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WIRING HANDHELD TO PMA800B

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brinker(at)cox-internet.c
Guest

Posted: Mon Jun 12, 2006 11:38 am Post subject: WIRING HANDHELD TO PMA800B

          This has probably  been answered before, so excuse me if so. Just thought it may save me from  digging thru miles of archives.

           I was under the  impression it to be no problem to put an Icom handheld on com 2 of a PMA8000B  audio panel. But I was informed by my avionics wiring tech that it was unheard  of to do so. Why is that ? Is there a way ?

  

 Thanks Randy

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glastar(at)gmx.net
Guest

Posted: Mon Jun 12, 2006 1:11 pm Post subject: WIRING HANDHELD TO PMA800B

My Icom A-20 is wired to my Garmin 320 trough a little box for emulating 

the MIC key.



So yes it can be done!



Werner



Brinker wrote:



 	  Quote: 	
		             This has probably been answered before, so excuse me if so. 

 Just thought it may save me from digging thru miles of archives.

           I was under the impression it to be no problem to put an 

 Icom handheld on com 2 of a PMA8000B audio panel. But I was informed 

 by my avionics wiring tech that it was unheard of to do so. Why is 

 that ? Is there a way ?

  

 Thanks Randy

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brinker(at)cox-internet.c
Guest

Posted: Mon Jun 12, 2006 1:28 pm Post subject: WIRING HANDHELD TO PMA800B

Thanks Werner, any idea what kind of box or where it came from ?



Thanks Randy



---

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glastar(at)gmx.net
Guest

Posted: Mon Jun 12, 2006 9:32 pm Post subject: WIRING HANDHELD TO PMA800B

Hello Randy,



just checked my mail history, I bought it from flighttech 

(www.flighttech.com) Joe Fisher made it for me for a reasonable price, 

he's a very nice guy and it is a small box, I might have some pictures 

which I can send to you if you're interested. Be aware, not each Icom 

needs this box, just the older model once. But I was quite happy last 

week when my main com had some overheating problems and my Icom kept me 

on air!



Werner



Brinker wrote:



[quote] 

 <brinker(at)cox-internet.com>



          Thanks Werner, any idea what kind of box or where it came from ?



 Thanks Randy



 ---

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N601RT

Joined: 25 Feb 2006
Posts: 31
Location: Hillsboro, Oregon

Posted: Tue Jun 13, 2006 9:45 am Post subject: Re: WIRING HANDHELD TO PMA800B

Randy,



The avionics shop that built my panel did not want to wire my iCom A23 to the Garmin audio panel. I've since moved my panel mounted nav/com to com2 and wired the A23 to com1. The A23 has a seperate antenna and works fine. 



Why com1? If I have complete electrical failure (or if for some reasons I lose power to the audio panel) com1 will default connect to the pilot headset with the PTT working.



Additional, possibly useful information:

The connector for the A23 (and A5) is a 30-701 which I got from http://www.svideodotcom.com/. $2.55 each in 2003. Pictures of this at http://www.calrad.com/calrad/cat-59page2.html near the bottom of the page.



Using an ohm meter with the headset adapter cable I found:



- The tip end of the connector goes to the headset speaker



- The contact closest to the tip goes to the "Ring", mike audio. See http://www.aeroelectric.com/articles/micjack/mj3.jpg from http://www.aeroelectric.com/articles/micjack/micjack.html.



- The contact two away from the tip goes to the "Tip" PTT. Again see http://www.aeroelectric.com/articles/micjack/mj3.jpg from http://www.aeroelectric.com/articles/micjack/micjack.html.



- The contact closest to the black housing and wires (farthest from the end) is ground (or common, or audio low)

Regards,



Roy



N601RT: CH601HDS, nose gear, Rotax 912ULS, Arplast PV-50, All electric, IFR equipped, 535hrs, 640 landings

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frank.hinde(at)hp.com
Guest

Posted: Tue Jun 13, 2006 10:50 am Post subject: WIRING HANDHELD TO PMA800B

Great minds think alike Roy...On the RV7 I had my Icom A200 wired as

com1 because the standby alternator will not run the GNS430, fuel pump

and transponder (EFIS is battery backed up).



That way I can also switch off the audio panel to save power and hand

fly through the soup and bang everything back on for the approach.



Cheers



Frank



601 HDS soon to be sold this time I think



Do not archive 



Randy,



The avionics shop that built my panel did not want to wire my iCom A23

to the Garmin audio panel. I've since moved my panel mounted nav/com to

com2 and wired the A23 to com1. The A23 has a seperate antenna and works

fine. 



Why com1? If I have complete electrical failure (or if for some reasons

I lose power to the audio panel) com1 will default connect to the pilot

headset with the PTT working.



Additional, possibly useful information:

The connector for the A23 (and A5) is a 30-701 which I got from

http://www.svideodotcom.com/. $2.55 each in 2003. Pictures of this at

http://www.calrad.com/calrad/cat-59page2.html near the bottom of the

page.



Using an ohm meter with the headset adapter cable I found:



- The tip end of the connector goes to the headset speaker



- The contact closest to the tip goes to the "Ring", mike audio. See

http://www.aeroelectric.com/articles/micjack/mj3.jpg from

http://www.aeroelectric.com/articles/micjack/micjack.html.



- The contact two away from the tip goes to the "Tip" PTT. Again see

http://www.aeroelectric.com/articles/micjack/mj3.jpg from

http://www.aeroelectric.com/articles/micjack/micjack.html.



- The contact closest to the black housing and wires (farthest from the

end) is ground (or common, or audio low)

Regards,



Roy



N601RT: CH601HDS, nose gear, Rotax 912ULS, Arplast PV-50, All electric,

IFR equipped, 535hrs, 640 landings





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