[GreenKeys] My Introduction

[John, W9DDD]

Welcome Mike,

At least it appears you didn't lose your collection during a move like I 
did.  I'm starting over.  Having fun in spite of hitting a few stumps. 
Just a 28KSR with some sort of brown dirt on it and cabinet rust.

I wasn't thinking of adding tapr gear to the  collection, but then I saw 
the amazement and curiosity of some nieces and nephews over the week 
end. Paper tape as data storage is part of the history.

John, W9DDD

On 3/4/2019 10:42 PM, Mike Arrington wrote:
> Hello,
> 
> I’d like to introduce myself. I’m Mike Arrington. I’ve been a member
> of Green Keys for several months now, lurking and going through the
> archives.
> 
> Back in the early 1970’s, I purchased the following from an auction at
> a local university:
> 
> . Teletype Model 14 TD (2)
> . Teletype Model 14 Reperforator
> . Teletype Model 15 Page Printer (KSR)
> . Teletype Model 28 KSR (parts missing)
> . Kleinschmidt TT-271/FG and TT-271B/FG (In their boxes as shipped
> from Tinker AFB)
> 
> Later adding
> 
> . IBM 029 Keypunch
> . Teletype Model 33 ASR
> . Cincinatti Milacron CIP/200B Minicomputer
> . Several mechanical and electronic calculators
> . Teletype ED51ET from an auction site
> 
> There is much wisdom and knowledge on this list and I’ve tried to
> absorb as much as I’m capable of. Many thanks to all of you.
> Additional thanks to Gil for maintaining this list.
> 
> Much thanks to all the web sites that have documentation on these
> beautiful machines. www.navy-radio.com has been especially helpful.
> 
> What am I working on?  For the last couple of months, I’ve been
> working on the Model 15 KSR, carefully disassembling, cleaning, and
> oiling, trying not to disturb any adjustments. Last week, I purchased
> a Heathkit HD 3030 Terminal Interface, mainly for the loop power
> supply. The Model 15 worked fine locally. I then realized that I could
> use this with ITTY. It didn’t work. I cleaned up a couple of pots, and
> aligned the unit using tones generated with Audicity. Now the Mark and
> Space LEDs were blinking. I hooked it up to the Model 15 and, nothing.
> I checked the loop power supply. Over 100 mA and constant marking. A
> transistor had shorted. I replaced that tonight and hooked up the
> Model 15 and fired up ITTY. The TTY started printing perfectly. It
> could use a bit of adjustment though. My main problem at this point is
> rusted, damaged, or missing key caps.
> 
> I’ve also started working on the Model 14 Reperforator. It’s pretty
> much glued together. I had this working in the ‘70s, but probably used
> 3-in-1 oil or WD-40 to lube it. Very bad idea. I’m slowly freeing it
> up.
> 
> 73
> Mike Arrington, KF5IIG
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