Today's Message Index:
----------------------
1. 06:11 AM - Re: Re: Essential Incident - Almost (Long) (Ed Anderson)
2. 06:15 AM - Re: E-bus design goals (nuckollsr)
3. 10:27 AM - Re: Re: Stereo to Mono (Roger Cole)
4. 11:59 AM - xponder ant mounting (woxofswa)
5. 01:05 PM - Re: Re: Stereo to Mono (John Morgensen)
6. 04:05 PM - Wiring is done but SL-30 comm won't transmit (Jim Thorne)
7. 04:26 PM - Cessna 150F Landing/Taxi light switch. (Stuart Driver)
8. 04:41 PM - Re: Wiring is done but SL-30 comm won't transmit (Floyd)
9. 05:15 PM - Re: Wiring is done but SL-30 comm won't transmit (Ralph E. Capen)
10. 08:52 PM - Re: Re: Stereo to Mono (Matt Prather)
Message 1
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| Subject: | Re: Essential Incident - Almost (Long) |
Hi Lenny,
I have an auto alternator with internal regulator. The alternator ONLY
needs battery voltage to get started - once its producing voltage it uses
its own voltage to keep its field coils energized and magnetized. In fact,
I can pull the alternator field coil circuit breaker once the engine is
running and it has no effect on the alternator. Yes, you do need the
battery to jump start /bootstrap the alternator to producing voltage.
Now with the typical aircraft alternator, it's a bit different story. They
normally have an external regulator which permits you to remove voltage from
the alternator field coil and in this case, if you pull the CB and remove
voltage from the field coil it will stop producing voltage. But, once again
you only need the battery to get it started.
At least that is my understanding of the major difference between auto and
aircraft alternators.
Ed
Ed Anderson
Rv-6A N494BW Rotary Powered
Matthews, NC
eanderson@carolina.rr.com
http://www.andersonee.com
http://www.dmack.net/mazda/index.html
http://www.flyrotary.com/
http://members.cox.net/rogersda/rotary/configs.htm#N494BW
http://www.rotaryaviation.com/Rotorhead%20Truth.htm
-----Original Message-----
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Lenny
Iszak
Sent: Friday, June 05, 2009 10:45 PM
Subject: AeroElectric-List: Re: Essential Incident - Almost (Long)
<lenard@rapiddecision.com>
Ed,
Wouldn't isolating the battery from the alternator stop the alternator from
generating power? Or do you have a permanent magnet alternator?
Or was the alternator originally switched to the auxiliary, now non-existent
battery to keep feeding your e-bus?
Lenny
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=247043#247043
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Message 2
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| Subject: | Re: E-bus design goals |
There are no risks to electro-whizzies for operating the airplane with the e-bus
alternate feed switch ON. However, you need to pre flight test the two power
paths for operation. The original operating protocols suggested closing the e-bus
alternate feed switch to power up the comm radio to get the ATIS and/or clearance
delivery. This presumes, of course that your departure field has such
services. If not, then closing this switch momentarily before doing anything
else proves availability of this power path. The e-bus alternate feed switch
would be off after closing the battery contactor and during engine start.
After engine start, the e-bus should be verified energized via the normal feed
path diode thus proving that power path. Re-closing the e-bus alternate feed switch
later for the purpose of "getting the e-bus voltage up" offers no risk to
the system or equipment. Be sure to add "E-bus alternate feed switch - OFF"
to the post-flight check list.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=247068#247068
Message 3
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| Subject: | Re: Stereo to Mono |
Does anyone know if the 1/8-inch phone jack audio output on a Garmin
396 is stereo or monaural? I plan to route this output into the
monaural input of the intercom. If the Garmin output is stereo, I
can do the two-resistor mixer that was mentioned previously in this
thread.
Roger Cole
1946 Cessna 140, flying
Murphy Elite #709, working on fuselage
rcole927@earthlink.net
On Jun 5, 2009, at 12:40 AM, Chris Hand wrote:
> <If you don't have a MP3 player (iPod) get one. Walkman are last
> decades news. If you
> <don't have an iPod you can get 100's of hours of music on them
> with play time of 6 hours
> <per charge. They are also small and light weight.>
>
>
> Actually, I use a Sony Walkman in my RV-6A that has something on
> the order of 400+ songs right now with plenty of storage room to
> spare for more songs, videos, photos, etc. Weighs a few ounces,
> plugs into my intercom, didn't cost much, and works great. It's a
> Sony Walkman digital media player - smaller physical size than the
> i-pods my kids prefer and does all I want for the RV. Although
> once upon a time I did have one of the Walkman units you are
> talking about, Sony has rehashed the name with current
> technology.....not sure which era Don's Walkman is from.
