Today's Message Index:
----------------------
1. 04:49 AM - Re: Radio Noise (Paul Franz - Merlin GT)
2. 05:40 AM - Re: Radio Noise (dave)
3. 05:45 AM - Re: Radio Noise (Weiss Richard)
4. 09:04 AM - Political Discussion (Guy Buchanan)
5. 02:02 PM - Re: Radio Noise (Noel Loveys)
6. 02:46 PM - Re: Political Discussion (Patrick Reilly)
7. 03:12 PM - Re: Radio Noise (Lynn Matteson)
8. 04:12 PM - Re: Kitfox-List Digest: Static port location (WurlyBird)
9. 04:21 PM - Re: Political Discussion (Guy Buchanan)
10. 04:42 PM - Re: Radio Noise (Roger McConnell)
11. 05:51 PM - Re: Radio Noise (Paul Franz - Merlin GT)
12. 06:24 PM - Re: Radio Noise (Noel Loveys)
13. 07:02 PM - Re: Radio Noise (Noel Loveys)
14. 07:54 PM - Re: Radio Noise (Paul Franz - Merlin GT)
15. 08:24 PM - Re: Radio Noise (Lynn Matteson)
16. 09:25 PM - Intermittent Ignition Issue (riquenkelly@aol.com)
Message 1
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On Sun, February 7, 2010 6:23 am, Roger McConnell wrote:
> Guy and Noel,
>
> Thanks for the advice. After old man winter eases up around here I will
> check these out. I really think it's something to do with the ignition
> system or a bad ground on a P-lead.
That's a possibility, for sure. I'm certainly not a radio expert but from my reading
and personal experience, I'll put my money on a loose or corroded connection at
one of
four places:
1) Radio power lead.
2) Radio ground wire.
3) Antenna ground connection to the ground plane.
4) Antenna cable connection especially at the end points of RG-58 coax.
Be sure to inspect crimped connectors for 1) and 2) carefully. Any corrosion at
these
connectors introduces capacitance and can act as an amplifier to introduce ignition
noise into the power side of the radio.
My favored resource for help with this kind of problem is the Aeroelectric list.
If
you are using the forum for this list (Kitfox), you can also read and post to the
Aeroelectric forum or any other Matronics forum.
--
Paul A. Franz
Registration/Aircraft - N14UW/Merlin GT
Engine/Prop - Rotax 914/NSI CAP
Bellevue WA
"We the People of the United States, in Order to form a more perfect
Union, establish Justice, insure domestic Tranquility, provide for
the common defence, promote the general Welfare, and secure the
Blessings of Liberty to ourselves and our Posterity, do ordain and
establish this Constitution for the United States of America. ...
Done ... the seventeenth day of September, in the year of our LORD
one thousand seven hundred and eighty seven."
-- George Washington and the Signers
"The Modern Liberal believes in the supremacy of the state, thereby
rejecting the principles of the Declaration and the order of the civil
society, in whole or part. For the Modern Liberal, the individual's
imperfection and personal pursuits impede the objective of a utopian
state. In this, Modern Liberalism promotes what French historian Alexis
de Tocqueville described as a soft tyranny, which becomes increasingly
more oppressive, potentially leading to a hard tyranny (some form of
totalitarianism). As the word 'liberal' is, in its classical meaning,
the opposite of authoritarian, it is more accurate, therefore, to
characterize the Modern Liberal as a Statist. ... The Statist ... knows
that despite his successful usurpations, enough citizens are still
skeptical and even distrustful of politicians and government that he
cannot force his will all at once. Thus he marches in incremental
steps, adjusting his pace as circumstances dictate. Today his pace is
more rapid, for resistance has slowed. ... The Conservative does not
despise government. He despises tyranny. This is precisely why the
Conservative reveres the Constitution and insists on adherence to it.
