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                           Avionics-List Digest Archive
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                     Total Messages Posted Tue 01/25/05: 2
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Today's Message Index:
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     1. 05:42 PM - Garmin GNC300 problem  (Charlie England)
     2. 09:59 PM - Re: Garmin GNC300 problem  (David Lloyd)
 
 
 
________________________________  Message 1  _____________________________________


Time: 05:42:54 PM PST US
From: Charlie England <ceengland@bellsouth.net>
   "avionics-list@matronics.com" <avionics-list@matronics.com>
Subject: Avionics-List: Garmin GNC300 problem

--> Avionics-List message posted by: Charlie England <ceengland@bellsouth.net>

Posted for a friend:

New install of Garmin GNC300. All functions seem to work normally unless 
the transmit button is held for 10-15 seconds. The display will then go 
dim to dark & the unit hums & groans. This continues after the transmit 
button is released. If power is cycled, the unit will immediately return 
to normal operation.  The owner has removed the GPS antenna & has seen 
no change in the symptoms.

Any thoughts??

Thanks,

Charlie






________________________________  Message 2  _____________________________________


Time: 09:59:05 PM PST US
From: "David Lloyd" <skywagon@charter.net>
   "aeroelectric list" <aeroelectric-list@matronics.com>
Subject: Re: Avionics-List: Garmin GNC300 problem

--> Avionics-List message posted by: "David Lloyd" <skywagon@charter.net>

Charlie,
The transmit mode draws the most current of any mode of operation.  It 
sounds like the unit is being strangled for power during this time.  Could 
be: too small a gauge of wire used for hook-up, a bad ground, a bad circuit 
breaker limiting current but not popping, a bad power supply in the new 300. 
Take it back to the installer for testing.  Let us know what the problem is.
David


----- Original Message ----- 
From: "Charlie England" <ceengland@bellsouth.net>
<avionics-list@matronics.com>
Subject: Avionics-List: Garmin GNC300 problem


> --> Avionics-List message posted by: Charlie England 
> <ceengland@bellsouth.net>
>
> Posted for a friend:
>
> New install of Garmin GNC300. All functions seem to work normally unless
> the transmit button is held for 10-15 seconds. The display will then go
> dim to dark & the unit hums & groans. This continues after the transmit
> button is released. If power is cycled, the unit will immediately return
> to normal operation.  The owner has removed the GPS antenna & has seen
> no change in the symptoms.
>
> Any thoughts??
>
> Thanks,
>
> Charlie
>
>
>