>
> Chris
>
> ----- Original Message -----
> From: gmcjetpilot@yahoo.com
> To: aeroelectric-list@matronics.com ; don@contractorsnorthwest.com
> Sent: Monday, June 01, 2009 3:00 AM
> Subject: AeroElectric-List: Re: Stereo to Mono
>
> I would not use a stereo to mono jack to go FROM stereo to MONO. It
> really is made
> for going from mono to drive a stereo headphone, split to drive
> both L & R channels.
> It is not designed to combine stereo to mono.
>
> Whats the big deal? Shorting L & R of an amp can cause damage, even
> an iPod. If the
> "Walkman" has a mono switch than its OK, but iPods do not have mono
> switches.
>
> If you don't have a MP3 player (iPod) get one. Walkman are last
> decades news. If you
> don't have an iPod you can get 100's of hours of music on them with
> play time of 6 hours
> per charge. They are also small and light weight.
>
> There are some threads on how to properly combine stereo and ground
> issues in this
> forum. Just use the search engine. The easy way is with capacitor
> and resistor, which
> you can wire behind the panel. You would use a stereo 1/8" phone
> jack and then
> go from stereo to mono with the isolation Cap and Resistor.
>
> Cheers George
>
>
> >From: <bakerocb@cox.net>
> >Subject: AeroElectric-List: Stereo to Mono
> >
> >5/30/2009
> >Hello Don, You wrote: "I want to install a plug in my panel to
> plug my
> >stereo Walkman into but my intercom (PM1000 II) is mono."
> >Here is one way to solve that problem --
>
> >http://www.radioshack.com/product/index.jsp?productId=2102669
>
> >This adapter will put the output of a mono jack on your panel into
> both
> >sides of your stereo Walkman.
>
> >Also take a look at some of the other adapters available. You may
> want to
> >put a normal airplane earphone sized jack on your instrument panel
> so that
> >either your Walkman (with an adapter) or an airplane earphone set
> (without
> >adapter) may be plugged in.
> >
> >===========================
> >>
> >>Subject: AeroElectric-List: Stereo to Mono
> >>From: "Don McIntosh" <don@contractorsnorthwest.com>
> >>
> >>I want to install a plug in my panel to plug my stereo Walkman
> into but my
> >>intercom (PM1000 II) is mono. Can I just splice the Right and
> Left leads together
> >>to go into the intercom? Also the intercom pins are labeled "HI"
> and "LOW".
> >>Is this just the pin identification numbers?
> >>--------
> >>Don McIntosh
> >>Kitfox Series 7 under construction
> >>Jabiru 3300
>
> href="http://www.matronics.com/Navigator?AeroElectric-List">http://
> www.matronics.com/Navigator?AeroElectric-List
> href="http://forums.matronics.com">http://forums.matronics.com
> href="http://www.matronics.com/contribution">http://
> www.matronics.com/c
>
>
Message 4
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| Subject: | xponder ant mounting |
Since I already installed a reinforcement plate into the floor of my tailcone to
mount my ground power receptacle, is there any reason that I can't mount my
transponder antenna into the same plate an inch or two from the piper plug receptacle?
Thanks in advance. I am loathe to drill holes into my skin without checking first.
--------
Myron Nelson
Mesa, AZ
Emp completed, legacy build fuse in progress
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=247103#247103
Message 5
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| Subject: | Re: Stereo to Mono |
I think I have a similar problem in a spam can. There is a 1/8 plug
coming out of the intercom that I can plug into a Garmin 496. The
results are audible but poor. XM radio is barely audible but verbal
warnings from the 496 are much clearer. Could it be that I need a 1/8
mono to stereo adapter or is additional wiring required?
Can I measure the resistance of the adapter to determine if it contains
more than a solid connection?
John Morgensen
Roger Cole wrote:
> Does anyone know if the 1/8-inch phone jack audio output on a Garmin
> 396 is stereo or monaural? I plan to route this output into the
> monaural input of the intercom. If the Garmin output is stereo, I can
> do the two-resistor mixer that was mentioned previously in this thread.
>
> Roger Cole
> 1946 Cessna 140, flying
> Murphy Elite #709, working on fuselage
> rcole927@earthlink.net <mailto:rcole927@earthlink.net>
>
Message 6
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| Subject: | Wiring is done but SL-30 comm won't transmit |
I used the bottom half of the Z-13 or I guess the Z-11 drawings.
