[GreenKeys] Chadless tape and a M14 Transmitter-Distributor

[John, W9DDD]

Yes the round holes will be too small.  All later production TDs 
probably had the rectangular holes to work with either kind of tape.  I 
never saw a round hole version coming out of Bell System surplus in the 
sixties.

I sent Paul several lids last year, but I don't recall which style they 
were.  Probably round hole removed for a mod kit for chadless.

If he doesn't have the correct ones for chadless, perhaps drilling the 
round holes larger would work, but certainly not as well as the correct 
lid.

John, W9DDD

On 1/31/2021 11:02 PM, Ralph Mowery wrote:
> I have seen some different lids.  One had small round holes that were too
> small for the chads and the other has slots where the chad can rise up.
> 
> Ralph ku4pt
> 
> 
> 
> 
> 
> -----Original Message-----
> From: greenkeys-bounces at mailman.qth.net
> [mailto:greenkeys-bounces at mailman.qth.net] On Behalf Of Jim Cooper
> Sent: Sunday, January 31, 2021 11:35 PM
> To: ac8y at thetower.us; greenkeys at mailman.qth.net
> Subject: Re: [GreenKeys] Chadless tape and a M14 Transmitter-Distributor
> 
> 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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