[GreenKeys] Your mileage may vary- i-Telex vs actual Telex prepared model 32 or 33

[Steve Garrison]

Mark, not sure I understand your line of questioning.  Especially as it pertains to number 3.  It is my understanding that you need the "i-Telex device" regardless of whether or not you have a Telex capable Teletype or just a plain ole M28KSR like I do.  Unless of course I'm misunderstanding what you mean by the "i-Telex device."  I have my 'plain ole' M28KSR connected to a set of boards I got from Henning and crew several years ago.  That set of boards  is in turn connected to the Internet and provides for the "i" in i-Telex.  The set of boards is a power supply board that provides the loop current for the TTY and the correct voltage for all the logic circuitry in the "device."  You have to provide a transformer (I just used the one they recommended) to provide power from your AC outlet to the device.

If you have a Telex compatible TTY that has the complete "call control unit" the you order one type of the i-Telex device, or if you have a non-Telex TTY such as the M28KSR, then you order the other type.  The only difference in the two is the board that connects to the loop.  You also have to provide an external relay for motor control when using the non-Telex device.  On a Telex ready machine the motor control is part of the call control unit.

Russ and Henning did I get it about right?

I have had no issues using my M28KSR vs having a Telex ready TTY.  In fact I find it to be a relief not to have to be concerned with using a call control unit.  One less point of failure to have to be concerned with.

Now if your wondering how do I make a call if I don't have a call control unit,  it's simple (Henning and crew have take care of that), I just hit the "BREAK" key, that wakes the system up, turns on the motor, types "NO?" on the TTY, and I just type in the number that would have been "dialed" on a call control unit equipped machine.  Easy peasy!

Steve G./N4TTY
Sent from my iPhone

> On Jun 5, 2020, at 10:21 PM, Mark Hall <ke5lib001 at gmail.com> wrote:
> 
> For those gallant folk in Greenkeys who participate in i-Telex,
> whether with the i-Telex device or an actual Telex machine, I ask
> this-
> 
> #1- How difficult is it to locate a Telex prepared Teletype machine?
> #2- How much preparation is there to make it work for i-Telex?
> #3 For those using the i-Telex device- how well does it do its job?
> #4 For those lucky enough to have access to both? How do they compare?
> 
> Thank you in advance for your insights. The Greenkeys Community is one
> I owe much to, and thank you for sharing this fellowship with me over the 
> years I have been here. Thought I'd better say that while I'm still warm, vertical
> and breathing lol...
> 
> Very 73,
> 
> Mark
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