[R-1051] Navy and Air Force R-1051B 100cps modules are incompatible

[David Wise]

Paul, if the transistor version of the 100cps module came first,
why did they go to the trouble of powering the logic with 4V?
It's too much of a coincidence that that's the recommended
Vcc for the IC's used in the IC version.  Did the transistor-version
designers see the IC version coming?  This is too much foresight
in light of the fact that they couldn't even keep the Navy and AF
versions in sync.

Francesco, I hope you didn't find out the "hard way".  :/

Regards,
Dave Wise
SWL in Hillsboro, Oregon

>-----Original Message-----
>From: r-1051-bounces at mailman.qth.net 
>[mailto:r-1051-bounces at mailman.qth.net] On Behalf Of paul swed
>Sent: Friday, August 31, 2012 6:25 PM
>To: R-1051 Discussion Group
>Subject: Re: [R-1051] Navy and Air Force R-1051B 100cps 
>modules are incompatible
>
>transistors were first in the r1051s and go wayyyy back.
>I was trained on the brand new radios in 1973. Second class at 
>great lakes.
>Gosh dollars $27K each.
>Regards
>Paul
>WB8TSL
>
>On Fri, Aug 31, 2012 at 9:19 PM, Francesco Ledda 
><frledda at att.net> wrote:
>
>> I found out about that 10 year ago, when I got my 1051C....
>>
>> FL