[GreenKeys] Newbie setting up an m26

Wed Feb 7 23:55:50 EST 2024

Hi John and all,

An update: Not sure if it was due to the battery's voltage gradually
decreasing, but after some slight cleaning on the areas I presumed to be
contacts (after a lot of manual rotation and observation), I've been able
to get the typed keys to send the right signals.  Sometimes the transfer
levers don't engage (select ones that are not the carriage return or line
feed...likely meaning a sign for cleaning) but most of the time it's
worked.  I've narrowed it down to the leftmost (#1) bit.

The start/stop selector lever was especially stuck, so I assume that would
be one of the key elements preventing the keyboard signal from getting sent
to the rest of the unit.

I'll continue my surface cleaning, but I suppose a more permanent loop
supply solution could be a consideration.  That being said, these 9V simple
tests have indeed proven to result in a little joy, as you quoted.

My next issue to resolve is the carriage return, which was working fine in
my initial tests but now it seems that something isn't engaging in order
for the spacing to resume.  It only resets itself if I shut off the power
and get it on again after a while.

Regards,
Jomar

On Wed, Feb 7, 2024 at 10:57 PM John Spigel <w1an.dxusa at gmail.com> wrote:

> Jomar, there are several contacts on the keyboard that mechanically
> prepare the 5 bit code that will cycle current in sequence with the motion
> of the motor. Your 9 volt battery connection to the selector magnets needs
> to be in series with these keyboard contacts at the end of the two wire
> leads connected to the unit. Pressing a key after turning the motor through
> several rotations will activate the open closed sequence to the magnets.
> Note that for a unit that has been sitting for years, those contacts on the
> keyboard may be quite dirty and need proper gentle cleaning.  Cycle motor
> thru several times after pressing a key and watch the magnets. This is
> again a simple test.
>
> Best regards,
> John S.
>
> Hi John,
>
> So I put a 9V battery directly onto the magnet leads as you mentioned.
> (Its reading was a little less than 9V, so after repeated
> connect/disconnect sequences the audible magnet clicking diminished.)
>
>
> The magnet engages, but upon pressing keys, the magnets do not respond.
>
> Would this be a sign of something not completely free in the clockwork?
> Manually turning the motor moves the assembly for one keystroke but remains
> idle after.
>
> Regards,
> Jomar
>
> On Mon, Feb 5, 2024 at 11:47 PM John Spigel <w1an.dxusa at gmail.com> wrote:
>
>> Jomar, your Model 26 may have the keyboard and selector magnets already
>> wired and ready to go. Make doubly sure everything is freed up and lubed
>> before hitting with 120VAC. Unpowered try connecting a little 9V battery
>> across the two loop leads and listen and see if the magnets activate.  Try
>> typing and see that the magnets respond. If you are confident all is freed
>> up, power the machine, keeping the 9V connected and see if the machine
>> stops free running. If so, try typing and see what happens. This is of
>> course just a basic test. Perhaps with a little joy.
>>
>> Note that the magnets will need to be in parallel for 60 Ma and that the
>> Break switch will need to be closed to complete the circuit to the magnets.
>>
>> Best regards, John W1AN
>>
>> On 06-Feb-24 04:04, Mike McAuley wrote:
>>
>> Jomar,
>>
>> Are you setting this up to be a RTTY station? If so, if you are going to
>> be sourcing a demodulator, why not get one with a built-in loop supply,
>> e.g. a HAL ST-6000.
>>
>> Just an idea...
>>
>>
>> Mike
>>
>>
>>
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>
> >>> Jordan Spencer Cunningham's GreenKeys Search Tool:
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> >>> 2002-to-present greenkeys archive:
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> >>> 1998-to-2001 greenkeys archive:
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