[GreenKeys] using a scope for rtty

Bob Camp ham at cq.nu
Sat Mar 17 20:42:31 EST 2007


Hi

Your ST-6 probably has drifted just a bit.

The scope will show a proper cross when your radio is tuned to the  
center frequency of the ST-6. It will work just fine.

Bob


On Mar 17, 2007, at 8:31 PM, Eugene Hertz wrote:

> Hi All,
>
> Now that my rtty station is shaping up, I decided to pull out my  
> tektronix 604 XY Monitor out of storage.  And I connected it to my  
> ST6 and had a question.
>
> Seems I was expecting a vertical ellipse and a horizontal ellipse  
> corresponding to mark and space (or maybe space and mark, I forgot  
> which is which).  However the horizontal was not quite horizontal  
> and the vertical was not quite vertical!  The horizontal seemed to  
> go up hill and the vertical had a similar angle.
>
> Now, I took my precision digital function generator and programmed  
> in 2125 and 2295 so I know I'm putting in the right freqs.  So why  
> is this so? Does this mean that my ST6 is not quite tuned properly?  
> Does it mean my XY scope is off?
>
> Thanks
> Eugene
>
>
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