Hi Phil, I'm a retired law enforcement radio tech. To answer your question, many agencies that have multiple radio systems ... both simplex and repeater ... do use GPS location to "steer" the frequency selection of their mobiles. Some have all their repeaters on the same RF frequencies and use CTCSS tones to select the desired station. Lincoln County, OR does this, for example.
Such systems require complex software that custom-tailored to the area topography and can be made more complex by mountain terrain that can severely impact the areas covered from a given radio site. The software and hardware to do this "steering" is usually provided by the equipment manufacturer, and I -think- there are after-market providers. I'll investigate more, but I think you'll find it's beyond the "means" of most of us. (:-) 73! Ken - K0PP On Tue, Sep 10, 2013 at 4:46 PM, Phil Hystad <[email protected]> wrote: > This question has nothing to do with Elecraft rigs (well, possibly > remotely if I assume a KX3 as mobile with the future to be provided 2-meter > option). > > Yesterday I drove to Portland from my QTH of Kirkland near Seattle. This > is a 3 1/2 hour trip down I-5 (and, the return). In the Seattle area, I > had my 2-meter mobile rig in my truck sitting on a repeater frequency but > it was not too long before I was out of range of that repeater. I wondered > briefly about changing to some nearby closer repeater but it was not that > important to me but I started thinking about an automated way to do this. > > I have GPS in various guises with my Truck (iPhone, iPad, and my little > Garmin GPS at times), so what if I had a way of extracting location, > looking up location of nearest repeater in my database (if I had one), and > then having a interface to my rig to update the repeater frequency, split > offset, tone, etc. All very possible. > > So, my question: Does such a thing now exist? I don't pay enough > attention to repeater-life to know what other hams may have already created? > > 73, phil, K7PEH > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[email protected] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
