[Milsurplus] Any reason to Navy ID numbers

[J. Forster]

Thanks very much to all. Most helpful.
-John

Mike Morrow wrote:

> John wrote:
>
> >Can anyone explain the Navy WW II equipment ID system.
>
> As others have written, Cabc-xypqr-z translates
>
> Cabc - Contractor ID.  Many can be found on Fred Chesson's site.
>
> xy - function
>
> pqr - unique equipment ID.  As Mike Hanz pointed out, this is numerical
> except for radar equipment (then it is alphabetic).
>
> z - Equipment version
>
> It's the xy function info that's most informative.  I'm sure there's an
> official list somewhere on the net, but I don't know where.  Until someone
> posts something more complete and official, here's a short list from
> equipment and manuals that I have:
>
> 10 - Mounting plates, cases
> 14 - Antenna switch
> 19 - Batteries
> 20 - Rectifier power unit
> 21 - Mechanical power unit
> 22 - Meters
> 23 - Control unit
> 24 - Switches
> 26 - Keyer
> 29 - Antenna relay
> 30 - Inductors/transformers
> 40 - Crystal unit
> 43 - Receiver-Transmitter unit
> 46 - Receiver
> 47 - Tuning unit
> 48 - Capacitors
> 49 - Audio output panels, jacks, speakers, sockets, cables
> 50 - Modulator
> 51 - Audio input (microphone) unit
> 52 - Transmitter
> 55 - Remote indicator unit
> 60 - Testing unit
> 61 - Insulators/terminals
> 62 - Junction box
> 63 - Resistors
> 66 - Antenna unit
> 69 - Loop antenna
> 71 - Antenna reel
> 74 - Frequency meter
>
> You'll often find examples of redundancies and seemingly inappropriate
> assignments of function code to some components.
>
> 73,
> Mike / KK5F
>
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