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Warning alarms into Flightcom403

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aaaron(at)tvp.com.au
Guest

Posted: Thu Sep 14, 2006 1:35 pm Post subject: Warning alarms into Flightcom403

I would like to pipe the warning tones from my EIS4000, my transponder

and my GPS into my intercom (FC403D).  I have an IPOD jack set up to go

through the auxiliary audio input and thought I would simply use one of

the unused mic inputs for the warning tones. I realize that this may not

be ideal if the pilot isolate switch is on ... I can live with that. The

mic has two wires into the intercom but the warning outputs just have

single wires out of the devices.  How would I go about wiring up the

mike jack in this configuration?  Thanks for the advice.

Allan

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nuckollsr(at)cox.net
Guest

Posted: Thu Sep 14, 2006 6:06 pm Post subject: Warning alarms into Flightcom403

At 07:34 AM 9/15/2006 +1000, you wrote:



 	  Quote: 	
		  



I would like to pipe the warning tones from my EIS4000, my transponder

and my GPS into my intercom (FC403D).  I have an IPOD jack set up to go

through the auxiliary audio input and thought I would simply use one of

the unused mic inputs for the warning tones. I realize that this may not

be ideal if the pilot isolate switch is on ... I can live with that. The

mic has two wires into the intercom but the warning outputs just have

single wires out of the devices.  How would I go about wiring up the

mike jack in this configuration?  Thanks for the advice.


	


   Using the microphone jack for anything other than aircraft

   style mic input is a bit iffy. Suggest you consider some form

   of audio isolation amplifier (mixing amp) to combine one

   of the intercom headset outputs like shown on page 1.10 of



   http://www.aeroelectric.com/Catalog/AEC/9009/9009-700J.pdf



   This data package describes the parts and wiring for crafting

   an amplifier from scratch . . . you can buy a bare board if you

   wish at:



http://aeroelectric.com/Catalog/AECcatalog.html



   artwork for the board is at:



http://www.aeroelectric.com/Catalog/AEC/9009/9009-301-1.pcb



   should you choose to order your own boards from



http://expresspcb.com



   This will 'cleaner' and offer very predictable results.



   Bob . . .

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