[Amps] ef johnson rotarty inductor info sought

R.Measures r at somis.org
Sun Feb 26 17:34:05 EST 2006


On Feb 26, 2006, at 1:48 PM, Scott Townley wrote:

> Per Catalog 976:
> 226-1
> 1/4"x1/8" ribbon, 10 amps
> "popular for commercial and amateur use, these moving coil type 
> inductors
> easily handle well over a kilowatt of plate modulated RF energy to
> 30mc.  Heavy silver plated conductors and silver plated contact bars 
> and
> contacts.  Glass bonded mica end frames and support bars.  1/4" shafts

The shafts were 3/8" dia.

> extend 3/4" front and rear.
> coil 3" dia. x 12-3/4" long, with decreasing pitch towards one end.
> 22.5uH...1976 price $57.00 (sign me up!)
>
>
> 222-103
> 1/2"x0.090" ribbon, 15 amps
> "Excellent for medium power RF equipment..." but no specific power
> mention.  Seems odd that 15A would be "medium power", I guess "medium"
> really only means between "large" and "small"...whatever THEY mean.
> Overall dimensions 11"Lx6-1/2"Wx6-5/8"H, constant pitch.
> 27uH...1976 price $42.00
>
>
> At 14:20 2006-02-26, gdaught6 at stanford.edu wrote:
>> Hello all,
>>
>> Does anyone have specs (inductance range, power level, etc.) on the
>> following EF Johnson coils?
>>
>> 226-1
>>
>> 222-103
>>
>> Any information will be greatly appreciated!
>>
>> TIA es 73,
>>
>>
>>
>> George T. Daughters, K6GT
>>
>>
>>
>>
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>
>
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>

Richard L. Measures, AG6K, 805.386.3734.  www.somis.org



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