[GreenKeys] Hall ST-8000 and driving / switching a loop?

[Paul Heller]

It’s time for me to build a circuit try out an ST-8000 that’s been lying around here for a while. Why? Because the ST-8000 is rather cool looking. I’d like to see it in operation.  Thanks for the info. 

Paul
W2TTY

ITTY: 		HTTP://INTERNET-TTY.NET:8000/ITTY
ITTY100: 	HTTP://INTERNET-TTY.NET:8010/ITTY100
AUTOSTART: HTTP://INTERNET-TTY.NET:8030/AUTOSTART
EUROPE: 	HTTP://INTERNET-TTY.NET:8040/EUROPE

> On Dec 4, 2020, at 4:08 PM, Nick England <navy.radio at gmail.com> wrote:
> 
> 
> The manual says the ST-8000 is low voltage in/out only. Evidently the LP-1200 includes level converters as well as a loop supply.
> Nick 
> 
> 
>> On Fri, Dec 4, 2020 at 12:52 PM W2HX <w2hx at w2hx.com> wrote:
>> Steve, as long as there is one current supply somewhere in the loop you just connect up everything in series. I don’t have my 8000 in front of me but if you need more help, I can dig it out.
>> 
>>  
>> 
>> 73 Eugene W2HX
>> 
>>  
>> 
>>  
>> 
>> From: greenkeys-bounces at mailman.qth.net <greenkeys-bounces at mailman.qth.net> On Behalf Of highpwr at bellsouth.net
>> Sent: Thursday, December 3, 2020 10:48 PM
>> To: GreenKeys at mailman.qth.net
>> Subject: [GreenKeys] Hall ST-8000 and driving / switching a loop?
>> 
>>  
>> 
>> Using a HAL ST-8000 here for my RTTY ops, question since I don’t have the HAL mentioned LP1200 how would I drive say a Model 28 printer (which I believe has a loop supply built in) or something like a Kleinschmidt TT-76 which also has a loop supply.
>> 
>> In other words if I have a loop supply how do I switch / control it with the HAL St-8000.
>> 
>> Thanks,
>> 
>> Steve
>> 
>> KM4V
>> 
>>  
>> 
>> 
>> 
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