YD - OR7T

 

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Van: owner-rsgb_lf_group@blacksheep.org [owner-rsgb_lf_group@blacksheep.org] namens markusvester@aol.com [markusvester@aol.com]
Verzonden: maandag 1 februari 2016 21:22
Aan: rsgb_lf_group@blacksheep.org
Onderwerp: LF: JT9 Coding?

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.

…