[GreenKeys] TT-4A/TG

Alf Fisher alffisher2 at gmail.com
Sat Jun 22 02:56:41 EDT 2019 

In the museum, I've got a Creed model 54RO that has auto LF.

If I send it a CR, it does CR, LF

If I send it CR, CR LF, I get CR, LF, CR, LF, LF which is 3 line feeds 
and that really wastes paper!

Alf, G3WSD


On 21/06/2019 11:44, Steve Garrison wrote:
> I've heard that, just never saw one during my time in the USAF.  And 
> you'd still have the issue of the character printing on the return to 
> the left margin if the return wasn't fast enough.
>
> If two CR were received did you get  two LF as well?
>
> Steve G./N4TTY
> Sent from my iPhone
>
> On Jun 21, 2019, at 5:47 AM, hwhall at compuserve.com 
> <mailto:hwhall at compuserve.com> wrote:
>
>> I know some teletype machines had a LF on CR option even back with 
>> Model 15 machines.
>>
>> Wayne
>> WB4OGM
>>
>> -----Original Message-----
>> From: Steve Garrison <steve.n4tty at gmail.com 
>> <mailto:steve.n4tty at gmail.com>>
>> To: Mark Foltarz <Foltarz at rocketmail.com <mailto:Foltarz at rocketmail.com>>
>> Cc: greenkeys <greenkeys at mailman.qth.net 
>> <mailto:greenkeys at mailman.qth.net>>
>> Sent: Fri, Jun 21, 2019 3:32 am
>> Subject: Re: [GreenKeys] TT-4A/TG
>>
>> I've never seen an automatic LF after a CR.  There always has to be a 
>> LF after the CR unless you want to over print the line like what gets 
>> done on some TTY art printouts.  In fact it was SOP to issue the 
>> sequence CR CR LF at the end of a line (even a short line).
>>
>> Steve G./N4TTY
>> Sent from my iPhone
>>
>> On Jun 20, 2019, at 10:28 PM, Mark Foltarz via GreenKeys 
>> <greenkeys at mailman.qth.net <mailto:greenkeys at mailman.qth.net>> wrote:
>>
>>> Duncan,
>>>
>>>     I tried the loop  through the keyboard and it is still typing funny.
>>> If I hit a "T" for example it will mostly type a "T" but it seems to 
>>> often then type another character out of the blue.
>>> Also the carriage return button does not cause a carriage return 
>>> line feed.
>>> I have  moved around the Armature to the point where the magnet 
>>> engages  the printer, and I have slowly moved through the Range 
>>> settings. Not having much luck for a clean print.
>>> Not sure where to look next.
>>>
>>> tnx
>>> Mark
>>>
>>> On Thursday, June 20, 2019, 6:26:11 PM EDT, Duncan Brown 
>>> <duncanancy at earthlink.net <mailto:duncanancy at earthlink.net>> wrote:
>>>
>>>
>>> Francis,
>>>
>>> Don't worry too much about the motor speed yet. (Motor speed only needs
>>> to be set ~ +/- 10% for proper operation. (ie, a 60WPM machine like the
>>> TT-4 can copy 66WPM European transmissions.)
>>>
>>> First test is to connect your ST-5000 TU to the TT-4 terminals 1 & 4,
>>> with 5 strapped to 6 and 2 strapped to 3.  Polarity doesn't matter 
>>> other
>>> than which way the meter reads. (Other, later, Kleinschmidt machines
>>> like the  TT-76 &TT-98 are polarity sensitive.)
>>>
>>> With the loop connected, you should be able to type on the keyboard and
>>> and see what you type on the printer. The motor speed won't matter,
>>> since both keyboard & printer are at the same speed.  If it does not
>>> print what you type ("garble"), try adjusting the "Armature" and 
>>> "Range"
>>> controls. "Range" will normally be set about 50-60.
>>>
>>> A better oil than sewing machine oil is SAE20.  3-in-One makes a 20 wt
>>> oil that is good.  If the machine has not been run in a while, it may
>>> need to run for 10-20 min. to get the lubrication worked in and loosen
>>> things up. A good grease is Lucas Red-N-tacky.
>>>
>>> I spent my year in Viet Nam keeping TT-4s running.
>>>
>>> Good luck & Have fun,
>>>
>>> Duncan Brown, K2OEQ
>>> USASA    31J30
>>>
>>> Antique Wireless Assoc. Museum,
>>>   Asst. Curator, Commercial Equipment
>>> (also chief TTY op & repairman)
>>>
>>> www.antiquewireless.org <http://www.antiquewireless.org>
>>>
>>>
>>>
>>> On 6/20/2019 17:54, Mark Foltarz via GreenKeys wrote:
>>> > Francis,
>>> >
>>> >  Read the manual on the novel method of speed control for the motor.
>>> > That shaft sticking out of the motor that the three dots on the plate
>>> > is how you will set the speed.
>>> >
>>> > There is a tuning fork in the cover of the TTY.  You will notice 
>>> there
