Brian Sponcil wrote:
It may have something to do with the installation costs. If you're going to
install the 300XL as an IFR unit you'll need a CDI and an annunciator - not
cheap. I *THINK* that you can probably install it as a VFR only unit which
would seemingly make it a better deal than the 250XL.

For an IFR install, you also need a means to interface it to your altitude
encoder. This often means purchasing a serializer to convert from grey
code (I think) to RS-232c. I know that on my GX-60, you can go into
system setup mode and tell it to behave like a VFR-only GPS.

If you're seriously thinking about these two units, I definitely think you
should go with the 300XL, just in case you want to get it IFR certified at
a later date. A used UPSAT GX-60 is probably a good buy, too.

--- Jay


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