[GreenKeys] TT-4A/TG

Thu Jun 20 18:25:50 EDT 2019

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

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> 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>> 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>> 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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