[GreenKeys] Model 28 with a new problem

[Nick England]

What happens when you adjust the RANGE control?

On Sat, Oct 2, 2021 at 3:16 PM Mike McAuley <mmcauley at cox.net> wrote:

> Hmmm, okay I see your point Wayne. Thanks!
>
>
> Mike
>
> -------- Original message --------
> From: hwhall at compuserve.com
> Date: 10/2/21 12:04 PM (GMT-07:00)
> To: mmcauley at cox.net, greenkeys at mailman.qth.net, john-koster at tx.rr.com,
> harold at w6iwi.org
> Subject: Re: [GreenKeys] Model 28 with a new problem
>
> >what could be causing a MARK to be sent on bit 5 in cases where it
> should be a SPACE?
>
> Might be asking the wrong question, it might be "what could be causing
> those bit 5 characters to be decoded & printed incorrectly?"  IOW, the code
> may be getting sent correctly but decoded incorrectly.  That the characters
> have a common denominator in the type box sounds suspicious.
>
> Wayne
> WB4OGM
>
> -----Original Message-----
> From: Mike McAuley <mmcauley at cox.net>
> To: Green Keys <greenkeys at mailman.qth.net>; John <john-koster at tx.rr.com>;
> harold at w6iwi.org
> Sent: Sat, Oct 2, 2021 11:54 am
> Subject: [GreenKeys] Model 28 with a new problem
>
> So I got the code bar 3 issue fixed as far as I can tell.  I can see all
> five code bars shifting back & forth.
>
> But now there is a new issue...
>
> A types as W
> E types as Z
> I types as P
> S types as Y
> U types as Q
>
> 3 types as quotation mark
> 7 types as 1
> 8 types as 0
> Dash types as 2
> STOP types as hashtag
> Spacebar types as H
> Line feed types as L
>
> Now I was sleuthing the bit codes for all those keys and from what I see,
> the common denominator is bit 5.
>
> On those keys, a bit 5 SPACE is being turned into a MARK.  On other
> characters where bit 5 is *supposed* to be a Mark, they are typing fine.
>
> AND... it's not doing it on ALL the keys where switching bit5 from S to M
> would change the character.  For example, typing C does not change to V.
>
> I can also see that these affected characters happen to lie in the center
> four columns on each side of the typebox (middle four for the FIGS section,
> & middle four for the LTRS section.)
>
> The bit 5 code bar is NOT stuck. I can see it freely running back & forth
> between M & S.
>
> So the question is: what could be causing a MARK to be sent on bit 5 in
> cases where it should be a SPACE?
>
> Any thoughts, ideas or suggestions appreciated
>
>
> 73s
>
> Mike
> KD7VRG
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-- 
Nick England K4NYW
www.navy-radio.com
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