[GreenKeys] 28LP sprocket feed with vertical tab but no LF?

[Don Robert House]

Nick,

The typing unit is set up to print short one-line messages of  
importance...
such as flight information.  Some of these were used by Aeronautical  
Radio Inc. (ARINC)
Vertical Tab (VT) is normally FIGS K but could be assigned to any code  
the customer needed.
The operator does not want to have to look down into the window to see  
each message
for flight data...

Local line feed button turns on the 120VAC motor and releases the line  
feed clutch. Keep your fingers
away from the base when the machine is plugged in!

Don
K9TTY

Attached is an FAA application... Typically ARINC used the waterfall  
cabinets for there applications.

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On 11 Feb 2014, at 10:18 AM, Nick England wrote:

Howdy men - I have been working my way through the 28 waterfall
printer set that I acquired some time back. It has a mix of typing
units, one of which appears to be a friction feed converted to
sprocket feed (but lacking a few parts). It has the vertical tab drum
which I have no experience with but figured I could just ignore.

Local LF works OK, but when I sent it a LF character nothing happened.
Upon investigation, I see the stunt box has no LF function
bar/pawl/lever. Imagine my surprise! Is this normal? If so. did that
mean this unit can only type on lines designated by the vertical tab?
So what triggers the vertical tab?

Nick England K4NYW
www.navy-radio.com
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