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KT 74 GPS Input

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George View Drop Down
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    Posted: 28 Apr 2015 at 7:54pm
Does anyone know what pin the GPS pos comes in on the KT 74
transponder. I know it is not the same as the Trig TT31? The encoder
serial input is on that pin. Any help appreciated.
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888dom View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 888dom Quote  Post ReplyReply Direct Link To This Post Posted: 28 Apr 2015 at 9:00pm
Pin 7 on the primary (big) plug.
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George View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote George Quote  Post ReplyReply Direct Link To This Post Posted: 28 Apr 2015 at 10:20pm
Thanks for the confirmation. Encoder is pin 3 on the secondary.
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George View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote George Quote  Post ReplyReply Direct Link To This Post Posted: 28 Apr 2015 at 10:22pm
That is for serial encoder.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote flybikeski Quote  Post ReplyReply Direct Link To This Post Posted: 28 Apr 2015 at 11:49pm

Originally posted by George George wrote:

Thanks for the confirmation. Encoder is pin 3 on the secondary.


It would be helpful to know if the KT74 actually works with the 540 in regards to ADS-B Out, but unfortunately it is not approved.  Its not Avidyne's fault, but the FAA requires each pair of transponders and position sources to be approved.  King has not approved theirs for the 540.  I have an email from King that says it isn't approved and they are not going to work on approval until they see how well the 540 does in the market.  That was about a month ago.

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Post Options Post Options   Thanks (0) Thanks(0)   Quote oskrypuch Quote  Post ReplyReply Direct Link To This Post Posted: 29 Apr 2015 at 8:43am
Originally posted by flybikeski flybikeski wrote:

[QUOTE=George]....  I have an email from King that says it isn't approved and they are not going to work on approval until they see how well the 540 does in the market.  That was about a month ago.


They may be waiting to see how well the 770 does in the market, as well. ;-)

It was really folly of the FAA to create an STC construct for this, it really hampers choices in installations.

* Orest

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chflyer View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote chflyer Quote  Post ReplyReply Direct Link To This Post Posted: 29 Apr 2015 at 9:21am
It's called job security.

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