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  #1  
Old 06-11-2013, 02:51 PM
Abbygirl1 Abbygirl1 is offline
 
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Default King KLN 94B compatability

Has anyone used a KLN 94 GPS interfaced to a Dynon D-10A? If so, any special considerations?
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  #2  
Old 06-11-2013, 02:53 PM
BillC BillC is offline
 
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Check the Dynon website. They should have that information there.
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  #3  
Old 06-11-2013, 07:26 PM
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ChiefPilot ChiefPilot is offline
 
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Quote:
Originally Posted by Abbygirl1 View Post
Has anyone used a KLN 94 GPS interfaced to a Dynon D-10A? If so, any special considerations?
Works great. You need to set the appropriate format configuration on the Dynon, of course, but otherwise it works well.
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  #4  
Old 06-11-2013, 09:19 PM
jetdriven jetdriven is offline
 
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There is some limitation with the KLN-89/94 about not having the proper resolution to drive a GPSS.
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  #5  
Old 06-11-2013, 10:50 PM
Abbygirl1 Abbygirl1 is offline
 
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Default KLN 94

Thanks guys.....I called Dynon, they aren't sure about the 94. Website says the 90 Arinc confirmed....serial MAY work. Glad to hear a positive response on the 94.
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  #6  
Old 06-12-2013, 05:45 AM
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rocketbob rocketbob is offline
 
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The KLN-94 does not have an arinc 429 output. It has an analog output which most autopilots don't work with, to be able to do roll steering necessary for IFR. I have a side project I will eventually get to to use a microcontroller to convert the analog signal to the SL-30 serial format, which is equivalent to arinc 429 without the hardware complexity. It does have the standard Nema 0183 serial output, so it will drive an autopilot but not do turn anticipation.

Really nice and simple IFR gps, but you'll want an external moving map such as a portable.
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Last edited by rocketbob : 06-12-2013 at 05:49 AM.
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  #7  
Old 06-12-2013, 06:22 AM
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ChiefPilot ChiefPilot is offline
 
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Quote:
Originally Posted by rocketbob View Post
It does have the standard Nema 0183 serial output, so it will drive an autopilot but not do turn anticipation.
The odd thing is that it *will* do turn anticipation over RS-232, as did the KLN-89B. It was one of the happiest moments of my life when my KLN told the Dynon AP to start a turn for the next leg early. :-)
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  #8  
Old 06-12-2013, 06:25 AM
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Really! That's not spelled out anywhere in the manual and I talked to a friend who works at Honeywell about it. I suppose even if its not true bank-angle information, incremental changes in heading in output sentences might be good enough.
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Bob Japundza CFI A&PIA
N9187P PA-24-260B Comanche, flying
N678X F1 Rocket, under const.
N244BJ RV-6 "victim of SNF tornado" 1200+ hrs, rebuilding
N8155F C150 flying
N7925P PA-24-250 Comanche, restoring
Not a thing I own is stock.

Last edited by rocketbob : 06-12-2013 at 06:27 AM.
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  #9  
Old 06-12-2013, 08:33 AM
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ChiefPilot ChiefPilot is offline
 
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Quote:
Originally Posted by rocketbob View Post
Really! That's not spelled out anywhere in the manual and I talked to a friend who works at Honeywell about it. I suppose even if its not true bank-angle information, incremental changes in heading in output sentences might be good enough.
I think that is exactly what is going on; my suspicion is the info that gets spit out over the serial port is derived from the same info that the on-screen CDI uses which, as you know, supports turn anticipation.

It's not perfect, and not as good as a true GPSS solution, but it does turns of up to 45 degrees or so without overshoot, and even the 90 degree turn on the 'T' of a GPS approach is handled without a lot of overshoot.

Overall, I'm pretty happy with the unit; while it certainly isn't in the same class as a GTN650 etc. I think the King units provide an excellent amount of functionality for the price, and really aren't any harder to user than a Garmin 430.
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  #10  
Old 06-12-2013, 08:53 AM
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rocketbob rocketbob is offline
 
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well shoot. Had I known this I wouldn't had to get the $200 GPSS steering option on my Pro Pilot....
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N9187P PA-24-260B Comanche, flying
N678X F1 Rocket, under const.
N244BJ RV-6 "victim of SNF tornado" 1200+ hrs, rebuilding
N8155F C150 flying
N7925P PA-24-250 Comanche, restoring
Not a thing I own is stock.
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