[GreenKeys] M28 to M14 TD adapter

[Nick England]

Thanks, Roy, Jerry, Wayne, Rice, etc. - it is indeed evidently to let you
fit a M28 TD to a M14 or M19 table.
Interesting.....

Nick England K4NYW
www.navy-radio.com

On Fri, Jan 15, 2016 at 3:00 PM, Roy Morgan <k1lky68 at gmail.com> wrote:

>
> On Jan 15, 2016, at 11:27 AM, Nick England <navy.radio at gmail.com> wrote:
>
> > I have a unit with a base for a 28TD and motor (LXDB) sitting on an
> adapter that turns it into a M14 base. ...
> > What do these contacts fit?
>
> Nick,
>
> There is a base unit that would be bolted to the table that accepts the
> bottom most plate of the thing you show, and had the mating sliding
> contacts shown in your second picture.  The base was fitted with some sort
> of switch that closed the loop contacts when you took the T/D out, so that
> the loop in which the T/D was operating would continue to be continuous.
>
> If a T/D was malfunctioning or was due for service, it would take only
> seconds to remove it and replace it with another one.  I am pretty sure
> that the line closing contacts were arranged so that the loop was never
> open even during removal or installation of the T/D.   (Looping jacks in
> patch panels do this.) The pictures I have here of Model 14 T/Ds show a
> finger hold place at the very bottom of the tape end that lets you get a
> good grip on the machine, lift it up and pull it out of the base unit.
> Once a T/D is settled onto its base, both the mechanical dimensions of the
> base and bottom plate, and the weight of the machine ensure it will stay
> put.
>
> No doubt some manual for the Model 14 T/D has diagrams of the base unit,
> but I don’t find it in the one manual I checked.
>
> I’d guess that many or most of the T/D’s we run into do not have the
> mating base plate with contacts, because it’s so easy to just pull the T/D
> out of the base and carry it off without taking the time to remove the base
> from its installation and include it with the machine.
>
> If I were to admit that I have a basically unused Model 14 T/D complete
> with base unit in my storage unit, I’d have to add extra padlocks to
> protect the place.  So, I won’t say anything about that.
>
> Roy
>
> Roy Morgan
> k1lky68 at gmail.com
> K1LKY Since 1958
>
>
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