[GreenKeys] Kleinschmidt AN-98c/fg and TT LpR 59 project

[Duncan Brown]

Johnathan,

Welcome to Greenkeys!

The TT-98 (aka AN/UGC-4) was the basic teleprinter of the US Army and 
Air Force from about 1950 to about 1980.  Note that all teletypewriters 
are not "teletypes", only the ones made by Teletype Corp! This one is a 
Kleinschmidt.  The manuals for the TT-98 are  TM 11-5815-200-12 and TM 
11-5815-200-35. The -12 manual is the operator's manual and the -35 is 
the maintenance manual.  There are also manuals that list parts (they 
end in "P", but very few parts are available, so they aren't worth 
much).  These manuals are available on-line at 
http://rattrig.com/manuals/tm%27s.htm.  What hams refer to as "RTTY" the 
military referred to as "RATT".  The site http://rattrig.com covers the 
standard military tactical radioteletype installations of the 1950-70s.  
The TT-98 was the standard teleprinter in these units and also in fixed 
installations.

A reperforator receives the 5-bit teletypewriter code (from a wire line 
or radio) and punches the 5-bit pattern into a paper tape (it may also 
print the message on the tape).  The paper tape is used to store the 
message in a form that can easily be retransmitted.  The "brother" of 
the TT-98 printer is the TT-76 "transmitter/reperforator" (see 
rattrig.com).  It can punch tape directly from its keyboard 
("perforator"), punch & print tape from an incoming line, and read and 
transmit the prepared tape out to a land-line or radio.

Teletypewriter operators would usually prepare messages on tape first.  
This allowed some chance of correcting mistakes and meant that messages 
could be sent out at one time when the circuit was open.  There were 
also large teletypewriter relay systems that only used tape. These were 
mainly used by the military, but also by Western Union, FAA, etc.  These 
were known as "Torn-Tape Relay" systems, because someone had to tear an 
incoming tape off a reperforator, read the routing information off the 
tape, and then get it queued up on the proper tape reader to send it on 
its way.  See http://www.navy-radio.com/tty-relay-equip.htm for pictures 
of equipment & installations.

Have fun & good luck!

Duncan Brown, K2OEQ
USASA  31J

Chief TTY operator, repairman & Asst. Curator,
AWA Communications Museum
http://www.antiquewireless.org/
http://www.antiquewireless.org/museum/museum.htm  (present museum)
http://www.antiquewirelessmuseum.com  (future museum)






On 01-Jan-12 13:32, Jonathan Mc Donald wrote:
> Hello.
> My name is jonathan and I am new to greenkeys and teletype world.  I 
> purchased a Kleinschmidt an-98c/fg off of craigslist and would like to 
> restore them.  I know just about squat about teletypes.
>
> Questions:  Are these common or rare models?  Does anyone have a pdf, 
> txt, pics of manuals for them?  What in the blazes does a reperforator 
> do (in plain english)?  Will i be able to get these hooked up to my 
> computer/radio?
>
> Ive included a youtube of the sets if you care to laugh
> http://youtu.be/D-PDLFQD_S0
>
> Lastly, I am sure this will be the first of many email questions, so
> Hello greenkeys group.
> kg6tgr/jonathan
>
>
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