[GreenKeys] M28 identification - Mark I vs Mark II vs Mark III

[John, W9DDD]

Idle minds are the work of ....  or was that idle hands?

Anyhow, I have a Mark III keyboard with a Mark II (having solid hold 
downs) printer which according to Navy literature is a set. (LK25 with LP77)

The printer has the solid spool hold down.

Dan's LP12 has solid hold downs

I have a LP14  that has the wire hold down.

Probably can't rely on the LP number as much of an indication of vintage.

Educate me about the stunt box thing, I never noticed before.

Printer stuff just tends to be labeled old or new style parts without 
any reference to Mark number that I've noticed.

John, W9DDD
Ich habe dreimal abgeschnitten uns jetzt zu kurtz. (I cut it off 3 times 
and it's still too short.)

On 8/22/2019 12:46 PM, Nick England wrote:
> More idle curiosity - and to create a web page with some info and photos
> I think I know the following quick ID features:
> Mark III
>    - new style cam transfer levers for keyboard transmitter.
>    - new style keyboard hood and key guide with 2 screws for clear info 
> covers
>    - printer has new style left side mounting for stunt box
>    - printer ribbon spool hold-downs are wire
> Mark II
>    - old style cam transfer levers for keyboard transmitter.
>    - old style keyboard hood and key guide with one screw for clear info 
> covers
>    - printer has old style left side mounting for stunt box
>    - printer ribbon spool hold-downs are solid
> Mark I ???
>   - is this like a Mark II but with the very early 2-row electrical 
> connectors?
> 
> Did the printer and keyboard have separate Mark generations?
> i.e. Was there a Mark III keyboard before a Mark III printer or did they 
> change at the same time?
> 
> I'm sure there are some glaring differences that I have completely 
> overlooked - additions and corrections are welcome!
> 
> Nick England K4NYW
> www.navy-radio.com <http://www.navy-radio.com>
> 
> 
> ______________________________________________________________
> GreenKeys mailing list
> Home: http://mailman.qth.net/mailman/listinfo/greenkeys
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:GreenKeys at mailman.qth.net
> 
> 2002-to-present greenkeys archive: http://mailman.qth.net/pipermail/greenkeys/
> 1998-to-2001 greenkeys archive: http://mailman.qth.net/archive/greenkeys/greenkeys.html
> Randy Guttery's 2001-to-2009 GreenKeys Search Tool: http://comcents.com/tty/greenkeyssearch.html
> 
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to w9ddd at tapr.org
>