Today's Message Index:
----------------------
1. 05:01 AM - Icom 210 radio intercom switch (chris Sinfield)
2. 07:29 AM - Re: GPS outage in fiberglass plane (Jeff Page)
3. 08:04 AM - Re: Re: GPS outage in fiberglass plane (Kelly McMullen)
4. 11:13 AM - Re: Icom 210 radio intercom switch (Robert L. Nuckolls, III)
5. 01:08 PM - Z-11 Drawing with LR3C Controller? (stearman456)
6. 01:39 PM - Re: Icom 210 radio intercom switch (Gordon Parker)
7. 01:53 PM - Re: Re: GPS outage in fiberglass plane (rayj)
8. 05:57 PM - Re: Re: splicing wire? (James Robinson)
9. 08:29 PM - Molex Connectors out of production (Robert L. Nuckolls, III)
10. 08:44 PM - Re: Icom 210 radio intercom switch (Robert L. Nuckolls, III)
11. 08:50 PM - Re: Z-11 Drawing with LR3C Controller? (Robert L. Nuckolls, III)
12. 08:52 PM - Re: Re: splicing wire? (Robert L. Nuckolls, III)
13. 09:27 PM - Re: Re: splicing wire? (James Robinson)
14. 09:50 PM - Re: Molex Connectors out of production (Gordon Parker)
Message 1
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| Subject: | Icom 210 radio intercom switch |
Hi
I am wiring up my Icom 210 for my little 2 seater plane and plan to use the radios
own internal intercom.
In the wiring diagram there is a intercom switch, but for the life of me I cannot
find what this is used for and if I need to wire it in or not? I though it
was all built inwith this radio?
Any Ideas out there?
Chris
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=310464#310464
Message 2
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| Subject: | re: GPS outage in fiberglass plane |
I will add another data point concerning radios interfering with GPS
reception.
I recently installed a Garmin 430W in my Cessna 172 (probably doubled
its value, but the unit will be removed for installation into the
airplane I am building).
I worked with an avionics shop that was willing to supervise me doing
much of the work as a learning experience - and it was !
The Garmin installation manual cautions against installing the GPS
antenna within 4 feet of other antennas. The cabin roof of the Cessna
makes that goal impossible to meet.
For simplicity, we chose to re-use the same mounting location as the
old GPS antenna, which is a foot away from the antenna of the King
KX-175B radio.
There are a number of tests required in the Garmin installation
manual, including transmitting with each radio on the following
frequencies for 35 seconds, while watching the satellite reception
screen:
121.150, 121.175, 121.200, 121.225, 121.250
131.200, 131.225, 131.250, 131.275, 131.300, 131.325, 131.350
In my case the 131MHz frequencies interfered. Not just slightly, but
completely killed reception of all GPS satellites. The strength bars
went to zero immediately. The 430W required more than a minute to
recover after unkeying the transmitter.
I swapped the COM antennas between the 430W and the KX-175B. The 430W
produced a cleaner transmission that did not interfere with GPS
reception. The transmissions of the KX-175B, with the antenna now 3
feet away from the GPS antenna, only slightly interfered (lost 10-20%
of signal strength) and did not prevent reception from even the
marginal satellites. So problem simply resolved.
Where I fly, I rarely use frequencies in the 131MHz range, so without
doing this test I might have happily flown for quite a number of
hours, only to be confounded with lack of GPS navigation at some
future point.
I recommend everyone perform this test, since it is so quite and easy to do.
Jeff Page
Dream Aircraft Tundra #10
Message 3
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| Subject: | Re: re: GPS outage in fiberglass plane |
Keep in mind that it is not just transmitting that creates
interference. Having the radio simply tuned to a frequency and turned
on can also cause the problem. There are also nav frequencies that need
to be checked. They are not in the AC, but this site has more detail of
documented issues for specific radio models:
http://www.scn.org/~bk269/gps.html
On 8/29/2010 7:26 AM, Jeff Page wrote:
>
> I will add another data point concerning radios interfering with GPS
> reception.
>
> I recently installed a Garmin 430W in my Cessna 172 (probably doubled
> its value, but the unit will be removed for installation into the
> airplane I am building).
> I worked with an avionics shop that was willing to supervise me doing
> much of the work as a learning experience - and it was !
>
> The Garmin installation manual cautions against installing the GPS
> antenna within 4 feet of other antennas. The cabin roof of the Cessna
> makes that goal impossible to meet.
> For simplicity, we chose to re-use the same mounting location as the
> old GPS antenna, which is a foot away from the antenna of the King
> KX-175B radio.
