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1. 05:23 AM - Re: KR 85 ADF (Fred Fillinger)
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--> Avionics-List message posted by: "Fred Fillinger" <n3eu@comcast.net>
> I am trying to fix a KR85 ADF with the KI225 indicator.
> I am looking for any info or documentation.
>
> The receiver works and tries to lock on to the signal but
> the needle seems to meve inconsistently.
>
> Thanks Simon
www.esscoaircraft.com sells the maintenance manual for $65. However,
if the unit is basically functioning, these ADF manuals will not let
you begin to solve this problem w/o an ADF signal generator and
dual-trace oscilloscope.
Check for cleanliness/integrity of antenna and all other connections.
And listen to the audio with the ADF set to "ANT" with
engine/avionics/strobes running to detect interference from any of
those systems. That's where a good shop would start before hauling
the box to the bench.
Fred F.
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