Today's Message Index:
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1. 06:20 AM - Re: Re: Lightspeed Plasma III current curves (Robert L. Nuckolls, III)
2. 06:49 AM - Re: Alternator Whine in Radio Transmit (Robert L. Nuckolls, III)
3. 08:14 AM - Re: Alternator Whine in Radio Transmit (user9253)
4. 01:27 PM - Re: Alternator Whine in Radio Transmit (Ron Lendon)
Message 1
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| Subject: | Re: Lightspeed Plasma III current curves |
At 11:34 AM 9/6/2013, you wrote:
>
>As Jay uses the singular "Box Version B". I assume the current draw
>would be double for dual LSE III's . Correct?
>
>John
Yes . . . that is PER system . . .
Bob . . .
Message 2
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| Subject: | Re: Alternator Whine in Radio Transmit |
At 06:11 PM 9/8/2013, you wrote:
>
>Bob,
>
>I have the WW Corvair engine in a 601XLB and have 180 hours on
>it. I used your design with the JD alternator and replaced the
>voltage regulator/rectifier with the B&C unit "PMR1C-14". At about
>170 hours the filter cap 10,000uF gave up and the ATC folks started
>to complain.
>
>I have replaced the Cap and now that I know about the whine I find I
>can switch off the alternator during transmit and it is as clear as
>a bell. With the alternator switched on it does have a whine that
>is tolerable, but it still has a whine.
>
>What steps can I take to eliminate the whine from the alternator and
>leave it switched on?
>
>Be gentle, I'm a metal worker not an electrician.
It's it only on transmit? Do you hear it in the headsets
for receiving other stations? Suggest you check the microphone
and headset jacks for being grounded to the panel . . . these
should be insulated from the panel and grounded through wires
back to the intercom.
You can get insulating washers from B&C
http://www.aeroelectric.com/Pictures/Connectors/Audio/Jack_Insu
Bob . . .
Message 3
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| Subject: | Re: Alternator Whine in Radio Transmit |
Link to B & C insulating washers for headset and mic jacks.
http://www.bandc.biz/insulatingwasherset1pair.aspx
--------
Joe Gores
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=408271#408271
Message 4
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| Subject: | Re: Alternator Whine in Radio Transmit |
The head sets jacks are insulated and grounded back to the single point ground
with everything else. Do I need to move that ground wire directly to the intercom
unit?
--------
Ron Lendon
WW Corvair with Roy's Garage 5th bearing
CH 601 XLB
N601LT - Flying
http://www.mykitlog.com/rlendon
Corvair Engine Prints:
http://www.zenith.aero/profile/RonLendon
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=408300#408300
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