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icom ic-a200

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icubob(at)newnorth.net
Guest

Posted: Thu Dec 11, 2008 8:29 pm Post subject: icom ic-a200

hi all,

  this is to anyone that has recently wired or  looked at the installation manual for this radio. 

  i wired this radio over a year ago and  everything tested out fine. today i was reinstalling all of my wiring for the  last time and i noticed a wire was broken at the molex connector. actually it  looks more like i cut it. i cant remember if i did cut it or why. the connector  is pin R. pin R and pin 14 connect to the power feed from the bus. the schematic  calls for the power to go to these 2 pins. anyone know of a reason to feed pin14  and not pinR ?

  any input appreciated.

  bob noffs

    [quote][b]

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Sam

Joined: 18 May 2008
Posts: 135

Posted: Fri Dec 12, 2008 5:03 am Post subject: icom ic-a200

Bob,



I just finished my IC-A210 installation and I do have pins R&14 connected.  Except for getting my old GPSMap196 to talk to the A21, everything seems to be working.  I have been corresponding with ICOM Tech Support and there is has been no mention of removing the wire at R.

  	  Quote: 	
		  	
Sam

On Thu, Dec 11, 2008 at 10:27 PM, bob noffs <icubob(at)newnorth.net (icubob(at)newnorth.net)> wrote:

 [quote]       hi all,

  this is to anyone that has recently wired or  looked at the installation manual for this radio. 

  i wired this radio over a year ago and  everything tested out fine. today i was reinstalling all of my wiring for the  last time and i noticed a wire was broken at the molex connector. actually it  looks more like i cut it. i cant remember if i did cut it or why. the connector  is pin R. pin R and pin 14 connect to the power feed from the bus. the schematic  calls for the power to go to these 2 pins. anyone know of a reason to feed pin14  and not pinR ?

  any input appreciated.

  bob noffs

     	  Quote: 	
		  



	


[b]

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_________________
Sam Hoskins
www.samhoskins.blogspot.com

Sam

Joined: 18 May 2008
Posts: 135

Posted: Fri Dec 12, 2008 5:03 am Post subject: icom ic-a200

Bob,



I just finished my IC-A210 installation and I do have pins R&14 connected.  Except for getting my old GPSMap196 to talk to the A21, everything seems to be working.  I have been corresponding with ICOM Tech Support and there is has been no mention of removing the wire at R.

 

Sam



On Thu, Dec 11, 2008 at 10:27 PM, bob noffs <icubob(at)newnorth.net (icubob(at)newnorth.net)> wrote:

[quote]        hi all,

  this is to anyone that has recently wired or  looked at the installation manual for this radio. 

  i wired this radio over a year ago and  everything tested out fine. today i was reinstalling all of my wiring for the  last time and i noticed a wire was broken at the molex connector. actually it  looks more like i cut it. i cant remember if i did cut it or why. the connector  is pin R. pin R and pin 14 connect to the power feed from the bus. the schematic  calls for the power to go to these 2 pins. anyone know of a reason to feed pin14  and not pinR ?

  any input appreciated.

  bob noffs

     	  Quote: 	
		  



	


[b]

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_________________
Sam Hoskins
www.samhoskins.blogspot.com

klehman(at)albedo.net
Guest

Posted: Fri Dec 12, 2008 5:05 am Post subject: icom ic-a200

Bob



A few years ago I traced all those multiple power and also the ground, 

and signal ground connections on my A200 and found that they were all 

connected together inside the radio. Suspect they were encouraging 

redundant connections but there is no actual need for them.



On another thread, I almost always start and shut down with power on 

this radio and no problems so far after a couple of hundred hours. No 

radio master switch but OTOH one real overvoltage event was trapped by 

my overvoltage protection.