An 'effective' government that operates outside its constitutional
limitations is a dangerous government. ... The Conservative is alarmed
by the ascent of a soft tyranny.... He knows that liberty once lost is
rarely recovered. He knows of the decline and eventual failure of past
republics. And he knows that the best prescription for addressing
society's real and perceived ailments is not to further empower an
already enormous federal government beyond its constitutional limits,
but to return to the founding principles. A free people living in a
civil society, working in self-interested cooperation, and a government
operating within the limits of its authority promote more prosperity,
opportunity, and happiness for more people than any alternative.
Conservatism is the antidote to tyranny precisely because its
principles are the founding principles."
-- author and radio talk-show host Mark Levin in his book "Liberty and Tyranny"
Message 2
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Roger I sent this on sunday but it bounced back form matronics mail server. looks
like my ISP is blocked for mail
The original message was received at Sun, 7 Feb 2010 10:35:35 -0500
from node152.wl-a.pppoe.execulink.com [209.213.225.152]
----- The following addresses had permanent fatal errors -----
(reason: 554 Service unavailable; Client host [smtp2.execulink.net] blocked using Barracuda Reputation; http://bbl.barracudacentral.com/q.cgi?ip 9.213.225.152)
From: Dave Fisher
Sent: Sunday, February 07, 2010 10:35 AM
Subject: Re: Kitfox-List: Radio Noise
Roger,
I common fault is using the chassis as a ground. Even though the chassic may be
grounded to the ground bar or to the battery you can still have issues.
All grounds should be at one point . Don't ever consider the chassis ground to
be perfect consistently.
Dave
no radio troubles here currently
----- Original Message -----
From: Roger McConnell
Sent: Sunday, February 07, 2010 9:23 AM
Subject: RE: Kitfox-List: Radio Noise
--------
Rotax Dealer, Ontario Canada
http://www.cfisher.com/
Awesome *New Forum *
http://rotaxaircraft.com/forum/
Realtime Kitfox movies to separate the internet chatter from the truth
http://www.youtube.com/profile_videos?user=kitfoxflyer
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=285328#285328
Message 3
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Paul,
Thank you for placing those two paragraphs at the end of your email. They
caught my attention and I'm glad they did. I've heard of Mark Levin, but
had no idea he was such a brilliant writer. I just may have to get his
book!
Rick Weiss
N39RW Series V Speedster, 912ULS
SkyStar S/N 1
Port Orange, FL
On Feb 7, 2010, at 11:19 PM, Paul Franz - Merlin GT wrote:
des.com>
>
> On Sun, February 7, 2010 6:23 am, Roger McConnell wrote:
>> Guy and Noel,
>>
>> Thanks for the advice. After old man winter eases up around here I will
>> check these out. I really think it's something to do with the ignition
>> system or a bad ground on a P-lead.
>
> That's a possibility, for sure. I'm certainly not a radio expert but fro
m my reading
> and personal experience, I'll put my money on a loose or corroded connec
tion at one of
> four places:
>
> 1) Radio power lead.
>
> 2) Radio ground wire.
>
> 3) Antenna ground connection to the ground plane.
>
> 4) Antenna cable connection especially at the end points of RG-58 coax.
>
> Be sure to inspect crimped connectors for 1) and 2) carefully. Any corro
sion at these
> connectors introduces capacitance and can act as an amplifier to introdu
ce ignition
> noise into the power side of the radio.
>
> My favored resource for help with this kind of problem is the Aeroelectr
ic list. If
> you are using the forum for this list (Kitfox), you can also read and po
st to the
> Aeroelectric forum or any other Matronics forum.
> --
> Paul A. Franz
> Registration/Aircraft - N14UW/Merlin GT
> Engine/Prop - Rotax 914/NSI CAP
> Bellevue WA
>
> "We the People of the United States, in Order to form a more perfect
> Union, establish Justice, insure domestic Tranquility, provide for
> the common defence, promote the general Welfare, and secure the
> Blessings of Liberty to ourselves and our Posterity, do ordain and
> establish this Constitution for the United States of America. ...
> Done ... the seventeenth day of September, in the year of our LORD
> one thousand seven hundred and eighty seven."
