[GreenKeys] i-Telex, revisited...

[Mark Hall]

Hello folks,

Here's Steve G./N4TTY's reply to my question about an "idle timer" feature
for i-Telex. I'm not sure if Teletype or WU
might have made a feature like this for machines or not, but this is a
start... If anybody else on here has ideas on this,
by all means "chime in"! And thanks!!

"Mark,



I use an “autostart” device all the time.  It is just a small circuit that
is inserted in to the loop that controls a relay that applies power to the
machine when the continuous mark condition goes away.  Then after a time
out period of continuous mark the relay opens up again and shuts off the
power to the machine.  The board that I use was designed by a member of our
GK list.  Jack, K0TTY (now K2TTY) if I remember correctly.


Steve G./N4TTY"

Something like this would seem to be fairly straightforward to get parts
for, build and add into something else like the loop supply mentioned.
Our i-Telex friends in Germany seem to be getting pretty close to making
the solution for USTTY 60wpm machines work with i-Telex. I'm tickled
to death at the prospect of giving one of my machines the opportunity to
run some more. It's like one of those good songs that has you yelling
"More Cowbell Please!!!". Love that mechanical noise!

73 de KE5LIB!!

Mark

Future Teletype Wizard and Sage

On Mon, Feb 1, 2016 at 12:51 PM, Mark Hall <ke5lib001 at gmail.com> wrote:

> Thanks Steve!
>
> I had a sense that the device Henning referred to was something like an
> "autostart". I don't know if Teletype had a feature like this in the
> machines, but
> I would not be surprised. I don't think it would take much to build it,
> and it would be pretty straightforward to add in to something besides the
> machine.
> I'll ask Jack about it. May I reference your reply to me when I contact
> him? Many thanks and 73!
>
> Mark KE5LIB
>
> On Mon, Feb 1, 2016 at 10:13 AM, Steve Garrison <steve.n4tty at gmail.com>
> wrote:
>
>> Mark,
>>
>>
>>
>> I use an “autostart” device all the time.  It is just a small circuit
>> that is inserted in to the loop that controls a relay that applies power to
>> the machine when the continuous mark condition goes away.  Then after a
>> time out period of continuous mark the relay opens up again and shuts off
>> the power to the machine.  The board that I use was designed by a member of
>> our GK list.  Jack, K0TTY (now K2TTY) if I remember correctly.
>>
>>
>>
>> Steve G./N4TTY
>>
>>
>>
>> *From:* GreenKeys [mailto:greenkeys-bounces at mailman.qth.net] *On Behalf
>> Of *Mark Hall
>> *Sent:* Sunday, January 31, 2016 7:24 PM
>> *To:* greenkeys at mailman.qth.net
>> *Subject:* [GreenKeys] i-Telex, revisited...
>>
>>
>>
>> Hello everyone.
>>
>> I contacted Henning about i-Telex, and received this reply:
>>
>> "Hi Mark,
>>
>>
>>
>> thank you for your email, nice to hear from you again.
>>
>> Well, finding an original Telex machine within a reasonable distance might
>>
>> be quite a challenge in your large country.
>>
>> But we are a good step forward in a software modification for 60WPM
>> machines
>>
>> without answerback unit. I have a test set-up  running in my workshop.
>>
>> But there is still some bug for outgoing calls that has to be fixed.
>>
>> Could you check if your 28KSR has a idle line timer switch installed?
>>
>> For the current modification it will be essential.
>>
>> I will explain what it is if you do not know it already:
>>
>> It switches the machine into stand-by mode (motor off) automatically
>> after 30 ~ 60 seconds
>>
>> after no character has been received or sent.
>>
>> Once there is a break on the line or you push a certain key or the
>> letters shift
>>
>> key it awakes again from sleeping mode and starts to print.
>>
>> If your machine has no such switch installed we will see if we can
>> implement also
>>
>> a hardware motor switch modification to the board.
>>
>> 73
>>
>> Henning DF3OE
>>
>> i-Telex: 92612, 55571"
>>
>> The item Henning describes might just be something Teletype might have
>> put in. With the mention of "Once there is a break in the line or you push
>> a certain key or the letters shift key
>>
>> it awakes again from sleeping mode and starts to print" almost sounds
>> like there could be an
>>
>> USOS (unshift on space) function going on in there somewhere. I replied
>> that I found no such
>>
>> device that comes close to the description of an "Idle line timer
>> switch", but then I am but a pup here, and don't know much.
>>
>> What all this sounds like is an "auto start" feature on a demodulator. I
>> have several demods I put to use for ITTY, including an ST-5 and ST-6, both
>> of which have the "auto start" feature, and a receptacle on the back of the
>> units to plug the machine motor power into, to do this.
>>
>> Do any of y'all have some insight to this baffling conundrum? It really
>> doesn't sound like our friends in Germany are too far away now from a
>> winning solution... Implementing an "auto start" feature to Fred's device
>> won't be that much of a stretch. For me, finding a former Telex machine, or
>> the T-39 call box, answer back and other gear to make a 28 KSR/ASR do all
>> this
>>
>> is pretty daunting to say the least. Paul Cembura has an answer back,
>> geared at 60 wpm, but making sure all the plumbing is kosher to do this
>> might be more than one would want to pursue. I'd rather opt for what Fred
>> is cooking up for now.
>>
>> Dumb looks and head scratching, blank stares and mumbling are welcome
>> too. All I can do is drool and make clicking noises...
>>
>> 73!
>>
>> Mark KE5LIB
>>
>> Future Teletype Wizard and Sage... yassah!
>>
>>
>
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