[Motorola] P23AAM Help needed

[Jack Antonio]

Tom and Geoff

Thanks for the information on the transistors and possible
replacements.

The NU-137 schematic I have is from an H21 manual, dated
3/56.  The supplies on the H23AAMs are NU-137-3, and
the date stamped inside radio is Dec. 1959. The radios
themselves show the newer Motorola NLD-xxxx style numbers, but
the supplies are from the older numbering system.

The problem with the schematic I have is with the
connector for the external cable, it appears the
pin numbers have been transposed. As drawn, I don't
see how the supply would have worked. I ohmmed it out
and figured out some of it, but there are still
some differences in the base biasing networks between
the schematic and the supply itself.

On the Z radios, I also have an AN/PRC-59, which looks
like an H23BAC with a Coast Guard nameplate. Haven't done
anything with it as yet.

Thanks

Jack