> -- George Washington and the Signers
>
> "The Modern Liberal believes in the supremacy of the state, thereby
> rejecting the principles of the Declaration and the order of the civil
> society, in whole or part. For the Modern Liberal, the individual's
> imperfection and personal pursuits impede the objective of a utopian
> state. In this, Modern Liberalism promotes what French historian Alexis
> de Tocqueville described as a soft tyranny, which becomes increasingly
> more oppressive, potentially leading to a hard tyranny (some form of
> totalitarianism). As the word 'liberal' is, in its classical meaning,
> the opposite of authoritarian, it is more accurate, therefore, to
> characterize the Modern Liberal as a Statist. ... The Statist ... knows
> that despite his successful usurpations, enough citizens are still
> skeptical and even distrustful of politicians and government that he
> cannot force his will all at once. Thus he marches in incremental
> steps, adjusting his pace as circumstances dictate. Today his pace is
> more rapid, for resistance has slowed. ... The Conservative does not
> despise government. He despises tyranny. This is precisely why the
> Conservative reveres the Constitution and insists on adherence to it.
> An 'effective' government that operates outside its constitutional
> limitations is a dangerous government. ... The Conservative is alarmed
> by the ascent of a soft tyranny.... He knows that liberty once lost is
> rarely recovered. He knows of the decline and eventual failure of past
> republics. And he knows that the best prescription for addressing
> society's real and perceived ailments is not to further empower an
> already enormous federal government beyond its constitutional limits,
> but to return to the founding principles. A free people living in a
> civil society, working in self-interested cooperation, and a government
> operating within the limits of its authority promote more prosperity,
> opportunity, and happiness for more people than any alternative.
> Conservatism is the antidote to tyranny precisely because its
> principles are the founding principles."
> -- author and radio talk-show host Mark Levin in his book "Liberty and
Tyranny"
>
>
========================
============
========================
============
========================
============
========================
============
>
>
Message 4
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| Subject: | Political Discussion |
Oh my. I apologize to the list for not picking this up. My email
software strips the signatures.
I don't want the list to think we will start tolerating political
discussion and I ask all to refrain from overt political expression.
With apologies to the First Amendment, knowing there are other, more
applicable, forums for political expression it's just not worth
splitting the list over it.
Thank you,
Guy Buchanan, Kitfox List Moderator
San Diego, CA
K-IV 1200 / 582-C / Warp / 400 hrs. and counting
>--
>Paul A. Franz
>Registration/Aircraft - N14UW/Merlin GT
>Engine/Prop - Rotax 914/NSI CAP
>Bellevue WA
>
>"We the People of the United States, in Order to form a more perfect
>Union, establish Justice, insure domestic Tranquility, provide for
>the common defence, promote the general Welfare, and secure the
>Blessings of Liberty to ourselves and our Posterity, do ordain and
>establish this Constitution for the United States of America. ...
>Done ... the seventeenth day of September, in the year of our LORD
>one thousand seven hundred and eighty seven."
>-- George Washington and the Signers
>
>"The Modern Liberal believes in the supremacy of the state, thereby
>rejecting the principles of the Declaration and the order of the civil
>society, in whole or part. For the Modern Liberal, the individual's
>imperfection and personal pursuits impede the objective of a utopian
>state. In this, Modern Liberalism promotes what French historian Alexis
>de Tocqueville described as a soft tyranny, which becomes increasingly
>more oppressive, potentially leading to a hard tyranny (some form of
>totalitarianism). As the word 'liberal' is, in its classical meaning,
>the opposite of authoritarian, it is more accurate, therefore, to
>characterize the Modern Liberal as a Statist. ... The Statist ... knows
>that despite his successful usurpations, enough citizens are still
>skeptical and even distrustful of politicians and government that he
>cannot force his will all at once. Thus he marches in incremental
>steps, adjusting his pace as circumstances dictate. Today his pace is
>more rapid, for resistance has slowed. ... The Conservative does not
>despise government. He despises tyranny. This is precisely why the
>Conservative reveres the Constitution and insists on adherence to it.
