Today's Message Index:
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1. 05:42 AM - radio light (bob noffs)
2. 07:15 AM - Re: radio light (Ken)
3. 08:52 AM - Re: Garmin 327 XPDR Cable & Artex me406 ELT cable (Bill McMullen)
4. 09:47 AM - How to (sc...) ruin your VHF (Gilles Thesee)
5. 10:12 AM - Re: radio light (Carlos Trigo)
6. 10:12 AM - Re: Electronics stolen (David Abrahamson)
7. 12:31 PM - Re: radio light (luigit@freemail.it)
8. 01:25 PM - Re: Electronics stolen (Daniel De Winter)
9. 02:33 PM - Re: radio light (LarryMcFarland)
10. 04:17 PM - Garmin 327 XPDR Cable & Artex me406 ELT cable (Jeff)
Message 1
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hi all,
i have just gotten my icom 200 wired and it works! no credit to me , i
had help. the radio reqiures a separate power feed for its lighting. the
plane will be used daytime vfr only. i could wire the lighting on always
, wire it to go on with the nav lights, and numerous other ways. not a
very big deal but i wanted to hear if there is a logical reason to do it
one way versus another. thanks
bob noffs
Message 2
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Hi Bob
FWIW I have a bright/off/dim switch on mine because I like it dimmed at
night. On bubble canopy aircraft it doesn't seem to make much difference
whether it is lighted during daytime but in my high wing machine with
sunglasses on, the light does seem to make it slightly easier to read
during the day. Actually when I realized that all the little lights
were incandescant instead of LED's, I put a 10 ohm resistor in series
with the light for the bright setting to insure long life but I have no
real idea of the bulb life without the resistor. My dim position puts a
22 ohm resistor in series with the lights. It would have been fine wired
to the instrument light dimmer as well but I wanted it on when the other
things were turned off.
Another peculiarity I had was that the mic gain on the top of the radio
was set too high from the factory for any mic that I tried which
resulted in poor transmissions initially.
Ken
bob noffs wrote:
> hi all,
> i have just gotten my icom 200 wired and it works! no credit to me ,
> i had help. the radio reqiures a separate power feed for its lighting.
> the plane will be used daytime vfr only. i could wire the lighting on
> always , wire it to go on with the nav lights, and numerous other
> ways. not a very big deal but i wanted to hear if there is a logical
> reason to do it one way versus another. thanks
> bob noffs
Message 3
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Subject: | Re: Garmin 327 XPDR Cable & Artex me406 ELT cable |
The Artex ME406 manual that I have is very clear that shielded 5 wire cable is
only recommended. They further state that shielded 4 conductor cable can be used
where the shield is used as the ground wire. This latter method can also
be used for upgrade compatibility. I wired my remote for an Artex ELT-200 using
4 conductor shielded wire in such a way that it can later be used for an ME-406
replacement simply by changing the ELT plug.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=115060#115060
Message 4
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Subject: | How to (sc...) ruin your VHF |
Hi all,
Recently a buddy building a microlight asked for some help wiring his
electrical circuit. He had already installed everything on the panel.
The wiring went well until a few days ago when powering up the brand new
Microair 760 VHF and PM-501 intercom. While the VHF back light was
glowing, the VHF display remained blank and nothing worked.
After checking every wire in the circuit, much head scratching, and
enduring some veiled accusation of inverting polarities, etc., I called
the seller and brought him the Microair. He diagnosed a blown internal
fuse, due to some overvoltage or polarity inversion. But he was gracious
enough not to openly saying I was the culprit...The VHF was quickly
tested on the bench, with a dummy antenna load.
Back to the hangar I double-checked the supplied harness and my wiring,
opening every thermosleeve to make sure nothing was wrong, then my buddy
reinstalled the radio. Same behavior : the VHF display stays blank,
while the intercom works as expected.
