[R-390] frequency counter connection point

[Tom Frobase]

You know what band you are on by virtue of the MHz counter on the Veeder 
Root, only the KHz really matter.

I would connect it to the output of the PTO.  The problem with offset 
arises because the PTO tunes from 3.455 - 2.455 MHz the counter would 
have to subtract the result form 3.455KHz to get the correct number.  
The other problem, as we all well know, are the minor variations in the 
crystals in the first and second mixer.  So in the end, the accuracy 
would depend on the other mixers. ... tom, N3LLL


2002tii wrote:
> Frank asked:
>
>   
>>> where [to] connect a frequency counter to obtain a numeric value 
>>> that would (approximately) track the Veeder-Root display on my R-390A.
>>>       
>
> These folks claim their digital display works with the 390A:
>
> http://electronicspecialtyproducts.com/dd103.html
> http://electronicspecialtyproducts.com/radio_list.html
>
> They claim that data for "many receivers" is pre-programmed -- if 
> that includes the 390A, you shouldn't have to program it for the 390A 
> conversion scheme yourself.  You would still need to switch the 
> bandswitch on the display to match the Mc setting on the 390A.
>
> I have not seen the product and do not know anything about the supplier.
>
> Best regards,
>
> Don
>
>
>
>
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