>
> There are a number of tests required in the Garmin installation
> manual, including transmitting with each radio on the following
> frequencies for 35 seconds, while watching the satellite reception
> screen:
>
> 121.150, 121.175, 121.200, 121.225, 121.250
> 131.200, 131.225, 131.250, 131.275, 131.300, 131.325, 131.350
>
> In my case the 131MHz frequencies interfered. Not just slightly, but
> completely killed reception of all GPS satellites. The strength bars
> went to zero immediately. The 430W required more than a minute to
> recover after unkeying the transmitter.
>
> I swapped the COM antennas between the 430W and the KX-175B. The 430W
> produced a cleaner transmission that did not interfere with GPS
> reception. The transmissions of the KX-175B, with the antenna now 3
> feet away from the GPS antenna, only slightly interfered (lost 10-20%
> of signal strength) and did not prevent reception from even the
> marginal satellites. So problem simply resolved.
>
> Where I fly, I rarely use frequencies in the 131MHz range, so without
> doing this test I might have happily flown for quite a number of
> hours, only to be confounded with lack of GPS navigation at some
> future point.
>
> I recommend everyone perform this test, since it is so quite and easy
> to do.
>
> Jeff Page
> Dream Aircraft Tundra #10
>
>
Message 4
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| Subject: | Re: Icom 210 radio intercom switch |
At 06:59 AM 8/29/2010, you wrote:
><chris_sinfield@yahoo.com.au>
>
>Hi
>I am wiring up my Icom 210 for my little 2 seater plane and plan to
>use the radios own internal intercom.
>
>In the wiring diagram there is a intercom switch, but for the life
>of me I cannot find what this is used for and if I need to wire it
>in or not? I though it was all built inwith this radio?
I've looked over the operations manual for the A210 and
there IS an intercom built in. However, it can be switched
off and on from front panel controls. It's not clear to me
in my quick trip through the manual what the external
switch is for. My best guess is that it might be a way
that a "back seater" can turn the intercom off and on.
I'd bring a wire out from pin 10 on the radio that's
long enough to gain access to the end AFTER installation.
Tie it up in the wire bundle and hopefully forget it.
If at some time the future it is discovered to be
useful, the task of integrating its function into
your project will be greatly eased.
Perhaps other A210 users on the List can offer more
detailed guidance.
Bob . . .
Message 5
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| Subject: | Z-11 Drawing with LR3C Controller? |
Hi Bob,
Just reading the note in Rev 12A about Fig Z-11 and it says that Z-11 was redrawn
with the B&C combo regulator/OV/LV controller but in my book it doesn't have
it. Is there a revised drawing that I can download somewhere?
thanks,
Dan
warbirds@shaw.ca
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=310520#310520
Message 6
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| Subject: | Icom 210 radio intercom switch |
Bob and Chris: I too am trying to use the A 210. I am using a flightcom
intercom seperate from the one built in. I understand that the built in on
e hasto use a push to talk button. And it is not voice activated. BTW Bob
where can I obtain the book you have out. I have been trying to fined out
. Thanks: Gordon
>
kolls.bob@aeroelectric.com>
>
> At 06:59 AM 8/29/2010=2C you wrote:
> ><chris_sinfield@yahoo.com.au>
> >
> >Hi
> >I am wiring up my Icom 210 for my little 2 seater plane and plan to
> >use the radios own internal intercom.
> >
> >In the wiring diagram there is a intercom switch=2C but for the life
> >of me I cannot find what this is used for and if I need to wire it
> >in or not? I though it was all built inwith this radio?
>
> I've looked over the operations manual for the A210 and
> there IS an intercom built in. However=2C it can be switched
> off and on from front panel controls. It's not clear to me
> in my quick trip through the manual what the external
> switch is for. My best guess is that it might be a way
> that a "back seater" can turn the intercom off and on.
>
> I'd bring a wire out from pin 10 on the radio that's
> long enough to gain access to the end AFTER installation.
> Tie it up in the wire bundle and hopefully forget it.
> If at some time the future it is discovered to be
> useful=2C the task of integrating its function into
> your project will be greatly eased.
>
> Perhaps other A210 users on the List can offer more
> detailed guidance.
>
>
> Bob . . .
>
>
===========
===========
===========
===========
>
>
>
Message 7
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| Subject: | Re: re: GPS outage in fiberglass plane |
Slightly off topic. Does anyone have any info on similar problems
occurring on GPS caused by marine radios? Any info would be appreciated.
do not archive
Thanks,
Raymond Julian
Kettle River, MN
On 08/29/2010 09:26 AM, Jeff Page wrote:
>
> I will add another data point concerning radios interfering with GPS
> reception.
>
> I recently installed a Garmin 430W in my Cessna 172 (probably doubled
> its value, but the unit will be removed for installation into the
> airplane I am building).
> I worked with an avionics shop that was willing to supervise me doing
> much of the work as a learning experience - and it was !
>
> The Garmin installation manual cautions against installing the GPS
> antenna within 4 feet of other antennas. The cabin roof of the Cessna
> makes that goal impossible to meet.