>>> > are thin l metal  plates at the top of the fork.
>>> > You strike the fork and look at the dots  through the vibrating metal
>>> > plates.
>>> >
>>> > Here is the fun part :  Push the rod sticking out of the motor ( yes,
>>> > while it is running) to slow the motor down. Pull the rod to speed it
>>> > up.   The idea is  see  a ball as stationary as possible through the
>>> > vibrating tuning fork.
>>> >
>>> > If you find that is will not go either faster or slower you have
>>> > reached the end of travel on the gear the set the speed. Remove the
>>> > three dotted plate and then the governor cover and manually adjust 
>>> the
>>> > gears to some point where you can restart the motor and adjust with
>>> > the rod.
>>> >
>>> > Frankly I am thinking of using a variac for fine adjustments !
>>> >
>>> > I still don't have mine making copy yet. It might be the adjustments
>>> > on the TTY or even my test generator may not be good.  I have to 
>>> check.
>>> >
>>> > Don't forget to order a new ribbon. Reinking does not work - at least
>>> > not for me.
>>> >
>>> > 73
>>> > Mark
>>> >
>>> >
>>> >
>>> > On Thursday, June 20, 2019, 11:28:12 AM EDT, Francis S
>>> > <fsurovec at gmail.com <mailto:fsurovec at gmail.com>> wrote:
>>> >
>>> >
>>> > Mark....
>>> >
>>> > Gotta thank you for the quick response to my email....... I see the
>>> > switch on the side that indicates LINE/DC LINE so your info clears
>>> > that up for me. I ordered some sewing machine oil and other stuff to
>>> > lube the machine before turning it on.... everything turns smoothly
>>> > when I turn the motor by hand. It was in the attic of another ham op
>>> > for years and years..... when I got it I was very excited due to it's
>>> > condition ....  but was worried about the line current situation. I
>>> > retired and due to health issues with my wife the unit was in my 
>>> attic
>>> > for several years too! Things (health wise) have settled down of late
>>> > and I hope to be able to get into the shack and hook this up. I don't
>>> > recall any input wires going to the magnets on the unit though..... I
>>> > think all I saw was the power cord..... gotta take a closer look see
>>> > and see what I have to work with.
>>> >
>>> > The manuals will be a great help too...
>>> >
>>> > 73,
>>> >
>>> > Francis
>>> > WA3GGV
>>> >
>>> > On Sat, Jun 15, 2019 at 11:43 AM Mark Foltarz 
>>> <Foltarz at rocketmail.com <mailto:Foltarz at rocketmail.com>
>>> > <mailto:Foltarz at rocketmail.com <mailto:Foltarz at rocketmail.com>>> 
>>> wrote:
>>> >
>>> >    Francis,
>>> >
>>> >      >From the manual :
>>> >
>>> >    a. Receive Circuit During Message Reception (TT-4(*)/TG and
>>> >    TT-335/TG. The receive circuit of the TT-4(*)/TG and TT-335/TG is
>>> >    capable of operating with neutral teletypewriter impulses only.
>>> >    The signal current level in the receive circuit may be either 60
>>> >    ma (LINE switch in DC LINE position) or 20 ma (LINE switch in
>>> >    VOICE FREQ LINE position).
>>> >
>>> > 
>>> http://rattrig.com/Documents%20&%20Manuals/TTY%20Gear/TM%2011-5815-206-34.pdf
>>> >    pg 84
>>> >
>>> >    On Saturday, June 15, 2019, 4:58:41 AM EDT, Francis S
>>> >    <fsurovec at gmail.com <mailto:fsurovec at gmail.com> 
>>> <mailto:fsurovec at gmail.com <mailto:fsurovec at gmail.com>>> wrote:
>>>
>>> >
>>> >
>>> >    Mark.......
>>> >
>>> >    Just wondering if you ever got any info on lubrication for your
>>> >    TT-4A. I also have one of these machines that has not been used in
>>> >    many years and it needs to be lubricated too. Also, can you shed
>>> >    any light as to what you are using for a TU? I have an ST-5000 but
>>> >    the loop current is 60ma..... I believe this machine uses 20ma.
>>> >    When I first got this machine I plugged it in and it ran open
>>> >    nicely but after doing some research and finding that the loop
>>> >    current was so low I didn't pursue it. Now that I have the time I
>>> >    would like to get it up and running.
>>> >
>>> >    Thanks in advance if you can help me with these two questions.
>>> >
>>> >    73,
>>> >
>>> >    Francis
>>> >    WA3GGV
>>> >    Cleveland, GA
>>>
>>> >
>>> >
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>
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