[GreenKeys] What’s this?

[John, W9DDD]

So what energizes the solenoid, and how does the mod keep blanks from 
being punched?  At some time in the history there was a specification 
written that would reveal all.

John, W9DDD


> On Aug 2, 2019, at 11:04 PM, Jim Cooper <jim.w2jc at gmail.com> wrote:
> 
>> On 2 Aug 2019 at 22:50, John, W9DDD wrote:
>> 
>> Which makes no sense to me, why do
>> you need to delete a blank, it's a
>> NOP.
> 
> because if the loop goes open you will punch 
> miles of tape with only the tiny center holes ... 
> 
> 
>