From: "Marvin Kaye" <marv@lancaironline.net>
Subject: Re: [LML] Re: Chelton or Grand Rapids
To: lml
Date: Tue, 16 Aug 2005 21:46:21 -0400
Message-ID: <web-671573@logan.com>
In-Reply-To: <20050816221440.FVNL8550.ibm56aec.bellsouth.net@Typhoon>
References: <20050816221440.FVNL8550.ibm56aec.bellsouth.net@Typhoon>
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Posted for "Alan K. Adamson" <aadamson@highrf.com>:

  I as well, recently went thru this contemplation... While throwing money at
  anything may improve it's overall set of features, it doesn't improve the
  level of integration.
  
  It really came down to three things for me.
  
  A) Resolution... The GRT is 400x240, the Chelton is 640x480.  Also color
  depth.  I don't know what specifically the two are, but there is no
  comparison between the images and processing speed.  The Chelton uses a
  Pentium at 650mhz, I have no idea what they GRT uses, but it doesn't have
  the mips to keep up with all that the chelton can do.
  
  B) Integration.  The GRT has only EFIS currently with some minimal
  navigation and waypoint information.  Weather is suppose to be out soon.
  Terrain and or 3D *may* be coming, but I think the MIPS issue is gonna cause
  it to be pretty minimal.  Also, the resolution is going to significantly
  hamper the GRT EFIS.  Even seen the weather on it... It's aint pretty
  
  C) lastly it came down to confidence.  I continue to read of GRT's that
  reboot themselves inflight or that go "dark" or blank, requiring a CB pull
  to reset..... NO WAY, not for me, if my butts gonna be hanging out in the
  breeze, I want an integrated system that is "hardened" and "proven".
  
  Your Milage may vary,
  My .02,
  Alan