[Elecraft] Remote Antenna Tuner

Sun Sep 7 14:49:01 2003

Francis:
  This is all very fine, I suppose, to tune an unbalanced load.  But what 
I'm interested in is a remote tuner with a truly balanced output, not using 
a balun.

best wishes,

dave belsley, w1euy

--On Sunday, September 7, 2003 10:46 AM -0400 Francis Belliveau 
<[email protected]> wrote:

> For those who wish to remote an Elecraft tuner using a separate control
> line I suggest you start by looking at
>   http://dbserv.maxim-ic.com/appnotes.cfm/appnote_number/723
> This is a good starting point for information to convert the RS-232
> signals to RS-422 or something that will make the long distance run.  All
> you should need is a single IC (Maxim has some good choices) and a
> weather-proof enclosure for the tuner.
>
> Note that I have no affiliation with anyu of these companies and I am not
> an EE.  I just know that I have seen RS-232 function correctly over
> distances of 500 feet which is well beyond that specified.  I also know
> that RS-422 is specified to be even better because it uses differential
> signals.  The web site above provides the technical information needed to
> make the conversion with minimal parts count.
>
>
> 73,
> Fran
>
>
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----------------------------------
David A. Belsley
Professor of Economics