Today's Message Index:
----------------------
1. 12:11 AM - Re: King KT78 Manual (Jay Hyde)
2. 12:11 AM - Re: King KT78 Manual (Jay Hyde)
3. 04:23 AM - Re: Trusting a chargers reputation, what an idiot! (Robert L. Nuckolls, III)
4. 04:46 AM - Re: Trusting a chargers reputation, what an idiot! (Jay Hyde)
5. 07:03 AM - Re: King KT78 Manual (user9253)
6. 07:03 AM - Re: King KT78 Manual (user9253)
7. 07:30 AM - Re: Transponder Interference with Icom A-22 Comm Radio (user9253)
8. 07:02 PM - Re: Transponder Interference with Icom A-22 Comm Radio (Robert L. Nuckolls, III)
9. 07:22 PM - Re: Alternator without a Battery (Thomas E Blejwas)
Message 1
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Subject: | King KT78 Manual |
Thanks Bob- I received a copy from Stein; so helpful, thanks Stein!
-----Original Message-----
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Robert L.
Nuckolls, III
Sent: 30 October 2013 01:56 AM
Subject: Re: AeroElectric-List: King KT78 Manual
--> <nuckolls.bob@aeroelectric.com>
At 10:55 AM 10/29/2013, you wrote:
>Does anyone have a copy of the King KT78 manual and or pinouts?
Check here http://tinyurl.com/kcwmt6f
Bob . . .
Message 2
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Subject: | King KT78 Manual |
Thanks- I was already sent a copy. As we have all mentioned, "ain't this
list great!"
J
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Jerald
Folkerts
Sent: 30 October 2013 01:11 AM
Subject: RE: AeroElectric-List: King KT78 Manual
Jay,
I have one for KT78A. If you want, send me your email address.
Best,
Jerry Folkerts
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Jay Hyde
Sent: Tuesday, October 29, 2013 10:55 AM
Subject: AeroElectric-List: King KT78 Manual
Does anyone have a copy of the King KT78 manual and or pinouts?
I tried a google search and came across a link to one at www.gobookee.org
but they want a 'credit card verification' to download a 'free' document and
I'm suspicious. J
Alternatively, does anyone have any experience with gobookee?
Johannesburg Jay
http://www.matronics.com/Navigator?AeroElectric-List
http://forums.matronics.com
http://www.matronics.com/contribution
Message 3
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Subject: | Re: Trusting a chargers reputation, what an idiot! |
At 01:38 AM 10/30/2013, you wrote:
>Ron I am busy with a new build and have a similar problem...the
>battery voltage at the battery is 13.4 and the MGL Efis shows supply
>voltage as 12.9. I have checked all feeds and connectors, but cannot
>isolate the voltage drop....
Are you sure the two instruments agree with each
other? Measure some other common point of interest
between the EFIS and your meter . . . see if they
EVER agree.
Bob . . .
Message 4
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Subject: | Trusting a chargers reputation, what an idiot! |
Hey there Bob-V, I agree with Bob-N :-)
Even though I think that the MGL instrument is pretty good there may be a
calibration issue; I would check both points with an independent meter and
see what you get.
Jay
-----Original Message-----
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Robert L.
Nuckolls, III
Sent: 30 October 2013 01:23 PM
Subject: Re: AeroElectric-List: Trusting a chargers reputation, what an
idiot!
--> <nuckolls.bob@aeroelectric.com>
At 01:38 AM 10/30/2013, you wrote:
>Ron I am busy with a new build and have a similar problem...the battery
>voltage at the battery is 13.4 and the MGL Efis shows supply voltage as
>12.9. I have checked all feeds and connectors, but cannot isolate the
>voltage drop....
Are you sure the two instruments agree with each
other? Measure some other common point of interest
between the EFIS and your meter . . . see if they
EVER agree.
Bob . . .
Message 5
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Subject: | Re: King KT78 Manual |
> but they want a 'credit card verification' to download a 'free' document
Do a search of "gobookee scam".
After reading about the experiences of others, you will never give them your credit
card number.
Joe
--------
Joe Gores
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=411750#411750
Message 6
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Subject: | Re: King KT78 Manual |
> but they want a 'credit card verification' to download a 'free' document
Do a search of "gobookee scam".
After reading about the experiences of others, you will never give them your credit
card number.
Joe
--------
Joe Gores
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=411751#411751
Message 7
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Subject: | Re: Transponder Interference with Icom A-22 Comm Radio |
Maybe something like this ebay item # 131025623616 will help.
I learned that sellers in China sometimes exaggerate the capabilities of their
products. So divide the rated output of the DC to DC Converter by 2. Also note
that most of these devices have a non-isolated output. I interpret that to
mean that the negative input and negative output are connected together, if that
is of any concern to you. I think that converters without a heat-sink can
only handle up to one amp.
Joe
--------
Joe Gores
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=411752#411752
Message 8
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Subject: | Re: Transponder Interference with Icom A-22 Comm |
Radio
At 11:28 AM 10/29/2013, you wrote:
I just installed a Sandia Transponder with an Icom A-22 handheld
radio hard wired into the electrical system. On the first flight,
ATC had a difficult time understanding me and I heard "clicks" in
then headset while receiving. Not knowing if it was RF interference
from the transponder OR feedback from the aircraft 12 volt power
system, I removed the hard wire power from the radio and used the
battery pack... Everything worked great.
Radios of this variety are never qualified to DO160
recommendations for immunity to noise common to
the vehicular dc bus. The exact nature of
ATC's complaint would be good. The 'clicking'
you describe is not particularly interesting.
Further, the noise heard on your transmitted
signal may be very different than anything
you hear on receive.
Is this test with engine running or not? Does
it go away with the alternator off? Could you
record a sample of the noise received by
your listeners. Got access to a pocket recorder
and second transceiver to run an experiment.
Have somebody talk to you on the compromised
radio so you can offer an interpretation of
what you hear.
I even placed the VHF receiver within a inch of the transponder
antenna while it was being interrogated and it still worked fine.
Since the complaint was against your transmitted
signal, the experiment may not have any
significance.
Seems I am having some strange pulses running through the 12V system
while the transponder is ON because it is eliminated when I remove
acft power from it and use the battery pack.
Check your transmitted signal with the
radio hookd to the airplane with the
transponder on/off, alternator on/of
and any other electro-whizzies.
QUESTION - Is there something I can do or install that will isolate
electrically the Comm Radio from getting this feedback
from the transponder OR is thernee something I can add to the
Transponder Power feed?
Not enough data for a specific suggestion.
A simple noise filter may do the job but
it would help to know exactly where the
noise is coming from.
Bob . . .
Message 9
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Subject: | Re: Alternator without a Battery |
Bob,
It has taken days for me to respond because I couldn't get the website to respond
to my enquiries and, consequently, I was unable to open your new drawing.
Today I could! Thanks for your response.
You state that you wouldn't shut down a battery unless there is smoke in the cockpit
and, in which case you would shut down the alternator as well. If a battery
is shorting and drawing more and more current from the alternator, why wouldn't
you disconnect it or do you consider this too unlikely to design against?
You ask why two batteries? I'm reconsidering. If the battery can be disconnected
and the engine continues to run on only the alternator, then one battery probably
meets my design goals. Thanks for the question.
As you suggested, I've looked at your new drawing, but I don't think it meets all
my design goals. A shorted battery can't be disconnected. I'll continue to
study it w.r.t my other design goals. Thanks.
Tom
Sent from my iPad
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