Machine control

I'm looking for an entry level machine control system to run my scraper. I currently have Specrta LR60 receivers so I would like something compatable with them but it's not a deal breaker.
All I want is a simple electric valve that controls my blade height via the receiver.
Any recommendations that aren't going to cost more than my used scraper? I looked at a CB40 but there doesn't seen to be much info on the interweb. My closest dealer is 2hrs away and won't offer advice unless I'm dealing...

Machine control

Machine control