X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Mon, 28 Oct 2013 07:44:56 -0400 Message-ID: X-Original-Return-Path: Received: from pit-mailgw-05.smarsh.com ([199.47.168.64] verified) by logan.com (CommuniGate Pro SMTP 6.0.7) with ESMTPS id 6566716 for lml@lancaironline.net; Sun, 27 Oct 2013 20:13:30 -0400 Received-SPF: none receiver=logan.com; client-ip=199.47.168.64; envelope-from=ghp@trustedwealthadvisors.com Received: from [10.6.1.120] (helo=pit-dlpsvc-01.smarshinc.com) by pit-mailgw-05.smarsh.com with esmtp (Smarsh SMTP 4.80.1) (envelope-from ) id 1VaaS0-0007HG-Am; Sun, 27 Oct 2013 20:12:56 -0400 Received: from [10.6.0.110] (helo=cambridge.smarsh.com)by pit-obdlp-01.smarsh.com with esmtps (TLSv1:DHE-RSA-AES256-SHA:256)(Smarsh SMTP 4.80.1)(envelope-from )id 1VaaQX-00083L-G1; Sun, 27 Oct 2013 20:11:25 -0400 Received: from ([173.163.46.146]) by cambridge.smarsh.com (IceWarp 10.4.4) with ASMTP (SSL) id NKN29222; Sun, 27 Oct 2013 20:11:22 -0400 From: "Gordon Porter" X-Original-To: , References: <2A14E6258A8534418F5498D73CCA51EF2257CA51CC@P3PW5EX1MB14.EX1.SECURESERVER.NET> In-Reply-To: <2A14E6258A8534418F5498D73CCA51EF2257CA51CC@P3PW5EX1MB14.EX1.SECURESERVER.NET> Subject: RE: [LML] Noisy COM on low end freqs only....? X-Original-Date: Sun, 27 Oct 2013 20:11:19 -0400 X-Original-Message-ID: <002a01ced372$3b336700$b19a3500$@com> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_002B_01CED350.B421C700" X-Mailer: Microsoft Office Outlook 12.0 Thread-Index: Ac7RaUcpVLdcKI2RTiqbFK8SFmFriwAe+MgwAGL9NhA= Content-Language: en-us X-Smarsh-Out: 1 X-Smarsh-Out-CID: cid14628smarsh X-Smarsh-PID: 1VaaQX-00083L-G1 ckx-imap-uid: 3638 ckx-imap-isUid: YES ckx-imap-seen: NO ckx-imap-answered: NO ckx-imap-deleted: NO ckx-imap-flagged: NO ckx-imap-draft: NO This is a multi-part message in MIME format. ------=_NextPart_000_002B_01CED350.B421C700 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Thanks, Pete. =20 This weekend I found that my headset jacks, that I moved to the panel at= the last minute, were not insulated. I was hopeful I had found the iss= ue. Not. Next is the audio jack in and other misc. items that contact = the panel, and running a dedicated ground line to my antenna ground plan= e. A local A&P suggested that I ground the panel itself as well. Frust= rating. =20 I was able to isolate the squelch noise to the "EFIS-trim:" circuit whil= e idling today. Not sure what that means, but will reach out to Aerotro= nics, who did my panel, this week. =20 Will keep the group posted.. =20 Gordon =20 =20 =20 Gordon H. Porter Managing Partner Trusted Wealth Advisors, LLP Registered Principal, Cambridge Investment Research, Inc. =20 800-290-2632 717-757-4908 fax 717-843-0180 =20 GHP@TrustedWealthAdvisors.= com =20 Securities offered through Cambridge Investment Research, Inc.. Member F= INRA/SIPC. Advisory Services offered through Cambridge Investment Resear= ch Advisors, Inc., a Registered Investment Advisor. Tax services are off= ered by Trusted Wealth Advisors LLP. Trusted Wealth Advisors and the Cam= bridge Investment Research companies are unaffiliated entities. Trading instructions sent via e-mail may not be honored. Please call ou= r office, or Cambridge Investment Research trading desk at 800-756-8115 , for all buy/sell orders. Please be advised that communications regard= ing trades in your account are for informational purposes only. You sho= uld continue to rely on confirmations and statements received from the c= ustodian(s) of your assets. The text of this communication is confident= ial, and use by any person who is not the intended recipient is prohibit= ed. Any person who receives this communication in error is requested to= immediately destroy the text of this communication without copying or f= urther dissemination. Your cooperation is appreciated. =20 From: pete@leapfrogventures.com [mailto:pete@leapfrogventures.com]=20 Sent: Friday, October 25, 2013 8:54 PM To: lml@lancaironline.net; ghp@trustedwealthadvisors.com Subject: RE: [LML] Noisy COM on low end freqs only....? =20 I had similar problems with my ES comm. In my case I found two causes. = The first was the aux audio input jack for my comm panel. It was mount= ed on the aluminum dash, which created a ground loop as the barrel of th= e connector was then connected by both a wire and the panel. Disconnect= ing the jack eliminated the hum. Note that the hum was there even when = the aux jack was not enabled =E2=80=93 just its presence created a groun= d loop. =20 The second issue was noise emanating from my LED position lights. This = noise only affected the lower comm frequencies, while the aux jack loop = created a buzz all of the time. You can source these kinds of problems = by opening the fuses one by one until the problem goes away. =20 =20 Pete =20 From: YahooMail [mailto:arrow54t@yahoo.com]=20 Sent: Thursday, October 24, 2013 6:06 AM To: lml@lancaironline.net Subject: Re: [LML] Noisy COM on low end freqs only....? =20 Gordon, I had very similar experience with my ES. I tried the alternator filter= capacitor idea with no luck too. I could eliminate the noise by turnin= g off the alternator field. Turned out to be a ground loop due to the a= luminum headphone mounting jack plates for the rear seat passengers. I = installed plastic washers with a flange so that the jack bodies wouldn't= touch the metal plate. Aircraft Spruce sells them just for this purpos= e. Originally I had plastic washers that didn't have the flange that ke= eps the jacks in the center of the hole. No more whining in my plane ex= cept from some passengers when there is turbulence! =20 Hope this helps, Mike Salzman 2005 LNCE Fairfield, CA Sent from my iPad On Oct 21, 2013, at 7:37, "Gordon Porter" wrote: Well, I have been flying my Lancair ES for 90 hours and loving it. Kno= cking off the last of the minor squawks. One that has me perplexed is a= very staticy COM background noise: =20 Get it on both radios - a G530 and an SL30, on different antennae SL 30 is on an exterior Comant 121; G530 is on a bonded in AAE in vertic= al My transmissions are heard fine I actually here incoming transmissions when it is staticy fairly well, = most of the time The WEIRD part is it is 100% reproducible on 118.xx, 119.xx and 120.xx f= reqs only. Rest of freq spectrum is crystal clear with good range =20 I thought I had it narrowed down to the Primary ALT since at 8-900 RPM I= could switch the static off and on with the field switch. So, I put on= e of those big capacitors (from B&C) on the PRIM ALT. No improvement at= higher RPMs. Noise is the same with either alternator. =20 Any ideas? The lower freqs only has to be a clue, I just don't know wha= t it means!! =20 Thanks in advance for any ideas or direction. =20 Gordon Lancair ES N144GP IO-550 =20 =20 Gordon H. Porter Managing Partner Trusted Wealth Advisors, LLP Registered Principal, Cambridge Investment Research, Inc. =20 800-290-2632 717-757-4908 fax 717-843-0180 =20 GHP@TrustedWealthAdvisors.com =20 =20 Securities offered through Cambridge Investment Research, Inc.. Member F= INRA/SIPC. Advisory Services offered through Cambridge Investment Resear= ch Advisors, Inc., a Registered Investment Advisor. Tax services are off= ered by Trusted Wealth Advisors LLP. Trusted Wealth Advisors and the Cam= bridge Investment Research companies are unaffiliated entities. Trading instructions sent via e-mail may not be honored. Please call ou= r office, or Cambridge Investment Research trading desk at 800-756-8115 , for all buy/sell orders. Please be advised that communications regard= ing trades in your account are for informational purposes only. You sho= uld continue to rely on confirmations and statements received from the c= ustodian(s) of your assets. The text of this communication is confident= ial, and use by any person who is not the intended recipient is prohibit= ed. Any person who receives this communication in error is requested to= immediately destroy the text of this communication without copying or f= urther dissemination. Your cooperation is appreciated. =20 ------=_NextPart_000_002B_01CED350.B421C700 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable

