[Elecraft] Re: Homebrew Autotuner

[Stephen W. Kercel]

Instead of an exhaustive search, you might try a genetic algorithm.

73,

Steve
AA4AK


At 11:51 PM 9/13/2005 -0400, Mike WA8BXN wrote:
>  Don -
>If you can easily tune the tuner by hand ....   I always teach my
>programming students to just watch themselves manually performing the task,
>then write down a set of instructions so someone else could do that, and
>then write the program to follow those steps.
>
>Seems to me an exhaustive search trying all combinations has to find the
>lowest SWR, but that would take time. You could perhaps first run through
>your smart search method and if it gets close enough stop there, and if not,
>try all values.
>
>If you could get an approximation of the complex impedance of the load (not
>exactly sure how to do that offhand) you could then calculate what is
>approximately needed to best match it, and search around there.
>
>I will be interested in reading the ideas of others on this topic!
>
>73/72 - Mike WA8BXN
>
>
>-------Original Message-------
>
>From: Don
>
>
>A few months ago I maintained a brief correspondence with some on this list
>with an interest in a homebrew balanced autotuner. The project is nearing
>the point where I will be installing it into a K2 case. At the moment,
>though, I am having trouble coming up with a software algorithm that finds
>minimum swr and this message is a request for suggestions.
>
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