>An 'effective' government that operates outside its constitutional
>limitations is a dangerous government. ... The Conservative is alarmed
>by the ascent of a soft tyranny.... He knows that liberty once lost is
>rarely recovered. He knows of the decline and eventual failure of past
>republics. And he knows that the best prescription for addressing
>society's real and perceived ailments is not to further empower an
>already enormous federal government beyond its constitutional limits,
>but to return to the founding principles. A free people living in a
>civil society, working in self-interested cooperation, and a government
>operating within the limits of its authority promote more prosperity,
>opportunity, and happiness for more people than any alternative.
>Conservatism is the antidote to tyranny precisely because its
>principles are the founding principles."
>-- author and radio talk-show host Mark Levin in his book "Liberty
>and Tyranny"
>
>
Message 5
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Just to be sure... There should be a grounded shield on the P-Leads The
only time the P-Leads themselves should be grounded is to shut off the mags.
When the engine is in operation they should be adrift meaning they are
actually like little transmitter antennas. It is important they be
shielded.
Noel
From: owner-kitfox-list-server@matronics.com
[mailto:owner-kitfox-list-server@matronics.com] On Behalf Of Roger McConnell
Sent: February 7, 2010 10:53 AM
Subject: RE: Kitfox-List: Radio Noise
Guy and Noel,
Thanks for the advice. After old man winter eases up around here I will
check these out. I really think it's something to do with the ignition
system or a bad ground on a P-lead.
DO NOT ARCHIVE
Roger McConnell, Duncan, OK
Model 7 Trigear, Rotax 912uls
Flying sense Jan. 06
_____
http://www.matronics.com/Navigator?Kitfox-List
http://forums.matronics.com
http://www.matronics.com/contribution
Message 6
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| Subject: | Re: Political Discussion |
Guy, Where have you been? Paul has been including founders quotes and
political views after his message ever since I met him here on this site
about a year ago. They are always included as a post script. I agree I don't
want to see the list split. But if it does,.... I'm going with the faction
that includes Paul.
Pat Reilly
Mod 3 582 Rebuild
Rockford, IL
On Mon, Feb 8, 2010 at 10:59 AM, Guy Buchanan <bnn@nethere.com> wrote:
> Oh my. I apologize to the list for not picking this up. My email software
> strips the signatures.
>
> I don't want the list to think we will start tolerating political
> discussion and I ask all to refrain from overt political expression. With
> apologies to the First Amendment, knowing there are other, more applicable,
> forums for political expression it's just not worth splitting the list over
> it.
>
> Thank you,
>
> *Guy Buchanan, Kitfox List Moderator
> *San Diego, CA
> K-IV 1200 / 582-C / Warp / 400 hrs. and counting
>
>
> --
> Paul A. Franz
> Registration/Aircraft - N14UW/Merlin GT
> Engine/Prop - Rotax 914/NSI CAP
> Bellevue WA
>
> "We the People of the United States, in Order to form a more perfect
> Union, establish Justice, insure domestic Tranquility, provide for
> the common defence, promote the general Welfare, and secure the
> Blessings of Liberty to ourselves and our Posterity, do ordain and
> establish this Constitution for the United States of America. ...
> Done ... the seventeenth day of September, in the year of our LORD
> one thousand seven hundred and eighty seven."
> -- George Washington and the Signers
>
> "The Modern Liberal believes in the supremacy of the state, thereby
> rejecting the principles of the Declaration and the order of the civil
> society, in whole or part. For the Modern Liberal, the individual's
> imperfection and personal pursuits impede the objective of a utopian
> state. In this, Modern Liberalism promotes what French historian Alexis
> de Tocqueville described as a soft tyranny, which becomes increasingly
> more oppressive, potentially leading to a hard tyranny (some form of
> totalitarianism). As the word 'liberal' is, in its classical meaning,
> the opposite of authoritarian, it is more accurate, therefore, to
> characterize the Modern Liberal as a Statist. ... The Statist ... knows
> that despite his successful usurpations, enough citizens are still
> skeptical and even distrustful of politicians and government that he
> cannot force his will all at once. Thus he marches in incremental
> steps, adjusting his pace as circumstances dictate. Today his pace is
> more rapid, for resistance has slowed. ... The Conservative does not
> despise government. He despises tyranny. This is precisely why the
> Conservative reveres the Constitution and insists on adherence to it.
