[GreenKeys] reperf power backspace - how was it used?

[Leanne]

Nick, in another lifetime on a galaxy far away, I used to cut traffic on a ksr and a reperf w/power backspace. It was a life saver for those oops in typing 
where you could backspace the tape and letter out the mistakes.
Leanne (who doesn't do that anymore)
From: Nick England 
Sent: Thursday, March 16, 2017 1:29 PM
To: Greenkeys 
Subject: [GreenKeys] reperf power backspace - how was it used?

I have been getting a few M28 standalone reperfs running lately. Several have power backspace which I can understand would be hooked up to a keyboard key in an ASR or KTR. 

But the ones I have are installed in standalone (ROTR) units with no keyboard. Was there cabling to remote backspace from a KSR keyboard somewhere else? Or do I just have random reperfs intended for ASR or KTR use that have been stuck into these ROTRs sometime in the last 50 years? 


A similar question goes for non-automatic tape feed-out, but that could just be a button switch on the ROTR


If you haven't seen this feature, power backspace is a solenoid operated gizmo which would back up the punched tape one character so you could type a LTRS character to then correct a mistake. The power comes from a crank arm on the end of the selector shaft -
http://www.navy-radio.com/tty/reperf/tt192-110619-04.jpg

A cool feature is on chadless tape reperfs where a rotating bar has fingers to push the chad "lids" back into the tape so it doesn't get caught when trying to back up. You can see the fingers poised above the tape here -
http://www.navy-radio.com/tty/reperf/tt192-ug-1205-03.jpg


Yours in teletypery,

Nick England K4NYW

www.navy-radio.com



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