[AMRadio] Ranger Modulation


Rick Brashear rickbras at airmail.net
Thu Nov 16 15:15:24 EST 2006


Oops... yes, my brain said ma, but my fingers typed volts.  Sorry, my 
age is showing...   :-)

Jack Schmidling wrote:

> Rick Brashear wrote:
>
>> Jack,
>> I would stay with the 55-70 volt modulator current leaning toward the 
>> high side.  I try to set mine at 65 volts.
>
>
> I presume that was a typo.  Does anyone challenge this? What is the 
> effect of different modulator current values.  Changing it risks 
> breaking the wire on that resistor... which BTW, Rick sent to me as a 
> gift.
>
> Why would Johnson change the value so drastically from one manual to 
> the next?
>
> Does the 6l6 have anything to do with my problem?
>
>> I would also put the output leads from the modulation transformer 
>> back as they were...
>
>
> Will do.
>
>> If you haven't replaced C69, I would.
>
>
> Don't remember... I am getting soggy.
>
> js
>




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