Ken



bob noffs wrote:

 	  Quote: 	
		   hi all,

  this is to anyone that has recently wired or looked at the installation 

 manual for this radio.

  i wired this radio over a year ago and everything tested out fine. 

 today i was reinstalling all of my wiring for the last time and i 

 noticed a wire was broken at the molex connector. actually it looks more 

 like i cut it. i cant remember if i did cut it or why. the connector is 

 pin R. pin R and pin 14 connect to the power feed from the bus. the 

 schematic calls for the power to go to these 2 pins. anyone know of a 

 reason to feed pin14 and not pinR ?

  any input appreciated.

  bob noffs

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gmcjetpilot

Joined: 04 Nov 2006
Posts: 170

Posted: Sat Dec 13, 2008 1:05 am Post subject: icom ic-a200

I recall from the factory manual and internal schematic I got a hold of, 

that the power and grounds are ganged internally, but its been a while. 

It do recall it's redundant, but it has been a few years.  

   

  Please no offense Ken just my 0.02 worth, the manual cautions against 

start and stop with power on. It's a long running debate....blaa blaa, but 

to each his own, every one has a choice and if it works fine, if you error 

on side of caution, good as well.

   

    The IC-200 does not have internal OV protection. So I do suggest folks 

use a **Transorb on the CB/fuse for the radio if you don't have a more 

elaborate OV protection system on the ICOM.

   

  ** Transorb or Mosorb are commercial names for Transient voltage suppressors, 

basically special zener diodes, small inexpensive OV devices that will break 

down at a specific voltage  (range) and trip the CB or fuse. I use a couple for 

the few avionics like the IC-200a that do not have internal OV protection or 

robustness. Many late model avionics (see your manual) have isolated 

internal power supplies with ability to handle spikes, and if the worst should 

occur the damage is limited to the power filter & don't use extra OV protection 



  for those components.

   

  George

   

  PS What OV was that Ken, what happened? 

   

   

   

   

  ********************************************

  From: Ken <klehman(at)albedo.net>

Subject: Re: icom  ic-a200



Bob



A few years ago I traced all those multiple power and also the ground, 

and signal ground connections on my A200 and found that they were all 

connected together inside the radio. Suspect they were encouraging 

redundant connections but there is no actual need for them.



On another thread, I almost always start and shut down with power on 

this radio and no problems so far after a couple of hundred hours. No 

radio master switch but OTOH one real over-voltage event was trapped by 

my over-voltage protection.



Ken

  

********************************************



           [quote][b]

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icubob(at)newnorth.net
Guest

Posted: Sat Dec 13, 2008 6:35 am Post subject: icom ic-a200

someone pointed out to me that a panel switch for the radio and intercom allows you to turn them on and the volume and squelch are then preset. good idea just for that reason. bob noffs

---

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nuckolls.bob(at)aeroelect
Guest

Posted: Sat Dec 13, 2008 12:58 pm Post subject: icom ic-a200

At 03:04 AM 12/13/2008, you wrote:



   <snip>



 	  Quote: 	
		  

The IC-200 does not have internal OV protection. So I do suggest folks

use a **Transorb on the CB/fuse for the radio if you don't have a more

elaborate OV protection system on the ICOM.


	


   Would you care to recommend a part number? The catalogs

   are full of all manner of Transorbs. What voltage and energy

   rating device do you recommend?



 	  Quote: 	
		  

** Transorb or Mosorb are commercial names for Transient voltage suppressors,

basically special zener diodes, small inexpensive OV devices that will break

down at a specific voltage (range) and trip the CB or fuse. I use a 

couple for

the few avionics like the IC-200a that do not have internal OV protection or

robustness. Many late model avionics (see your manual) have isolated

internal power supplies with ability to handle spikes, and if the 

worst should

occur the damage is limited to the power filter & don't use extra OV 

protection

for those components.


	


   Which devices might these be? I'm not plugged into

   all that circulates into the aircraft accessories

   equipment market. If there are specific devices vulnerable

   to "spikes" it would be well that we know which products

   they are . . . and what levels of abuse is dangerous

   for them. If you have specifics to share, it would

   be helpful.

        Bob . . .



        ----------------------------------------)

        ( . . .  a long habit of not thinking   )

        ( a thing wrong, gives it a superficial )

        ( appearance of being right . . .       )

        (                                       )

        (                  -Thomas Paine 1776-  )

        ----------------------------------------

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