> An 'effective' government that operates outside its constitutional
> limitations is a dangerous government. ... The Conservative is alarmed
> by the ascent of a soft tyranny.... He knows that liberty once lost is
> rarely recovered. He knows of the decline and eventual failure of past
> republics. And he knows that the best prescription for addressing
> society's real and perceived ailments is not to further empower an
> already enormous federal government beyond its constitutional limits,
> but to return to the founding principles. A free people living in a
> civil society, working in self-interested cooperation, and a government
> operating within the limits of its authority promote more prosperity,
> opportunity, and happiness for more people than any alternative.
> Conservatism is the antidote to tyranny precisely because its
> principles are the founding principles."
> -- author and radio talk-show host Mark Levin in his book "Liberty and
> Tyranny"
>
>
> Kitfox-List Email Forum -
> http://www.matronics.com/Navigator?Kitfox-List
> - MATRONICS WEB FORUMS -
> http://forums.matronics.com
> - List Contribution Web Site -
> -Matt Dralle, List Admin.
> http://www.matronics.com/contribution
>
> *
>
> *
>
>
--
Pat Reilly
Mod 3 582 Rebuild
Rockford,IL
Message 7
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In the interest of opening a can of worms, Noel........shielding
grounded on one end or both? (ducking) : )
Lynn Matteson
Kitfox IV Speedster, taildragger
Jabiru 2200, #2062, 849.1 hrs
Countdown to 1000 hrs~151 to go
Sensenich 62"x46" Wood (summer)
Sensenich 55.5" x 46" Wood (winter)
Electroair direct-fire ignition system
Rotec TBI-40 injection
Status: flying (and learning)
do not archive
On Feb 8, 2010, at 4:58 PM, Noel Loveys wrote:
> Just to be sure... There should be a grounded shield on the P-
> Leads The only time the P-Leads themselves should be grounded is to
> shut off the mags. When the engine is in operation they should be
> adrift meaning they are actually like little transmitter antennas.
> It is important they be shielded.
>
>
> Noel
>
>
> From: owner-kitfox-list-server@matronics.com [mailto:owner-kitfox-
> list-server@matronics.com] On Behalf Of Roger McConnell
> Sent: February 7, 2010 10:53 AM
> To: kitfox-list@matronics.com
> Subject: RE: Kitfox-List: Radio Noise
>
>
> Guy and Noel,
>
> Thanks for the advice. After old man winter eases up around here I
> will check these out. I really think its something to do with the
> ignition system or a bad ground on a P-lead.
>
> DO NOT ARCHIVE
>
>
> Roger McConnell, Duncan, OK
>
> Model 7 Trigear, Rotax 912uls
>
> Flying sense Jan. 06
>
>
> http://www.matronics.com/Navigator?Kitfox-List http://
> forums.matronics.com http://www.matronics.com/contribution http://
> www.matronics.com/Navigator?Kitfox-Listhttp://
> forums.matronics.comhttp://www.matronics.com/contribution
> ============================================================ _-
> ============================================================ _-
> contribution_-
> ===========================================================
Message 8
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| Subject: | Re: Kitfox-List Digest: Static port location |
So why not just post it right here?
--------
James
Kitfox 3 / 582 / GSC prop
The ink is still drying on my new certificate
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=285505#285505
Message 9
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| Subject: | Re: Political Discussion |
At 02:31 PM 2/8/2010, you wrote:
>Guy, Where have you been? Paul has been including founders quotes
>and political views after his message ever since I met him here on
>this site about a year ago. They are always included as a post
>script. I agree I don't want to see the list split. But if it
>does,.... I'm going with the faction that includes Paul.
