[GreenKeys] Stunt Box Corrected, Restoring Missing Characters

Wed Dec 4 15:34:26 EST 2019

More Model 28 Pallet Info -
(Figure 50) The old 152560 Pallet Box Rear Plate previously
shown is no longer available. It is replaced
by the 194054 Set of Parts consisting of a Front Plate
and Rear Plate shown in Figure 50. The new plates
are identified by a letter "X" stamped in the top
center of each plate between the "LTRS" and "FIGS"
stamping. The "X" is omitted on the old plates. New
and old style plates are interchangeable in pairs only.
The old 154616 Pallet Box Front Plate previously
shown is still available for replacement purposes.

Nick England K4NYW
www.navy-radio.com

On Mon, Dec 2, 2019 at 4:59 PM Nick England <navy.radio at gmail.com> wrote:

> Hi Paul - they are type "pallets"
> The spring is 157238 - yep, one spring per pallet
> Paul Cembura (RTTY Electronics) should be able to help out
>
> Info from http://www.navy-radio.com/manuals/tty/1149B-6705.pdf
> Note 26: (Figure 51) The old and new style type boxes may be
> identified by the depth of the Pallet Box Front Plate
> (new style being shallower). The old style pallets cannot
> be used in the new style type boxes. New style
> pallets can be used in either new or old style type
> boxes. The old style 150077 Pallet Spring is no longer
> available and is replaced by a new style 157238 Pallet
> Spring. Only the new style spring can be used universally
> with either the new or old style typepallets and
> typeboxes. However, the old style springs can be used
> with the new style pallets in an old style type box.
> The old and new style pallets may be identified by the
> length of the shank from the rear of the pallet head to
> the far end of the elongated hole. (The old style being
> the longer- See Figures 50 and 51).
>
> Nick England K4NYW
> www.navy-radio.com
>
>
> On Mon, Dec 2, 2019 at 2:52 PM ad7i <ad7i at ad7i.net> wrote:
>
>> Greetings Greenkeyers --
>>
>> A big *Thank You* to Jerry Murphy, Nick England and others who provided
>> insight and guidance on the undesired operation of my 28 RO due the the
>> stunt box "helping" on certain character sequences, and how to correct
>> those problems.
>>
>> Given that my 28 RO seems to have been cobbled together from parts, it
>> may have been that some of my stunt box features were of particular value
>> and utility for that prior application.  Yet, for my use of this 28 RO the
>> characters #, " and & had special meaning via the stunt box that caused
>> extra line feeds, vertical tabs and horizontal tabs.  It seems that each of
>> those characters occasionally appear in the ITTY feed.  I've now defeated
>> those operations by wiring-up the pawls on the associated stunt box slots.
>> Unwanted operations solved.
>>
>> Next, as TTY newbie, I wondered why, with those offending pawls now
>> defeated, that I wasn't able to print #, " and &.  Of course you know the
>> answer but it took me about 20 minutes to figure it you.  Yes, eventually I
>> figured out that #, " and & were not present in my type box.
>>
>> I see from this document
>> http://www.navy-radio.com/manuals/tty/typebox-code.pdf on Nick's website
>> that it looks like I need the following type pieces to add to my type box
>> (what's the correct term for these things that get whacked against the
>> ribbon to make a printed character?):
>>
>> p/n  157638 typepiece " double-quote
>> p/n  157659 typeiece # pound sign
>> p/n  157639 typepiece & ampersand
>>
>> Adding type pieces to the typebox brings up the question of springs for
>> the type pieces.  Do I need a spring for each additional type piece?  Does
>> anyone have the part number for that spring?
>>
>> Another question I have is regarding slashed zeros.  Again I see from the
>> typebox-code.pdf file that the part number for the slashed zero is:
>>
>> p/n  157635 typepiece slashed zero
>>
>> With respect to the slashed zero, my 28 RO does not have a slashed zero;
>> it's simply a conventional zero, a little skinnier than a capital O.  My 28
>> RO appears to have originally been a Bell System device (or at least the
>> typing unit was originally a Bell System device based on the model number
>> of the typing unit).  I also know that my Bell System 15 does not have a
>> slashed zero.  Did the military version of the 28 commonly make use of a
>> conventional zero or a slashed zero?  Were there other categories of users
>> that also had slashed zeros on their TTYs instead of conventional zeros?
>>
>> Thanks again to everyone on this list for your help.
>>
>> Paul Newland, ad7i
>>
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