Mark,

The NAVAir display on a PDA is only available in portrait mode. On
PCs, Tablets and EFBs is operates in both Portrait and Landscape
modes.

The PDAs have a small, low pixel count screen (240 wide by 320 high),
and we found they would not support enough forward navigation
real-estate in landscape mode. When we modeled it, the pilots that
flew these tests all prefered more forward than sideways "visibility"
and display range.

On EFBs, where we have 800x600 or more to play with, that is less of
an issue.

Still, almost all who fly with our products on an EFB, from single
engine props to Bizjets, report that Portrait is their poison of
choice. The reasons are the same as on a PDA, and the fact that in
most cockpits, portrait is easier to fit physically. We tested various
units in anything from a Citation II to G-Vs and getting the unit
positioned in landscape mode in a tight cockpit is next to impossible.

Addditonally, if you are using Jeppview or NOS approach plates on the
EFB, they really require a vertically oriented presentation to be
usable on anything less the 1024x768 screens, and those, for the most
part are too big to fit in most cockpits.

On the PDA in portrait mode, you can easily see detailed WX to ranges
of 500 and even 1000 miles. While we support 2500 mile zoom range, the
PDA screen is too small for anything less than continent-wide WX
systems.

Another point to think about is wiring complexity, and we have created
a unique, integrated wiring harness that feeds both the WXWorx
receiver and the PDAs from a single power input supporting 12 - 28VDC.

NAVAir Support - http://www.airgator.com

"Mark T. Mueller" wrote in message ...
Thanks for the review, Dan.

I am looking at NavAir using the WxWorx system on a Tosh PDA. Do you think
the screen will be too small? I have flown through enough weather this
summer to try it on a whim, anyway...

Thanks,

Mark