"Ronnie" wrote in message
news
Thanks Harry.

I do have a service manual for the system published
by Piper, ... I'm also
trying to find out what help the orginal manufacture
can be.

It really helps to know how to throw yourself on the mercy of some marketing
type to get to an Engineer who is willing to spill his guts or, give away
the keys to the kingdom and send you a schematic and info. Done a lot of
that over the many years as a Engineer-Ham...or is that Ham-Engineer.

73, Steve, K9DCI

Ronnie wrote:

Hi,

Anybody have a library of transistor databooks
from the early 60's? I'm trying to find technical
info on the following devices:

Power Transistors:
Motorola 48S23 in TO3 Steel case

Signal Transistors:

Motorola 48S45 (624 date code or other marking)
Motorola MA900 (Sort of crossed to NTE 102A or ECG 102)
Mototola SM1824 (612 date code or other marking)
(one schematic I have shows this to be
a
PNP type)

2N1192 (Schematic shows as PNP type - one hit shows
as Germanium)
Motorola SM2140 (Schematic shows as PNP type)
GA987 (980425 date code or other marking)

I'm unsure about the manufacturer of the last device. All the other have
the Motorola circle M logo clearly marked, but it is not on that device.
The system these devices are in was manufactured in the fall of 1963
so it is likely that the deisgn is from the 1960 to 1962. I'd like to
browse
through a 1960 to 1963 Motorola data book. I'm suspecting all of these
to be PNP type Germanium devices, but that is just a guess.

Any help appreciated.

Ronnie, N5CSE



Ronnie,

I'm not trying to be an arse, but the "health and safety" part of me just
woke up...

What is the regs say about a homegrown repair of the autopilot or is it
classified as a non-essential unit or non-safety unit?

I assume the insurance companies would have a field day if you get a midair
flat tyre or decide to make an accidental or sudden parking...

-- Which might be the initial reason for Mitchell to use selected components
from Motorola...

I guess that the best way to get access to this info is to try to speak with
the supplier. Even if they been taken over, the airplane industry tend to
be paranoid on saving all data possible. Talk with the service engineers,
if they are more than 5 of them, you have good odds for one of them being a
ham!

Cheers


Dan / M0DFI