[ARC5] BC-611 F Data Needed

[Scott Robinson]

My 1953 Stewart-Warner built R-390A was built with 5% resistors, and 
they were all still within 5% when I checked about 10 years ago. Not 
sure of hte mfr, but in general the ones with the mold seams down the 
sides a a rough finish are usually way off.

Scott Robinson

On 4/21/20 2:00 PM, Tom Aschenbrenner wrote:
> 
> Regarding BC-611, or other units of the same time period, resistor values
> changing:
> 
> When I restored the SJ-1 radar on the USS COBIA I found that the builder
> (Western Electric) had purchased resistors from two venders, Allen Bradly
> and IRC.  Every one of the IRC's was way off spec (high) and every one the
> AB's were right smack on spec.
> 
> The moral of this is to check the parts list for 
> resistor manufactures and if you
> see IRC get ready for a soldering session.
> 
> Tom A.
> WA9EXS
> 
> 
> 
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