Thanks, Pete.

 

This weekend I found that my hea= dset jacks, that I moved to the panel at the last minute, were not insul= ated.=C2=A0 I was hopeful I had found the issue.=C2=A0 Not.=C2=A0 Next i= s the audio jack in and other misc. items that contact the panel, and ru= nning a dedicated ground line to my antenna ground plane.=C2=A0 A local = A&P suggested that I ground the panel itself as well.=C2=A0 Frustrat= ing.

 

I was able to isolate the squelch noise to the "EFIS-tr= im:" circuit while idling today.=C2=A0 Not sure what that means, bu= t will reach out to Aerotronics, who did my panel, this week.=

 = ;

Wil= l keep the group posted..

 

Gordon

 

 <= /p>

 <= /span>

Gordon H. Porter

Managing Partner

Tr= usted Wealth Advisors, LLP

Registe= red Principal, Cambridge Investment Research, Inc.

=

 

800-290-26= 32  717-757-4908  fax 717-843-0180

 <= o:p>

GHP@TrustedWealthAdvisor= s.com<= /p>

 <= /span>

Securities offe= red through Cambridge Investment Research, Inc.. Member FINRA/SIPC. Advi= sory Services offered through Cambridge Investment Research Advisors, In= c., a Registered Investment Advisor. Tax services are offered by Trusted= Wealth Advisors LLP. Trusted Wealth Advisors and the Cambridge Investme= nt Research companies are unaffiliated entities.

