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Flighttech Intercom & Microair 760

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romott(at)adelphia.net
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Posted: Thu May 24, 2007 6:00 am Post subject: Flighttech Intercom & Microair 760

I have been helping a friend who owns a Zenith 601  with Flighttech ITC-402P and Microair 760 which would not function  properly.  The intercom would work fine, radio transmissions could be  received, but the transmit function was weak or non existent.

  

 After bunches of trouble shooting, rewiring,  returning both units to have them analyzed for problems (twice!!!), we finally  got them working.  Rick Lord at Erie Avionics http://www.erieaviation.com/ figured out what  the problem was.  He wired the radio and intercom together and noted that  the Flighttech was not pulling the PTT line down to ground as required by  the Microair.  Rick added a couple of diodes and fixed the problem.   

  

 If you are having similar problems, contact Rick  Lord at Erie Avionics or http://www.flighttech.com/contact_us.htm 

  

 THANKS to Rick Lord for his patience and finally  figuring this out!!!!!

  

 Ronnie Brown 

  

  

   [quote][b]

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klehman(at)albedo.net
Guest

Posted: Thu May 24, 2007 5:10 pm Post subject: Flighttech Intercom & Microair 760

Ron



I mentioned awhile ago that Flightech knows of this issue with their 

older intercoms due to a track error on the circuit board. The diode is 

there but wired incorrectly and they should be able to tell you how to 

install one jumper wire or repair it for you.  Their schematic is 

correct but the board has an error.  I believe I had to lift one end of 

the problem diode and jumper it to the correct place but it was quite 

some time ago that I did it.



Actually my board also had a second error that prevented the warning 

audio from my EIS from feeding through but they are also aware of that. 

I really like the intercom and flightech was easy to work with.



I think that every electronic unit that I purchased had an issue or two 

to work through regardless of the manufacturer.



Ken



Ron Brown wrote:



 	  Quote: 	
		   I have been helping a friend who owns a Zenith 601 with Flighttech 

 ITC-402P and Microair 760 which would not function properly.  The 

 intercom would work fine, radio transmissions could be received, but 

 the transmit function was weak or non existent.

  

 After bunches of trouble shooting, rewiring, returning both units to 

 have them analyzed for problems (twice!!!), we finally got them 

 working.  Rick Lord at Erie Avionics 

 http://www.erieaviation.com/ figured out what the problem was.  He 

 wired the radio and intercom together and noted that the Flighttech 

 was not pulling the PTT line down to ground as required by the 

 Microair.  Rick added a couple of diodes and fixed the problem. 

  

 If you are having similar problems, contact Rick Lord at Erie Avionics 

 or http://www.flighttech.com/contact_us.htm 

  

 THANKS to Rick Lord for his patience and finally figuring this out!!!!!

  

 Ronnie Brown

- The Matronics AeroElectric-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?AeroElectric-List

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