Hi Dennis.

Have you checked what is available here:
http://www.remoterig.com/wp/

73, Yngvi TF3Y

On Wed, Mar 7, 2018 at 1:30 AM, Dennis Ashworth <dennisashwort...@gmail.com>
wrote:

> My original post (below) morphed into a thread on standards, etc ... the
> discussion was insightful and useful in defining my solution to question #1
> below. Thanks.
>
> Question #2 remains. How do I remotely switch between 4 positions on an RX
> antenna switch (e.g. K9AY switch box) via some kind of Windows based UI.
> Ideas?
>
> Thanks
> Dennis, K7FL
>
>
> Sent from my iPad
>
> Begin forwarded message:
>
> > From: Dennis Ashworth <dennisashwort...@gmail.com>
> > Date: February 24, 2018 at 2:23:20 PM EST
> > To: "elecraft@mailman.qth.net" <elecraft@mailman.qth.net>
> > Subject: Advice needed: Remote Station Enhancement
> >
> > I’ve been remoting my K3, KPA500, KAT500 station via the RemoteRig boxes
> and K3/0 mini for two years with solid results. Later this year, I want to
> make several enhancements, including the replacement of the KPA500 and
> KAT500 with a KPA1500. The amp/tuner should be a fairly straightforward
> hardware replacement, but it does necessitate a few station changes which
> I’m not certain how to implement. Let me explain and hopefully the masses
> have ideas/approaches for consideration.
> >
> > 1. I feed a HyTower vertical (optimized for 40M & 80M) on all bands.
> Where the driving impedance is close to 50 ohms on 40M & 80 (my bands of
> interest) there has been no attempt to match the HyTower on other bands.
> With the KAT500, matching was not a problem and I reduced mismatch losses
> on the feed line by using hardline from the in-shack tuner to the antenna.
> >
> > When I switch to the KPA1500, operation on the unmatched bands might
> prove problematic. To address this, I plan to provide switchable matching
> networks to transform the HyTower drive impedance on each band to something
> the KPA1500 can match. I can design the required impedance transformation
> networks, but not sure how to automatically select the various (relay
> based) impedance networks required for each band. Clearly, I need to grab
> band data from the K3, but what’s the best hardware to use for this task?
> >
> > BTW, I want to power the KPA1500 ON with the K3, which requires a
> Y-cable modification, or perhaps one of the N6TV boxes?
> >
> > 2. I want to interface a K9AY RX antenna 4 position switch to some sort
> of UI that I can access remotely. I can design an electrical interface to
> the K9AY switch, but controlling and monitoring remotely is the issue.
> Ideas?
> >
> > 3. I have a Windows computer available at each end of the radio circuit.
> The only other hardware is a SignalLink used for digital mods.
> >
> > 4. Configuring the station for future antenna enhancements (e.g. SteppIR
> if we live long enough to see sunspots return!) are great if they come
> without significant reliability impacts.
> >
> > Any ideas how to accomplish the required switching/monitoring?
> >
> > Thanks
> > Dennis, K7FL
> > Currently in Panama City, Florida
> > Station in Battle Ground, WA
> >
> >
> >
> >
> >
> > Sent from my iPad
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