[NSRCA-discussion] Servo Signals

[mike mueller]

 Mark there's a guy Mike --- sorry I forgot his last name that comes to the contests that was an engineer for heathkit. He'll be at the Jim Hubbard this weekend. I'll tell him you had a Heathkit he will get a kick out of that. Mike

--- On Mon, 6/22/09, Atwood, Mark <atwoodm at paragon-inc.com> wrote:

> From: Atwood, Mark <atwoodm at paragon-inc.com>
> Subject: Re: [NSRCA-discussion] Servo Signals
> To: "'nsrca-discussion at lists.nsrca.org'" <nsrca-discussion at lists.nsrca.org>
> Date: Monday, June 22, 2009, 12:13 PM
> The old heathkit servos (mine anyway)
> were kit versions of the Kraft K-15 servos. 
> 
> In fact the whole radio I believe was a Kraft design. 
> -Mark 
> --------------------------
> Sent from my BlackBerry Wireless Handheld
> 
> 
> ----- Original Message -----
> From: nsrca-discussion-bounces at lists.nsrca.org
> <nsrca-discussion-bounces at lists.nsrca.org>
> To: General pattern discussion <nsrca-discussion at lists.nsrca.org>
> Sent: Mon Jun 22 13:06:18 2009
> Subject: Re: [NSRCA-discussion] Servo Signals
> 
> 
> Yes, as long as they are clean. That is the problem, it
> depends on contact between two components and the friction
> wears them out.
>  
> I remember years ago that the large heathkit (and possibly
> some Kraft) servos used variable capacitors for feedback.
> not much to wear.
>  
> Ok, Jay, how long ago were the "days" you were talking
> about? :-)  
>  
> Bob R.
> 
> 
> --- On Sun, 6/21/09, Jay Marshall <lightfoot at sc.rr.com>
> wrote:
> 
> 
> 
> I remember from my days in control systems theory that the
> analog computers were faster and more accurate than the IBM
> big iron computers. Analog pots are still cheaper, lighter,
> and higher resolution than digital encoders – as long as
> they are clean…
> 
> 
>  
> 
>  
> 
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