All,
I replied to Pat off-line. Again I apologize if I missed
some similar previous signatures, it seems my software hides them for
some reason. Please do not think I am picking on Paul or his views.
This signature was way longer and way more political than anything I
remember seeing previously. Founder's quotes I can handle. I can't
handle political diatribes of any flavor. Again, if you want to talk
politics, either directly or indirectly, please take it off-line.
Thank you,
Guy Buchanan, Kitfox List Moderator
San Diego, CA
K-IV 1200 / 582-C / Warp / 400 hrs. and counting
Message 10
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Wow, lots of food for thought, thanks fellows. I will for sure check my
radio power and ground connects and the RG-58 connection.
DO NOT ARCHIVE
Roger McConnell, Duncan, OK
Model 7 Trigear, Rotax 912uls
Flying sense Jan. 06
-----Original Message-----
From: owner-kitfox-list-server@matronics.com
[mailto:owner-kitfox-list-server@matronics.com] On Behalf Of Paul Franz -
Merlin GT
Sent: Sunday, February 07, 2010 10:19 PM
Subject: RE: Kitfox-List: Radio Noise
<paul@eucleides.com>
On Sun, February 7, 2010 6:23 am, Roger McConnell wrote:
> Guy and Noel,
>
> Thanks for the advice. After old man winter eases up around here I will
> check these out. I really think it's something to do with the ignition
> system or a bad ground on a P-lead.
That's a possibility, for sure. I'm certainly not a radio expert but from my
reading
and personal experience, I'll put my money on a loose or corroded connection
at one of
four places:
1) Radio power lead.
2) Radio ground wire.
3) Antenna ground connection to the ground plane.
4) Antenna cable connection especially at the end points of RG-58 coax.
Be sure to inspect crimped connectors for 1) and 2) carefully. Any corrosion
at these
connectors introduces capacitance and can act as an amplifier to introduce
ignition
noise into the power side of the radio.
My favored resource for help with this kind of problem is the Aeroelectric
list. If
you are using the forum for this list (Kitfox), you can also read and post
to the
Aeroelectric forum or any other Matronics forum.
--
Paul A. Franz
Registration/Aircraft - N14UW/Merlin GT
Engine/Prop - Rotax 914/NSI CAP
Bellevue WA
Message 11
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On Mon, February 8, 2010 3:08 pm, Lynn Matteson wrote:
>
> In the interest of opening a can of worms, Noel........shielding
> grounded on one end or both? (ducking) : )
I've a lot of experience with RG-58 cabling with ethernet networks. The proper
way is
a ground on one end and the last connection on the other should be a T with a 50
ohm
terminator. With ethernet, having the terminator on one or both ends seems sufficient,
i.e., no grounds at all. I believe you should ground only one end of the shielded
coax
when used as an antenna lead. I don't know if a terminator should be used on the
other
or not though.
--
Paul A. Franz
Registration/Aircraft - N14UW/Merlin GT
Engine/Prop - Rotax 914/NSI CAP
Bellevue WA
Per list moderators' directive my taglines will from here on out will be more limited
in scope and volume. Here's a couple though.
"The cause of America is in a great measure the cause of all mankind."
-- Thomas Paine, Common Sense, 1776
There is no such thing as society: there are individual men and women,
and there are families.
-- Margaret Thatcher
Message 12
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Shielding... grounded only to the end closest to the source.. If you ground
the shield at both ends what you have done is made an unbalanced conductor
like a piece of coax. As with coax there is a capacitance in the line when
it is grounded at both ends. This is why they say to only ground at one end
and that end usually has the best ground at the source end.
Years ago I was involved in a volunteer position at the local cable station.
We did several programs which were all recorded on 1/2" Beta video machines
and then edited down to the program length. Our editing suite had a problem
that after a video dub of five minutes we would get a glitch in our video.
