[GreenKeys] final question on ST-6...

[Eugene Hertz]

Ok...

The rheostat on the back of the ST-6 that controls the loop current...

1. It gets VERY hot. REALLY hot! Is this normal? Is there any way I could reduce the heat?

2. Seems like I can get the loop current to 60ma at the lowest but I can raise it to higher (not much) probably to compensate for more devices on the loop..Question is, i would imagine my 28KSR could probably work off lower voltage and/or current, no? 

Is there some way I could reduce the power consumed by the rheostat, perhaps by reducing the current through it or voltage across it? I recall some folks talking about running a loop on 80v instead of 100+v.
thanks
Eugene