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

[W9DDD]

That would work great, except it depends on how you are feeding the 33 a 
signal.  According to the description his box expects a serial loop at 
60ma (or perhaps also 20ma).

John, W9DDD

On 11/26/2018 12:39 PM, Jordan Spencer Cunningham wrote:
> 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 
> <mailto: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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