[GreenKeys] Newbie setting up an m26

[John Spigel]

> 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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>
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