The suite was in a room with a faraday screen that was connected to a close
to perfect ground ( a 4X8'piece of steel buried ten feet below the surface
of the ground... The steel had 20'radials attached to it) Sony was so
upset over this they actually sent technicians from Japan to check out our
installation. After a week of trying everything they could think of one of
the technicians attached an additional ground between the frame of the video
board and one of the audio boards and the glitch stopped. No one knows why
since both boards were properly grounded. The bond between the two boards
worked so well that future models of the Beta editing suite had the extra
ground included.
When it comes to electronics there are rules and just like everything else
there are exceptions that make the rules.
Noel
-----Original Message-----
From: owner-kitfox-list-server@matronics.com
[mailto:owner-kitfox-list-server@matronics.com] On Behalf Of Lynn Matteson
Sent: February 8, 2010 7:38 PM
Subject: Re: Kitfox-List: Radio Noise
In the interest of opening a can of worms, Noel........shielding
grounded on one end or both? (ducking) : )
Lynn Matteson
Kitfox IV Speedster, taildragger
Jabiru 2200, #2062, 849.1 hrs
Countdown to 1000 hrs~151 to go
Sensenich 62"x46" Wood (summer)
Sensenich 55.5" x 46" Wood (winter)
Electroair direct-fire ignition system
Rotec TBI-40 injection
Status: flying (and learning)
do not archive
On Feb 8, 2010, at 4:58 PM, Noel Loveys wrote:
> Just to be sure... There should be a grounded shield on the P-
> Leads The only time the P-Leads themselves should be grounded is to
> shut off the mags. When the engine is in operation they should be
> adrift meaning they are actually like little transmitter antennas.
> It is important they be shielded.
>
>
> Noel
>
>
> From: owner-kitfox-list-server@matronics.com [mailto:owner-kitfox-
> list-server@matronics.com] On Behalf Of Roger McConnell
> Sent: February 7, 2010 10:53 AM
> To: kitfox-list@matronics.com
> Subject: RE: Kitfox-List: Radio Noise
>
>
> Guy and Noel,
>
> Thanks for the advice. After old man winter eases up around here I
> will check these out. I really think it's something to do with the
> ignition system or a bad ground on a P-lead.
>
> DO NOT ARCHIVE
>
>
> Roger McConnell, Duncan, OK
>
> Model 7 Trigear, Rotax 912uls
>
> Flying sense Jan. 06
>
>
> http://www.matronics.com/Navigator?Kitfox-List http://
> forums.matronics.com http://www.matronics.com/contribution http://
> www.matronics.com/Navigator?Kitfox-Listhttp://
> forums.matronics.comhttp://www.matronics.com/contribution
> ============================================================ _-
> ============================================================ _-
> contribution_-
> ===========================================================
Message 13
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Antennae are a bit different they are unbalanced conductors where the
shielding carries up to half the power. Antennae should be grounded at both
ends. On a vertical antenna the shield should have a ground plane equal to
at least 1/4 the wave length being transmitted. The groundplane is located
at the base of the vertical radiator and 90 deg to it. On transmitting
coaxes generally the centre radiator is not in any way grounded... Note the
word "Generally". There are some antennas that may use a resistor between
the radiator and the shield.
Noel
-----Original Message-----
From: owner-kitfox-list-server@matronics.com
[mailto:owner-kitfox-list-server@matronics.com] On Behalf Of Paul Franz -
Merlin GT
Sent: February 8, 2010 10:20 PM
Subject: Re: Kitfox-List: Radio Noise
<paul@eucleides.com>
On Mon, February 8, 2010 3:08 pm, Lynn Matteson wrote:
>
> In the interest of opening a can of worms, Noel........shielding
> grounded on one end or both? (ducking) : )
I've a lot of experience with RG-58 cabling with ethernet networks. The
proper way is
a ground on one end and the last connection on the other should be a T with
a 50 ohm
terminator. With ethernet, having the terminator on one or both ends seems
sufficient,
i.e., no grounds at all. I believe you should ground only one end of the
shielded coax
when used as an antenna lead. I don't know if a terminator should be used on
the other
or not though.
