Charles Harpole wrote:
> i bought mine from Allied Radio in about 1962 to gain some fine tuning on my
> Space Spanner regerentative control. If you remember all of that, YOU ARE
> OLD.
>
Guess so... That was my first receiver. I built one from a kit even
before getting my license.
73
Roger (K8RI)
> Of course, what you want was a common item back when parts were needed by
> people and not by huge assembly companies (that only want one set of things).
> I remember multiple versions and sizes.
>
>
>
> I am keeping mine. 73,
>
> Charles Harpole k4vud@hotmail.com
>
>
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>> From: ToddRoberts2001@aol.com
>> Date: Sat, 3 Oct 2009 14:27:22 -0400
>> To: amps@contesting.com
>> Subject: Re: [Amps] Vernier knobs?
>>
>> It sounds like for what you are looking for you will have to make
>> something up from parts. A vernier knob turns counter with a center
>> knob marked with perhaps a degree wheel to count the increments
>> of each turn and a larger separate outer circumference dial that turns more
>> slowly to count the individual turns 1-2-3 etc.
>>
>> If such a turns counter was availiable these days I'm sure the seller would
>> want a ridiculous price for one IE Surplus Sales of Nebraska.
>>
>> There is a place that has 6:1 vernier drives for a 1/4" shaft input
>> on each end, newly made in the USA and in stock for $11.50 each.
>>
>> 1N34A.com
>>
>> Go to their PARTS section and look up vernier drives. I know some
>> people gang two of these together for a 36:1 reduction which
>> would be close to what you are looking for. Then you would have to
>> figure out some way to couple the second shaft drive back up front
>> to turn the outer circumference dial marked 1-2-3-4 turns up to 36 turns.
>> Plus you would need to couple off the front center knob for the actual
>> drive to the roller inductor and vacuum caps. Perhaps a small toothed
>> belt drive off the front shaft would work here. I bet the coupling could
>> be done
>> with a little ingenuity.
>>
>> 73 Todd WD4NGG
>>
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