= Tradi= ng instructions sent via e-mail may not be honored.  Please call ou= r office, or Cambridge Investment Research trading desk at 800-756-8115<= /span>

, for all buy/sell orders.  Please be advised tha= t communications regarding trades in your account are for informational = purposes only.  You should continue to rely on confirmations and st= atements received from the custodian(s) of your assets.  The text o= f this communication is confidential, and use by any person who is not t= he intended recipient is prohibited.  Any person who receives this = communication in error is requested to immediately destroy the text of t= his communication without copying or further dissemination.  Your c= ooperation is appreciated.

 

From: pete@leapfrogventures.com [mailto:p= ete@leapfrogventures.com]
Sent: Friday, October 25, 2013 8:54= PM
To: lml@lancaironline.net; ghp@trustedwealthadvisors.comSubject: RE: [LML] Noisy COM on low end freqs only....?

 

I had similar problems wi= th my ES comm.  In my case I found two causes.  The first was = the aux audio input jack for my comm panel.  It was mounted on the = aluminum dash, which created a ground loop as the barrel of the connecto= r was then connected by both a wire and the panel.  Disconnecting t= he jack eliminated the hum.  Note that the hum was there even when = the aux jack was not enabled =E2=80=93 just its presence created a groun= d loop.

 

The second issue was noise emanating from my LED position= lights.  This noise only affected the lower comm frequencies, whil= e the aux jack loop created a buzz all of the time.  You can source= these kinds of problems by opening the fuses one by one until the probl= em goes away. 

 

Pete

 

=

From: YahooMail [mailto:arrow54t@yahoo.com]
Sent:= Thursday, October 24, 2013 6:06 AM
To: lml@lancaironline.net
Subject: Re: [LML= ] Noisy COM on low end freqs only....?

=

 

Gord= on,

I had very similar exp= erience with my ES.  I tried the alternator filter capacitor idea w= ith no luck too.  I could eliminate the noise by turning off the al= ternator field.  Turned out to be a ground loop due to the aluminum= headphone mounting jack plates for the rear seat passengers.  I in= stalled plastic washers with a flange so that the jack bodies wouldn't t= ouch the metal plate.  Aircraft Spruce sells them just for this pur= pose.  Originally I had plastic washers that didn't have the flange= that keeps the jacks in the center of the hole.  No more whining i= n my plane except from some passengers when there is turbulence!

 

<= p class=3DMsoNormal>Hope this helps,

Mike Salzman

200= 5 LNCE

Fairfield, CA
Sent from my iPad


On Oct 21, 2013, at 7:37, "Gordon Porter= " <ghp@trustedw= ealthadvisors.com> wrote:

Well, I have been flying = my Lancair  ES for 90 hours and loving it.  Knocking off the l= ast of the minor squawks.  One that has me perplexed is a very stat= icy COM background noise:

 

Get it on both radios - a G530 and an SL= 30, on different antennae

SL 30 is on an exterior Comant 121; G530 is on a bonded in AAE i= n vertical

My tran= smissions are heard fine

I actually here incoming transmissions  when it is staticy f= airly well, most of the time

The WEIRD = part is it is 100% reproducible on 118.xx, 119.xx and 120.xx freqs only.=   Rest of freq spectrum is crystal clear with good range

 

I thought I had it narrowe= d down to the Primary ALT since at 8-900 RPM I could switch the static o= ff and on with the field switch.  So, I put one of those big capaci= tors (from B&C) on the PRIM ALT.  No improvement at higher RPMs= =2E  Noise is the same with either alternator.

 

Any ideas?  The lower freqs= only has to be a clue, I just don't know what it means!!

 

Thanks in advance for any = ideas or direction.

 

Gordon

Lancair ES N144GP
IO-550<= o:p>

 

 

Gordon H. Porter

Ma= naging Partner

Trusted Wealth Advisors, LLP

Registered Principal, Cambridge Investment Research,= Inc.

 

800-290-263= 2  717-757-4908  fax 717-843-0180

 

GHP@TrustedWealthAdvisors.com=

 

Securities offered through Cambridge Investment Research, Inc.. M= ember FINRA/SIPC. Advisory Services offered through Cambridge Investment= Research Advisors, Inc., a Registered Investment Advisor. Tax services = are offered by Trusted Wealth Advisors LLP. Trusted Wealth Advisors and = the Cambridge Investment Research companies are unaffiliated entities.

Trading instructions sent via e-mail may not be ho= nored.  Please call our office, or Cambridge Investment Research tr= ading desk at 800-756-8115

, for all buy/sell ord= ers.  Please be advised that communications regarding trades in you= r account are for informational purposes only.  You should continue= to rely on confirmations and statements received from the custodian(s) = of your assets.  The text of this communication is confidential, an= d use by any person who is not the intended recipient is prohibited.&nbs= p; Any person who receives this communication in error is requested to i= mmediately destroy the text of this communication without copying or fur= ther dissemination.  Your cooperation is appreciated.

 

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