[GreenKeys] TT-4A/TG
Duncan Brown
duncanancy at earthlink.net
Sat Jun 22 11:05:57 EDT 2019
Steve,
Yes, I agree. That was what I was trying to say. On the TT-98 (&
printers of the FGC-25 family & a special version of the TT-4 = TT-722),
when the typebasket gets to the right margin, a LOCAL LF & CR are
generated mechanically. There is no automatic LF from a CR received
electrically on any of the Kleinschmidt mechanical printers. ( I don't
know about the "electronic" printers, such as the AN/FGC-80 aka Model 311.)
have fun,
Duncan
On 6/22/2019 08:15, Steve Garrison wrote:
> I thought the TT-98 only generated the LF along with CR when it was
> set in motion by the 'end of carriage movement' (but that's not the
> proper name!) mechanism at the far right margin (if properly adjust;
> it could also be disabled as well). If you entered a CR or one was
> received before reaching the right margin, all you got was a CR. I
> know I have copied over-strike TTY art with my 98s.
>
> Steve G./N4TTY
> Sent from my iPhone
>
> On Jun 22, 2019, at 7:10 AM, Mark Foltarz via GreenKeys
> <greenkeys at mailman.qth.net <mailto:greenkeys at mailman.qth.net>> wrote:
>
>> Duncan, Excellent advice. I will continue with this after the field
>> day operations.
>> tnx
>> Mark
>>
>> On Friday, June 21, 2019, 5:09:23 PM EDT, Duncan Brown
>> <duncanancy at earthlink.net <mailto:duncanancy at earthlink.net>> wrote:
>>
>>
>> Mark
>>
>> On 6/20/2019 22:28, Mark Foltarz 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.
>> Sounds like something is sticking in the selector area. You need to
>> look at the actual code to get an idea of what is sticking. When you
>> type "T", what dioes it type? Is it always the same error? "T" is
>> 00001. What is the error character? Is there a relationship in the
>> code? ie, does it type "O" = 00011?
>>
>> Type a string of RYs. R is 01010, "Y" is 10101, so you are
>> alternating the bits and all the levers that make up the selector
>> mechanism. By looking at the error characters, you can see what bits
>> are sticking. Look at the levers and see if any are sticking.
>>
>> Try running 5-10 lines of RYs and see if things get better.
>> Sometimes on a machine that has sat for a while, it just needs to be
>> loosened up. make sure things are well lubricated, but keep oil away
>> from the armature and magnet pole faces. Clean the pole faces with a
>> clean sheet of paper.
>>
>>
>>> Also the carriage return button does not cause a carriage return
>>> line feed.
>>
>> Carriage Return and Line Feed are separate functions. Some printers
>> would automatically generate a local CR & LF when the type basket got
>> to the right end, but the TT-4A did not. ( There was a version of the
>> TT-4 designed for RTTY/RATT that did, but it had a different model
>> number. The TT-4's big brother, the TT-98, had local CR-LF at end of
>> line.)
>>
>>> 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.
>>
>> Leave the Range control at about 60 and adjust the Armature for best
>> copy while receiving RYs. What are you using to generate a test
>> signal? Something other than the keyboard? You need another source
>> that you know generates a good signal.
>>
>> Good luck & have fun,
>>
>> Duncan
>> K2OEQ
>>
>>
>>>
>>> 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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