--
Paul A. Franz
Registration/Aircraft - N14UW/Merlin GT
Engine/Prop - Rotax 914/NSI CAP
Bellevue WA
Per list moderators' directive my taglines will from here on out will be
more limited
in scope and volume. Here's a couple though.
"The cause of America is in a great measure the cause of all mankind."
-- Thomas Paine, Common Sense, 1776
There is no such thing as society: there are individual men and women,
and there are families.
-- Margaret Thatcher
Message 14
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On Mon, February 8, 2010 7:02 pm, Noel Loveys wrote:
>
> Antennae are a bit different they are unbalanced conductors where the
> shielding carries up to half the power. Antennae should be grounded at both
> ends.
Noel, are you certain of that? I am looking at the installation guide for a Narco
VOR/COM given to me from the Paine Field Radio shop and it says to ground the Com
coax
on one end only at the radio end of the shielding of the coax. I seem to recall
reading the same advice on the AeroElectric list. I'm not speaking from Engineering
knowledge just regurgitating so I definitely won't feel hurt if I'm corrected on
this.
--
Paul A. Franz
Registration/Aircraft - N14UW/Merlin GT
Engine/Prop - Rotax 914/NSI CAP
Bellevue WA
"It is an object of vast magnitude that systems of education should
be adopted and pursued which may not only diffuse a knowledge of the
sciences but may implant in the minds of the American youth the
principles of virtue and of liberty and inspire them with just and
liberal ideas of government and with an inviolable attachment to
their own country."
-- Noah Webster, On Education of Youth in America, 1790
"Absolute power corrupts even when exercised for humane purposes. The
benevolent despot who sees himself as a shepherd of the people still
demands from others the submissiveness of sheep. The taint inherent in
absolute power is not its inhumanity but its anti-humanity."
-- American author Eric Hoffer (1902-1983)
"That [tyrannical government] power is absolute, minute, regular,
provident and mild. It would be like the authority of a parent if,
like that authority, its object was to prepare men for manhood; but
it seeks, on the contrary, to keep them in perpetual childhood: it
is well content that the people should rejoice, provided they think
of nothing but rejoicing. For their happiness such a government
willingly labors, but it chooses to be the sole agent and the only
arbiter of that happiness; it provides for their security, foresees
and supplies their necessities, facilitates their pleasures, manages
their principal concerns, directs their industry, regulates the
descent of property, and subdivides their inheritances: what
remains, but to spare them all the care of thinking and all the
trouble of living?"
-- French historian Alexis de Tocqueville (1805-1859)
Message 15
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This all boils down to my favorite thought:
If it don't work, try something else.
Lynn Matteson
Kitfox IV Speedster, taildragger
Jabiru 2200, #2062, 849.1 hrs
Countdown to 1000 hrs~151 to go
Sensenich 62"x46" Wood (summer)
Sensenich 55.5" x 46" Wood (winter)
Electroair direct-fire ignition system
Rotec TBI-40 injection
Status: flying (and learning)
On Feb 8, 2010, at 9:21 PM, Noel Loveys wrote:
>
> When it comes to electronics there are rules and just like
> everything else
> there are exceptions that make the rules.
>
> Noel
>
>
Message 16
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| Subject: | Intermittent Ignition Issue |
Listers,
I am out of ideas. I have a Model IV with a 582 and Ducati ignition.
About 50% of the time my aircraft fails ground check on one side of my ig
nition. I have checked for every loose connection I can think of. How fr
equently have the brushes on the flywheel failed? Could they be intermitt
ent? I have replaced the DCI I thought was the failed unit but I'm not su
re how likely it is for a DCI to fire intermittently.
Does anyone have any good suggestions? I've checked everything I can thin
k of...
Thanks for the help,
Rique Gwin
Kitfox Model IV Classic
582 Grey
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