[Milsurplus] [MRCA] Vintage test equipment?

[J. Forster]

I've long thought, but cannot prove, that it is very likely the coils and
IFTs on the ARC-5 were aligned on a jig/test station and then just plugged
into the receiver chassis, with at most a touchup. This is because:

It takes far more time to align a receiver w/ lots of adjustments, than
tweek 2 or 3 screws in a purpose-built test set, aqnd plug it together.

I've seen a bunch of radios over the years and never seen a bad IF
transformer. WHY socket a part that almost never fails?

I t5hink my surmise wins because of Occam's Razor.

YMMV,

-John

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> John,
> That's pretty much what I just got finished doing, here, in writing up
> the IF transformer article.  I was able to swap coils from both the R-26
> and the two BC-454-As with no issues. Alignment was simply not an
> issue.  So, your supposition appears correct.
>
> Jeep - K3HVG
>
> On 4/10/2014 12:36 PM, J. Forster wrote:
>> I strongly suspect that it was possible to fix and align an ARC-5
>> without
>> anything much more than a VOM.
>>
>> I wish someone would take an unhacked set, check its alignment, swap in
>> the coils and IFTs from another aligned set, then re-test.
>>
>> I expect that it would meet spec.
>>
>> FWIW,
>>
>> -John
>>
>> ==================
>>
>
>