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

[W2HX]

Oops!, Steve. Don’t listen to me! Hihi
Eugene


From: Nick England <navy.radio at gmail.com>
Sent: Friday, December 4, 2020 1:02 PM
To: W2HX <w2hx at w2hx.com>; Greenkeys <greenkeys at mailman.qth.net>
Subject: Re: [GreenKeys] Hall ST-8000 and driving / switching a loop?

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<mailto: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<mailto:greenkeys-bounces at mailman.qth.net> <greenkeys-bounces at mailman.qth.net<mailto:greenkeys-bounces at mailman.qth.net>> On Behalf Of highpwr at bellsouth.net<mailto:highpwr at bellsouth.net>
Sent: Thursday, December 3, 2020 10:48 PM
To: GreenKeys at mailman.qth.net<mailto: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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