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I use iGuidance with an OnCourse receiver I picked up from buygpsnow.com for $50. The OnCourse receiver replaced a GlobalSat that wouldn't charge any more. The reason I like running the gps through my phone is that I can run lots of different programs - AstroNavigator, BackCountry Navigator, Globe, etc. - all using the gps at the same time. I wouldn't be able to do any of that with a standalone. - sheureka
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Do good. Be kind. Have fun.
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