Today's Message Index:
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1. 06:07 AM - Re: Re: Electrical Gremlins (Robert L. Nuckolls, III)
2. 06:08 AM - Re: Re: Weak and Static on Transmission (Robert L. Nuckolls, III)
3. 06:12 AM - Re: Re: Weak and Static on Transmission (Robert L. Nuckolls, III)
Message 1
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| Subject: | Re: Electrical Gremlins |
>I've got a few days to go before engine start so I can't address the
>on-line alternator scenario.
>Re 2 LVW's, I have two alternators. The stby alternator uses a
>Ford-type regulator, hence the 9005 LVM.
Understand. Check the calibration of your
bench test setup for the LV Warning trip
points. To have both an LR3 and ABMM module
to be off by the same direction and magnitude
is curious.
Both are set by design at 13.0 volts although
being .5 V higher wouldn't hurt their utility.
Bob . . .
Message 2
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| Subject: | Re: Weak and Static on Transmission |
At 11:30 AM 1/18/2012, you wrote:
>
>Just to make sure the obvious is not overlooked, are you sure that
>the location of the antenna is surrounded by fiberglass and not
>RF-opaque carbon fiber?
>IIRC, the Legacy uses a lot of CF in the airframe.
???? Hmmm . . . didn't know that about the Legacy
but I wondered when he made the reference to 'fiberglas'. I
thought it curious that Lancair would use the carbon
fiber in the IV and glass in the Legacy.
Yeah, if the antenna is inside a carbon structure
it's effectiveness is severely degraded.
Bob . . .
Message 3
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| Subject: | Re: Weak and Static on Transmission |
At 10:18 PM 1/18/2012, you wrote:
>
>I'm surprised no one has brought up the obvious
>of likely P-static. Does the aircraft have any static wicks?
He didn't mention flying in precip and static
wicks don't have anything to 'connect' to on
a glass airplane. If it's a carbon fiber then
wicks might be useful but my impression was that
his poor signal reports were at low altitudes
and probably slowed down for approach to landing
and in clear weather. P-static wouldn't hurt
a transmitted signal, only a received signal and
he didn't mention not being able to hear . . .
only be heard.
This is why the differentiation between weak-signal
static versus poor connection static is important.
The presence of carbon would support the notion of
it being the weak-signal variety.
Bob . . .
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