[GreenKeys] Model 28 Drive Voltage

[Bob Camp]

Hi,

Back in the good old days of running 15's about the only option in 
driving them was the choice between series or parallel connecting the 
magnets. Both ways you pretty much needed a high voltage loop supply. 
On a 28 things seem to be a bit different. The magic little vacuum tube 
keyer drives the magnets so as far as I can see there is no real need 
for a 60 ma / high voltage loop.

Assuming I haven't missed something so far here's the question: How low 
a voltage can you reliably drive the keyer tube with?

Of course if the first part is off then the question makes no sense at 
all ....

	Enjoy!

		Bob Camp
		KB8TQ