[Lowfer] Motor Driven VC

[Bill Ashlock]

Jay,

>Just depends on the loop Q you're running. When I was running high Q >mode 
>with mine I know I would blow right through the peak and out the >other 
>side if not careful.

Yes. Was thinking about using a voltage source for the motor that is 
proportional to the amount of time the button is pressed. Short duration 
actuations would generate a slow rpm. May just use a lot of series 
resistance or a thermister to do the job.

>There is really no need for super high Q anyway as long as the >background 
>noise overides the receiver noise floor by several dB. I >ended up 
>throttling back my loop Q.

I'm no fan of high Q loops, either, except for the fact that for a given 
number of turns the voltage output is proportional to the Q. Without a 
preamp my 6'X 6' loop has no voltage to spare (and I sure like the feel of 
the no-amp performance; same with the tree antenna). Suppose I should go to 
a smaller wire size and use more turns in order to keep the voltage up there 
but at a lower Q due to the increased Rac. My other 6'X 6' loop is wound 
with about 30T of #22 so that may be the one to use for this project.

>How's the code coming?

Not bad. I was doing pretty well with the Koch 15wpm characters at a 3wpm 
rate but the 5wpm rate is a different ball game. Not much time to think 
about the dots and dashes. I really get frustrated when I can't remember a 
simple character like a 'W' and I lose the next two characters as a result. 
But I think, again, the trick is to learn the complete character sound, not 
the individual dots and dashes - and this takes some time. The section of 
this program sending structured words is a lot easier because you can 
anticipate about 30% of the characters.

Bill

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