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 > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to t...@tf3y.net -- http://www.tf3y.net ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com