[GreenKeys] Chadless tape and a M14 Transmitter-Distributor

[Paul Wills (CKT&T)]

Attached is a photo of a chadless lid from a 14 TD.

PDW

On 2/1/2021 12:30 PM, John, W9DDD wrote:
> 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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