>
>>I agree, the coil that Henry used in that amp was not satisfactory. I owned
>>two of these amps and never did like the way they had the switched caps and
>>the roller coil set up. I never understood why they did not use the Johnson
>>roller coils. Superior to the HB Henry stuff.
>>
>The Johnson ribbon rollers were similar to the Henry versions. All
>required that unused turns be shorted.
>
>
>
>Rich...
>
>R. L. Measures, 805-386-3734, AG6K, www.vcnet.com/measures
>
>Isn't a ribbon coil the kind that uses the "flat stock" type of material,
>eg, 1/4" strap?
Yes
>
>The Johnson roller coils I am familiar with use a ceramic form and somewhere
>around a #12 solid, round conductor.
>
That was the 229 series. The 222 series was made with 1/2" copper
ribbon. Due to their compactness, they are ideal for 8170s and the like.
- later, Lane
Rich...
R. L. Measures, 805-386-3734, AG6K, www.vcnet.com/measures
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