[GreenKeys] Leaving ASR-33 powered on...?

[Jordan Spencer Cunningham]

It just so happens that an idle line timer dropped on eBay over the weekend
along with a handful of 28s and other equipment (someone must be clearing
out their stash as it's all from the same seller and for reasonable prices
considering there are people on eBay trying to sell 15s in pretty bad shape
for thousands of dollars!):

https://www.ebay.com/itm/Teletype-Idle-Line-Motor-Control/132849886265

No relation to seller and other such standard disclaimers.

You could probably build one of these yourself, though I don't know exactly
what the guts would be. I'm controlling my 15 and 19 through a Raspberry
Pi, and I have the Raspberry Pi set up to control some relays for the
motors *and *current loops. Since I know via software when the loops are
going to turn on and messages come through, I didn't have to build anything
special like this to sense when the loop is idle or not-- the Pi just
switches on the loop, the motor, and then sends messages through the loop.
Pretty neat contraption, though-- I'd never heard of them before I saw this
one show up on eBay.

--Jordan

On Mon, Nov 26, 2018 at 11:25 AM tony.podrasky <tony.podrasky at gmail.com>
wrote:

> There was a thing called an "idle line timer".
>
> You'd connect it into the loop, and plug the teletype
> into its outlet. When the loop keyed, it closed a relay
> and the machine would come to life. You could adjust the
> timing of how long it would keep the relay closed.
>
> It might be "me" - but I wouldn't leave the 33-ASR running
> if it's not being used - it's almost entirely hardware and
> there is only so much life in the machine.
>
> UE,
> K2EAA - TONY
> NNNN
> ZCZC
>
>
> On 11/26/2018 10:05 AM, Barnett, Andy wrote:
> > Hi folks, I know the ASR-33 is a light duty machine and apologies if
> > this has been covered before, but I would appreciate your thoughts –
> >
> > 1.            OK to leave my ASR-33 powered up and running? (but not
> > printing much, mostly waiting)
> >
> > 2.            Has anyone ever built a gizmo that powers on the Teletype
> > from cold when there’s some activity on the serial line… and perhaps
> > powers off after no activity after a while?
> >
> > Thanks!
> >
> > Andy
> >
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