[RTTY] Another PK232MBX Issue

John W. Fleming john at wa9als.com
Thu Jun 17 11:31:43 EDT 2004


On Thu, 2004-06-17 at 10:15, John Holmes wrote:
> Hi Guys.
> I hope that somebody can give me a suggestion of a fix for the following
> problem.
> 
> I am using the PK-232MBX for AFSK RTTY as I can't use FSK with my old TR-7.
> The 232 has NOT been modified using the "4 resistor mod" that I believe
> improves the MBX front end.
> 
> During this past contest, I was told that I had a "strange" signal and that
> my offset was wrong. I asked further and was told that my offset was about
> 2070. 

Are you saying your mark tone was 2070??  Offset usually refers to the
differnce between the SSB dial reading when the AFSK signal is properly
tuned and the actual frequency, often off 2125 Hz depending on the
receiving station's rig setup.  The standard PK-232 uses a 200 Hz shift
for both pactor and RTTY, but I don't think this is what you're
referring to.

Can you provide more specific details about what you were told and what
observations led to the report?  John, WA9ALS




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