This time I removed the VHF from the panel myself, and guess what ? My
buddy had changed the supplied black screws for SS socket screws more to
his taste. And those screws seemed very long. Indeed looking into the
screw holes, the PC board seemed very close...
I reminded my buddy of the red notice in the manual about the screw length.
Back to the dealer again, and indeed, once the radio was opened, we
could clearly see where the screws had damage the PC board. The internal
fused was changed once again, and the radio tested on the bench, but in
the aircraft (without the screws...), the display was OK, but all I
could hear was a garbled local music broadcast and no aviation transmission.
The little VHF will have to be sent to an approved avionics repair shop...
Morality : read the manual, and do NOT change the screws....
Best regards,
Gilles Thesee
http://contrails.free.fr
Message 5
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I couldn't resist to ask you 2 naughty questions:
If you airplane will be used daytime vfr only, why does it have nav
lights for?
Second question, even if you don't want to get rid of those (perhaps
useless) nav lights, are you wanting to turn them on whenever you feel
you need to turn on your radio's lighting?
Now more seriously, wire your radio lighting to its own power (lighting
always on if the radio is on), or to the instruments lighting, if your
plane has it.
Carlos
----- Original Message -----
From: bob noffs
To: aeroelectric list
Sent: Sunday, May 27, 2007 2:38 PM
Subject: AeroElectric-List: radio light
hi all,
i have just gotten my icom 200 wired and it works! no credit to me ,
i had help. the radio reqiures a separate power feed for its lighting.
the plane will be used daytime vfr only. i could wire the lighting on
always , wire it to go on with the nav lights, and numerous other ways.
not a very big deal but i wanted to hear if there is a logical reason to
do it one way versus another. thanks
bob noffs
Message 6
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Subject: | Re: Electronics stolen |
That's a terrible shame Danny. It makes me and all of us, I am sure,
shudder to think of someone ripping our avionics out of the
airplane. I will note your data and keep it for further reference.
Best,
David
Message 7
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Message 8
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Subject: | Re: Electronics stolen |
Thanks David, I hope all aviation enthousiastics will do so...
Daniel
----- Original Message ----
From: David Abrahamson <dave@abrahamson.net>
Sent: Sunday, 27 May, 2007 7:11:58 PM
Subject: Re: AeroElectric-List: Electronics stolen
That's a terrible shame Danny. It makes me and all of us, I am sure,
shudder to think of someone ripping our avionics out of the
airplane. I will note your data and keep it for further reference.
Best,
David
___________________________________________________________
Yahoo! Answers - Got a question? Someone out there knows the answer. Try it
now.
http://uk.answers.yahoo.com/
Message 9
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Hi Luigi,
I believe what you are saying is correct and if you look at the bottom
diagram of the drawing
I did for my ICom 200 radio and intercom set, the three wires you speak
of for the mic and headset
are shown.
http://www.macsmachine.com/images/electrical/full/primary-wiring-(SH-2).gif
Larry McFarland 601HDS at www.macsmachine.com
> Hi all.
>
> Installing my Icom 200 I have a question.
>
> I have a three wire shielded cable available and I wish to use it for
> the microphone and the phones jacks at the same time ,two wire for the
> mike and one for the earphone, using the shield for both. Is my
> project applicable ? Is there any problem arising with this scheme ?
>
> Thank you for the help.
>
> Luigi
>
> Rome, Italy
>
>
>
Message 10
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Subject: | Garmin 327 XPDR Cable & Artex me406 ELT cable |
Bob,
Working with the calculator and talking to an electrical engineer
here I pretty much got an understanding of attenuation for practical
purposes. I got a lead on a "sample" of RG304 that the engineer might be
able to locate. Four conductor double shielded cable will work for the
Artex ELT, so I'll go that route. The shield the then used as the ground
connector per the Artex installation instructions. As others go the 406
route and the February 2009 date gets closer, I suspect that demand will
grow. Again, thanks for the reply on a holiday weekend. Please enjoy your
Memorial Day.
Jeff Davidson
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