Today's Message Index:
----------------------
1. 10:05 AM - Magneto Noise (Jeff Luckey)
2. 12:14 PM - Re: Magneto Noise (Tim Andres)
3. 01:01 PM - Re: Magneto Noise (David Lloyd)
Message 1
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=0A=0AI flew w/ a friend recently and when trying to get awos for our desti
nation airport (which is a pretty weak signal) it was almost impossible to
hear due to magneto noise.- The radio is a Garmin 430W in a Cherokee and
we were around 10 miles from the airport.- When we got within 3 or 4 mile
s the signal was much clearer.- All other transmissions with ATC & towers
were acceptable but I noticed at high volume I could clearly hear magneto
noise in the background.=0A=0A=0AI'm wondering if that's just the way it is
or if there is a problem with the magnetos or P lead wiring.=0A=0A=0AThere
must be one of Bob's handy-dandy write-ups on this topic but a quick searc
h of AeroElectric.com was in vain.=0A=0ACan someone point me in the right d
irection?=0A=0ATIA,=0A=0A-Jeff=0A
Message 2
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Subject: | Re: Magneto Noise |
Not normal. Does it go away when you switch either mag off? YOu sure its a
mag?=0ATim=0A=0A=0A=0A=0A________________________________=0A From: Jeff Luc
key <jluckey@pacbell.net>=0ATo: "aeroelectric-list@matronics.com" <aeroelec
tric-list@matronics.com> =0ASent: Sunday, April 6, 2014 10:04 AM=0ASubject:
AeroElectric-List: Magneto Noise=0A =0A=0A=0A=0A=0AI flew w/ a friend rece
ntly and when trying to get awos for our destination airport (which is a pr
etty weak signal) it was almost impossible to hear due to magneto noise.-
The radio is a Garmin 430W in a Cherokee and we were around 10 miles from
the airport.- When we got within 3 or 4 miles the signal was much clearer
.- All other transmissions with ATC & towers were acceptable but I notice
d at high volume I could clearly hear magneto noise in the background.=0A
=0A=0AI'm wondering if that's just the way it is or if there is a problem w
ith the magnetos or P lead wiring.=0A=0A=0AThere must be one of Bob's handy
-dandy write-ups on this topic but a quick search of AeroElectric.com was i
n vain.=0A=0ACan someone point me in the right direction?=0A=0ATIA,=0A=0A-J
====================
Message 3
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Subject: | Re: Magneto Noise |
I would suspect the "shield" part of the P-lead cable has broken and is
no longer grounded at the mag. housing. 2nd, a small chance that the
heavy grounding cable from the engine to aircraft frame is missing or
not making a full connection due to corrosion or other flaw.
Dave
-------------------------------------------------------------------------
-------
----- Original Message -----
From: Tim Andres
To: aeroelectric-list@matronics.com
Sent: Sunday, April 06, 2014 12:13 PM
Subject: Re: AeroElectric-List: Magneto Noise
Not normal. Does it go away when you switch either mag off? YOu sure
its a mag?
Tim
-------------------------------------------------------------------------
-----
From: Jeff Luckey <jluckey@pacbell.net>
To: "aeroelectric-list@matronics.com"
<aeroelectric-list@matronics.com>
Sent: Sunday, April 6, 2014 10:04 AM
Subject: AeroElectric-List: Magneto Noise
I flew w/ a friend recently and when trying to get awos for our
destination airport (which is a pretty weak signal) it was almost
impossible to hear due to magneto noise. The radio is a Garmin 430W in
a Cherokee and we were around 10 miles from the airport. When we got
within 3 or 4 miles the signal was much clearer. All other
transmissions with ATC & towers were acceptable but I noticed at high
volume I could clearly hear magneto noise in the background.
I'm wondering if that's just the way it is or if there is a problem
with the magnetos or P lead wiring.
There must be one of Bob's handy-dandy write-ups on this topic but a
quick search of AeroElectric.com was in vain.
Can someone point me in the right direction?
TIA,
-Jeff
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