> For simplicity, we chose to re-use the same mounting location as the
> old GPS antenna, which is a foot away from the antenna of the King
> KX-175B radio.
>
> There are a number of tests required in the Garmin installation
> manual, including transmitting with each radio on the following
> frequencies for 35 seconds, while watching the satellite reception
> screen:
>
> 121.150, 121.175, 121.200, 121.225, 121.250
> 131.200, 131.225, 131.250, 131.275, 131.300, 131.325, 131.350
>
> In my case the 131MHz frequencies interfered. Not just slightly, but
> completely killed reception of all GPS satellites. The strength bars
> went to zero immediately. The 430W required more than a minute to
> recover after unkeying the transmitter.
>
> I swapped the COM antennas between the 430W and the KX-175B. The 430W
> produced a cleaner transmission that did not interfere with GPS
> reception. The transmissions of the KX-175B, with the antenna now 3
> feet away from the GPS antenna, only slightly interfered (lost 10-20%
> of signal strength) and did not prevent reception from even the
> marginal satellites. So problem simply resolved.
>
> Where I fly, I rarely use frequencies in the 131MHz range, so without
> doing this test I might have happily flown for quite a number of
> hours, only to be confounded with lack of GPS navigation at some
> future point.
>
> I recommend everyone perform this test, since it is so quite and easy
> to do.
>
> Jeff Page
> Dream Aircraft Tundra #10
>
>
Message 8
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| Subject: | Re: splicing wire? |
Good Afternoon Bob
I spliced the wires as you suggested. I spliced all wires including the
shield. When all finished I have good intercom between headsets, the co pilot
transmit works good, but the pilot headset has a whine/squeal when
transmitting. What should I look for to correct this?
Jim
James Robinson
Glasair lll N79R
Spanish Fork UT U77
________________________________
From: "Robert L. Nuckolls, III" <nuckolls.bob@aeroelectric.com>
Sent: Sat, August 28, 2010 1:26:30 PM
Subject: AeroElectric-List: Re: splicing wire?
At 01:57 PM 8/28/2010, you wrote:
Good afternoon Bob
>I have a question on splicing wire. I need to lengthen the wires to my headset
>plugs from the intercom. ( NAT intercom). They currently go to plugs in the
>center console. I was originally going to run new wires all the way to the
>intercom. This is proving to be a major undertaking. Everything is bundled and
>nicely tied and very difficult to get to. Can I add a length of wire to the
>existing without creating problems? Would there be any considerations I would
>need to address?
Sure. the big guys do it all the time. They use a
product called solder-sleeves. You don't need to get
THAT fancy. I've illustrated a poor-man's solder sleeve
technique here:
http://aeroelectric.com/Pictures/Wiring_Technique/Wire_treatment_3.jpg
and a comic book on the technique here:
http://aeroelectric.com/articles/Solder_Lap_Splicing/Solder_Lap_Splices.html
If you have some shields to deal with, just bring
their pigtails together as if they were individual
wires.
This technique offers a minimum-bulk methodology
for jointing wires and insulating the splice. If practical,
you might want to trim the lengths of the existing
wires so that the splices don't all bunch up next
to each other in the finished bundle.
Bob . . .
Message 9
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| Subject: | Molex Connectors out of production |
Any of you folks who own Icom 200 series transceivers,
I was tracking down connectors for a OBAM aircraft brother
and note that the part is now or soon to be discontinued.
>Comments/Questions: Bob, I'm stumped and I think the answer is
>likely a simple one, but I cannot find it. I have an ICOM A200 radio
>that I bought used, and had it checked out by an avionics shop about
>a year ago. I'm building a Zenith CH 701 and now I cannot find the
>Molex 4338-15 connector that is described in the installation
>manual. I've search the internet and the only place that even lists
>such a part number is in Australia. My guess is this is readily
>available at an electronics store, but I don't know what to call it.
>Can you help me?
The 4338 is a model number. The actual part number you
want is 09-50-6155
I'm told this part is obsolete and the manufacturer
intends to discontinue the part. There is stock at
Newark Electronics.
http://tinyurl.com/29wlrrx
You'll also need pins sold separately
http://tinyurl.com/2arg72m
Good luck. You might want to order spares! Went
present stocks are gone, there won't be any more.
Bob . . .
Message 10
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| Subject: | Icom 210 radio intercom switch |
At 03:37 PM 8/29/2010, you wrote:
>Bob and Chris: I too am trying to use the A 210. I am using a
>flightcom intercom seperate from the one built in. I understand
>that the built in one has to use a push to talk button. And it is
>not voice activated.
Funny you should offer this assertion. Here's a clip from
the Icom A-210 Manual at
http://aeroelectric.com/Mfgr_Data/Radios/Icom_A210/IC-A210_User%27s_Manual.pdf
From page 20
Emacs!
