Today's Message Index:
----------------------
1. 01:26 AM - Re: Z-11 Drawing with LR3C Controller? (stearman456)
2. 04:46 AM - Re: Re: GPS outage in fiberglass plane (darnpilot@aol.com)
3. 05:46 AM - AeroElectric List access (Robert L. Nuckolls, III)
4. 08:04 AM - Icom switch (Dan Ballin)
5. 01:27 PM - noise in intercom (kgmjeric)
6. 02:24 PM - Splicing small wires (Fergus Kyle)
7. 07:13 PM - Re: Icom 210 radio intercom switch (Kevin Boddicker)
8. 08:07 PM - Progressive switch for electric trim (Daniel Hooper)
Message 1
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| Subject: | Re: Z-11 Drawing with LR3C Controller? |
Ok - that's kinda what I was doing anyway, just thought I'd check for the deluxe
schematic!
thanks,
Dan
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=310590#310590
Message 2
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| Subject: | Re: re: GPS outage in fiberglass plane |
Bob,
I am trying to get on the forum to ask/submit questions, but I cannot. I
registered a few days ago, so I am in the system, but every time I try to
log it, it says I am not a registered user. How can I get this cleared
up?
Thank you.
Jeff
Jeff
Jacksonville, FL
__i__
*-----o--o--(_)--o--o-----*
-----Original Message-----
From: Kelly McMullen <kellym@aviating.com>
Sent: Sun, Aug 29, 2010 11:02 am
Subject: Re: AeroElectric-List: re: GPS outage in fiberglass plane
om>
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 > airpl
ane 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 > ant
enna 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-1
75B radio.
>
> There are a number of tests required in the Garmin installation > manual
, including transmitting with each radio on the following > frequencies fo
r 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 > we
nt 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 > recepti
on. 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 satellit
es. 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
>
>
>
>
>
>
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Message 3
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| Subject: | AeroElectric List access |
At 06:44 AM 8/30/2010, you wrote:
>Bob,
>
>I am trying to get on the forum to ask/submit questions, but I
>cannot. I registered a few days ago, so I am in the system, but
>every time I try to log it, it says I am not a registered user. How
>can I get this cleared up?
There are TWO gateways into the Matronics forums.
One is by way of your browser. You don't need an
email service for this activity. Use of this service
requires a SEPARATE account creation using a unique
user name and password.
The other is by means of an e-mail forwarding service . . .
all messages sent to a particular address are sent
out to all subscribers. No log-on or password
required.
You have checked the subscription boxes for
both individual postings and the daily digest
off ALL postings for the day. I'll suggest you
go back to http://matronics.com/subscribe
and UN-check either the digest or real-time
box. I recommend that you un-check the digest
box.
To ASK a question or start a new thread of discussion
you simply craft an email message and send it to:
aeroelectric-list@matronics.com
To respond to any other posting, you simply hit
the REPLY button on your e-mail client. You are
getting this message because you REPLIED to
a posting on another topic. I've changed the
title of the topic so as to 'unhook' our
conversation from the other one.
Your difficulty is probably based on a an
attempt to use the browser based service while
your subscription is for the email service.
You CAN do both. I occasionally use the browser
based service when I'm away from my personal
computers.
When I checked your subscription status a few
days ago, you WERE signed up for a number of
other forums. I see that you are now subscribed
to ONLY the AeroElectric List. Is this your
intention? You may want to go back and re-check
boxes for forums that were useful to you. Again,
I recommend that you check ONLY the real-time
and not the digest service.
Bob . . .
Message 4
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I work on lightsports and we had the Icom 200 now going to the 210. I
talked with them about the "switch". Basically it is a pilot isolate
switch. My understanding, and I would confirm with Icom, is that
without the switch, the intercom is always active which seems like a
good thing, except that both mics are active when one PTT is pushed.
This could lead to some interesting transmissions.
Dan Ballin
X-Air LLC
Message 5
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| Subject: | noise in intercom |
Taylorcraft 19 with electrice start, generator, nav lights, transponder, pseII
intercom, strobes, narco 120 radio.
I just added the intercom to the plane. The headset plugs are not grounded as they
are perfectly isolated in plastic mounts on wood in the wing. the wires are
shielded and terminate at the unit only.
At low rpm the intercom LED will flash between red and green back and forth. at
that time the system is unusable. many times at cruise rpm and lower rpm as well
i will hear a rhythmic tick sound, couple a second.
previously i could hear my strobes squeal at low rpm but it was faint and the ground
for them has been improved.
the pse box has a default circuit that only allows the co pilot to function when
there may be a problem. My unit goes to this function when my radio is turned
off. My radio doesnt receive and i have been using a hand held. but i must
keep power to my narco or the led on the intercom goes a yellow ish color and
defaults to co pilot. if i turn the power on the radio on the intercom functions
great but I end up being interrupted with noise or trash it pics up.
any help would be great.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=310703#310703
Message 6
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| Subject: | Splicing small wires |
I cannot pretend to be so wise as some on the net, but I do have a
small note to make when splicing the #18-on-down size wires, especially when
in crowded corners - I seem to specialize in wiring myself into a spiralling
corner.....
In radio I learned long ago you can't find the size you need to join
two wires. I hit upon the model aircraft shops for copper/brass tubing which
is nesting in size around these smaller wires. It's a pain to cut the tubing
and smooth the ends so that fine wire can enter so I do this in tens at one
time when the conditions dictate, either this or reading a good book. For a
couple of bucks and a warder file plus small-tooth saw, you can have a
pocketful of crimpable lengths just lying there waiting for redemption. The
simple crimper slides easily into tight spaces, and we're not welding power
cable here.
Just a thought.
Ferg
Europa XS A064
wiring wiring wiring
Message 7
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| Subject: | Re: Icom 210 radio intercom switch |
Bob,
I have one of these units. It works as voice activated to my
satisfaction. It my have some components that I do not understand, but
voice opens the squelch and squelch closes when silent. Many menus to
filter through, but once set it is a fine unit.
Kevin Boddicker
TriQ 200
Luaua, IA.
On Aug 29, 2010, at 10:43 PM, Robert L. Nuckolls, III wrote:
> 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
>
> =46rom page 20
> <232e5fd.jpg>
>
> =46rom page 27
>
> <232e67a.jpg>
>
>
> 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 8
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| Subject: | Progressive switch for electric trim |
Bob, list,
I was reading through a thread on Van's Air Force today and it got me thinking
about the approaches to elevator trim control. There seemed to be two camps:
People who use (on)-off-(on) type switches who have problems with sensitivity,
and people who have some kind of high/low motor speed switch, either manually controlled
or airspeed controlled with a Vertical Power (or similar) module.
>From a usability versus complexity standpoint, I was imagining a progressive-speed
switch, implemented as a 5-position switch:
(second-up) : fast down trim
(first-up) : slow down trim
center : trim stop
(first-down) : slow up trim
(second-down) : fast up trim
A quick search has not turned up any toggle switches of this kind, which may be
the real problem with this approach. Have you seen this approach elsewhere, or
have any part number suggestions?
Thanks,
--Daniel
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