[GreenKeys] TT-4A/TG
Steve Garrison
steve.n4tty at gmail.com
Fri Jun 21 05:31:34 EDT 2019
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> 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> 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
>
>
>
> 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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