From page 27
Emacs!
They use the words "voice activated" but the switching
is suspicious. Provisions for an external intercom PTT
suggests that it's not really voice activated but in fact
a "hot mic" system that is turned ON by either the
front panel control as described above or ON/OFF by
external PTT switches wired to pin 10. I'd bet that
the built-in feature is indeed a PTT intercom.
Bob. . .
>
>BTW Bob where can I obtain the book you have out. I have been
>trying to fined out. Thanks: Gordon
You can get the bound book -OR- a .pdf version on
CD + bonus Pak of data from our catalog at:
https://matronics.com/aeroelectric/Catalog/AECcatalog.html
you can download the .pdf version at:
http://www.aeroelectric.com/Book/AEC12A_PDF.zip
Bob . . .
Message 11
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| Subject: | Re: Z-11 Drawing with LR3C Controller? |
At 03:06 PM 8/29/2010, you wrote:
>
>Hi Bob,
>
>Just reading the note in Rev 12A about Fig Z-11 and it says that
>Z-11 was redrawn with the B&C combo regulator/OV/LV controller but
>in my book it doesn't have it.
I need to fix that note. Z-11 was intended to be the
"poor builder's" elegant solution for an electrical system,
hence the $10 regulator.
> Is there a revised drawing that I can download somewhere?
Z-12 uses the B&C LR series regulators. Just drop
the wiring shown for the main alternator on Z-12
into Z-11.
Bob . . .
Message 12
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| Subject: | Re: splicing wire? |
At 07:54 PM 8/29/2010, you wrote:
>Good Afternoon Bob
>I spliced the wires as you suggested. I spliced all wires
>including the shield. When all finished I have good intercom
>between headsets, the co pilot transmit works good, but the pilot
>headset has a whine/squeal when transmitting. What should I look
>for to correct this?
Is this a new condition that cropped up when you extended
the wires? One side works but the pilot side doesn't . ..
hmmm . . . might be a wiring error of some variety.
Bob . . .
Message 13
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| Subject: | Re: splicing wire? |
Yes it occurred after the splicing of the wires. Any suggestions where to
look. All the features work, intercom and transmit/receive both pilot and
co-pilot. The problem is in the transmit pilot side only. What type of error
should I be looking for?
Jim
PS Your up late tonight
James Robinson
Glasair lll N79R
Spanish Fork UT U77
________________________________
From: "Robert L. Nuckolls, III" <nuckolls.bob@aeroelectric.com>
Sent: Sun, August 29, 2010 9:47:59 PM
Subject: Re: AeroElectric-List: Re: splicing wire?
<nuckolls.bob@aeroelectric.com>
At 07:54 PM 8/29/2010, you wrote:
> Good Afternoon Bob
> I spliced the wires as you suggested. I spliced all wires including the
>shield. When all finished I have good intercom between headsets, the co pilot
>transmit works good, but the pilot headset has a whine/squeal when
>transmitting. What should I look for to correct this?
Is this a new condition that cropped up when you extended
the wires? One side works but the pilot side doesn't . ..
hmmm . . . might be a wiring error of some variety.
Bob . . .
Message 14
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| Subject: | Molex Connectors out of production |
Bob: I went thru all of this last week. I spent time on the phone with Da
vid Graham@Moles.com. Phone 800-786-6539 ext: 555-2125 . He told me that
connector 4338-15 that Icom has in their supplied parts for new transceive
r are now obsolete .The Molex terminals (4366-GL) have a new part number an
d is 8030304 and is available thru MOUSER ELECTRONICS. I ordered somelast
week and was told it would be 5 days before they get any in. There 13 cent
s each.
Might try ICOM direct in Belview Washington. They usually have some of the
se products. Gordon
Any of you folks who own Icom 200 series transceivers=2C
I was tracking down connectors for a OBAM aircraft brother
and note that the part is now or soon to be discontinued.
Comments/Questions: Bob=2C I'm
stumped and I think the answer is likely a simple one=2C but I cannot find
it. I have an ICOM A200 radio that I bought used=2C and had it checked out
by an avionics shop about a year ago. I'm building a Zenith CH 701 and
now I cannot find the Molex 4338-15 connector that is described in the
installation manual. I've search the internet and the only place that
even lists such a part number is in Australia. My guess is this is
readily available at an electronics store=2C but I don't know what to call
it. Can you help me?
The 4338 is a model number. The actual part number you
want is 09-50-6155
I'm told this part is obsolete and the manufacturer
intends to discontinue the part. There is stock at
Newark Electronics.
http://tinyurl.com/29wlrrx
You'll also need pins sold separately
http://tinyurl.com/2arg72m
Good luck. You might want to order spares! Went
present stocks are gone=2C there won't be any more.
Bob . . .
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