[GreenKeys] Chadless tape and a M14 Transmitter-Distributor

[ac8y at thetower.us]

Thanks to all who sent ideas.  This XD the lid with rectangular holes as
pictured.  I have made some progress based on the greenkeys responses.  


While single stepping through each bit by manually spinning the motor it
became clear that the pins were not opening the attached chad flaps far
enough to reach the switching threshold.  After precisely adjusting the
contact spacing I was able to get near perfect copy from a chadless tape
by sliding the tape over a table edge to open the chads.  Not really a
perfect solution but progress nonetheless.  With the flaps stuck shut
the pins can't sufficiently push them open.  This Ebay tape might not be
exactly orgiginal.  Maybe some differ tape would help. 

Mike AC8Y 

On 2021-01-31 23:35, Jim Cooper wrote:

> On 31 Jan 2021 at 20:46, ac8y at thetower.us wrote:
> 
>> Apparently different shims are
>> required on the XD retaining lid
>> plate for chadless tape. I messed
>> with lots of different
>> spacings--regular tape always works
>> and chadless tape never works. 
>> 
>> Any tricks, ideas, or suggestions?
> 
> The first step I would suggest is to turn 
> off the TD motor, put the chadless tape 
> in the reader head, and turn the motor 
> BY HAND, slowly in the direction the motor 
> normally runs ...  as the pins come up, look 
> through the slots and see where the pins are 
> relative to the chads.  It might be that the 
> advancing pawl that steps the tape ahead 
> one character might be a bit out of alignment. 
> 
> Jim  W2JC
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