Dave ... let me guess ... you're single right?
Here's what I've come with so far Brettski ....
Here are a few links to a servo driver which will take the switched output of the RC receiver and run a servo to any position throughout its range of movement by means of pressing the "up/down" buttons.
Cost is $20 from these folks
http://www.york-electronics.com/index.htmYou can jump right to a nice little video which explains & shows it works ... you can ignore some of the advanced features like servo sweep ... most of what you'll want to see is in the first half of the video to get the idea.
As the builder is pushing on the buttons on the servo driver, envision yourself pushing the buttons on the RC unit from inside the house, and it doing the pushing of the buttons on the servo driver via the relays on the board of the RC unit. The servo responds to your commands via the servo driver into which your servo is plugged as per the video.
You'll need to solder a pair of wires onto the "up/down" switch contacts of the servo driver circuit board, and then attach those wires to the relay contacts of the RC receiver.
http://www.york-electronics.com/videos/ytv_wmv_cycler.wmvHere's a suitable RC unit which uses on/off functions rather than the one I mentioned earlier with variable output voltages, this one was mentioned by a previous poster.
http://cgi.ebay.com/RF-Wireless-Remote-C...1742.m153.l1262Took me quite a few hours to track this little unit down Brettski, I hope it isn't too complicated for you ... just thinkin' out loud, if the soldering onto the circuit board is going to be troublesome for you, I'll bet the builder of the servo driver would solder on some pigtails for you if you asked.
There still is the matter of getting this to run directly from the 12 volt battery in your gen-set, but we can work on that later. In the meantime, this could be run by 4 D cell flashlight batteries for a very long time.
Regards,
Lee