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

[David Wise]

The Navy module needs +4V on pin 7.  (I don't know what six-pack
pin that corresponds to, because the diagram is missing from
Navships 0967-970-9010.  "To Be Supplied.")  Since the front panel has
to provide the module with the 4-bit code input, we can deduce that
it has 4V.  The module does not need much current; the FP's 4V regulator
might have enough reserve to do it.  Thus, your wire.

But the AF front panel needs +15V for the vernier pot, and usually it
gets it from the 100cps module.  It seems to me you needed two wires,
and maybe a 15V regulator.  Does your Vernier control work?

Best Regards,
David Wise

>-----Original Message-----
>From: r-1051-bounces at mailman.qth.net 
>[mailto:r-1051-bounces at mailman.qth.net] On Behalf Of Francesco Ledda
>Sent: Tuesday, September 04, 2012 10:19 AM
>To: R-1051 Discussion Group
>Subject: Re: [R-1051] Navy and Air Force R-1051B 100cps 
>modules are incompatible
>
>No, I did not. About 10 years ago, I bought 2 1051Cs; both had 
>the 6-packs missing. I dropped a couple of 1051Bs packs, but 
>did not work. A brief investigation showed that a portion of 
>the six pack was not powered; don't remember which, but one of 
>the voltages was missing. A single wire fixed everything. The 
>only 1051Cs I have seen are the one I have. I was told that 
>the C version was a USAF special used on the missile silos. 
>Don't know if it is true, but I like the story, and I am 
>sticking with it.
>
>Best Regards,
>
>Francesco Ledda
>
>Sent from my iPhone