Finally turned on the Master Switch. The good news all the smoke stayed
in the wires and the fuses didn't blow. The radio receives loud and
clear. The only problem is when I hit the PTT on the SL-30 all I get is
a loud squeal, thank goodness ground control didn't know where it was
coming from, where do I start looking, using the old look for the simple
fixes first? I have the CH stick grips with the PTT in the trigger
portion. I'm sure that I'm not the first that has experienced this
problem but couldn't find anything in the archives so would appreciate
any helpful suggestions.
Jim Thorne
RV-7A CHD
Getting close
Message 7
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| Subject: | Cessna 150F Landing/Taxi light switch. |
I have a very basic question. The switch in question burnt out so I
obtained a replacement. For the life of me I can't figure out which wire
goes where. I have three wires, power and feeds to the Landing and Taxi
lights. The switch has four connectors marked H,R,A, B. The case is
marked 600 and is a pull switch with two positions.
Can anyone help? I am aware it is not RV related. When I'm not flying my
RV4 I have the Cessna to take pictures etc.
SSD
Message 8
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| Subject: | Re: Wiring is done but SL-30 comm won't transmit |
Jim,
I had the same thing and it turned out to be a shorted antenna cable.
Disconnect the cable at both ends and use an ohm meter to determine if
the center connector is shorted to the ground. In my case, one of the
BNC connectors was shorted.
Hope this helps.
Floyd Wilkes
601XL
----- Original Message -----
From: Jim Thorne
To: aeroelectric-list@matronics.com
Sent: Saturday, June 06, 2009 5:55 PM
Subject: AeroElectric-List: Wiring is done but SL-30 comm won't
transmit
I used the bottom half of the Z-13 or I guess the Z-11 drawings.
Finally turned on the Master Switch. The good news all the smoke stayed
in the wires and the fuses didn't blow. The radio receives loud and
clear. The only problem is when I hit the PTT on the SL-30 all I get is
a loud squeal, thank goodness ground control didn't know where it was
coming from, where do I start looking, using the old look for the simple
fixes first? I have the CH stick grips with the PTT in the trigger
portion. I'm sure that I'm not the first that has experienced this
problem but couldn't find anything in the archives so would appreciate
any helpful suggestions.
Jim Thorne
RV-7A CHD
Getting close
Message 9
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| Subject: | Re: Wiring is done but SL-30 comm won't transmit |
When you hit the trigger, does the SL30 TX light go on - indicating that
the mic was keyed?
----- Original Message -----
From: Jim Thorne
To: aeroelectric-list@matronics.com
Sent: Saturday, June 06, 2009 6:55 PM
Subject: AeroElectric-List: Wiring is done but SL-30 comm won't
transmit
I used the bottom half of the Z-13 or I guess the Z-11 drawings.
Finally turned on the Master Switch. The good news all the smoke stayed
in the wires and the fuses didn't blow. The radio receives loud and
clear. The only problem is when I hit the PTT on the SL-30 all I get is
a loud squeal, thank goodness ground control didn't know where it was
coming from, where do I start looking, using the old look for the simple
fixes first? I have the CH stick grips with the PTT in the trigger
portion. I'm sure that I'm not the first that has experienced this
problem but couldn't find anything in the archives so would appreciate
any helpful suggestions.
Jim Thorne
RV-7A CHD
Getting close
Message 10
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| Subject: | Re: Stereo to Mono |
The Garmin 396 owner's manual makes reference to connecting stereo
headphones to the audio jack on the 396 (p114). I plug my 396 into my car
stereo's aux port all the time. I'm pretty sure I get stereo signals from
it.
Regards,
Matt-
> I think I have a similar problem in a spam can. There is a 1/8 plug
> coming out of the intercom that I can plug into a Garmin 496. The
> results are audible but poor. XM radio is barely audible but verbal
> warnings from the 496 are much clearer. Could it be that I need a 1/8
> mono to stereo adapter or is additional wiring required?
>
> Can I measure the resistance of the adapter to determine if it contains
> more than a solid connection?
>
> John Morgensen
>
> Roger Cole wrote:
>> Does anyone know if the 1/8-inch phone jack audio output on a Garmin
>> 396 is stereo or monaural? I plan to route this output into the
>> monaural input of the intercom. If the Garmin output is stereo, I can
>> do the two-resistor mixer that was mentioned previously in this thread.
>>
>> Roger Cole
>> 1946 Cessna 140, flying
>> Murphy Elite #709, working on fuselage
>> rcole927@earthlink.net <mailto:rcole927@earthlink.net>
>>
>
>
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