On 5/22/2010 4:34 PM, Carl wrote:
> Your tuning for a peak BUT not exceeding the tubes screen current rating.
> The Load cap controls the amount of Isg once the Tune control is set for a
> resonance indication on the screen meter. They interact a bit.
>
Thanks Carl,
This is what I've been trying to say, but my allergies are kicking up to
the point of it being like a cheap drunk.
Want to go flying? It'd certainly be interesting<:-))
That was said in jest, just in case any one missed the smiley. Feeling
like this I'd have my "head in the lunch bag" before I got around the
pattern tonight.
73
Roger (K8RI)
> Tuning is very similar to a GG amp with both using a grid current as the
> best indicator.
>
> You can keep an eye on the grid current but its mainly to keep the drive to
> a safe level. Since this is a modification has the grid circuit tuning been
> optimized? If not do that first at low power.
>
> Carl
> KM1H
>
>
>
>
>
> ----- Original Message -----
> From: "Jim Brown"<jim@audiosystemsgroup.com>
> To:<amps@contesting.com>
> Sent: Saturday, May 22, 2010 1:22 PM
> Subject: Re: [Amps] 4CX250B Ratings in Dentron Clipperton V
>
>
>
>> On Fri, 21 May 2010 19:32:43 -0400, Roger wrote:
>>
>>
>>> The screen is the most sensitive tuning indicator and particularly so at
>>> the higher power settings.
>>>
>> So if I watch the screen current, am I tuning for minimum?
>>
>> Do I need to watch grid current, or will that take care of itself if the
>> screen current is right?
>>
>> Many thanks for all the great responses, both on and off list. Very
>> helpful.
>>
>> 73,
>>
>> Jim K9YC
>>
>>
>>
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