X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Mon, 28 Oct 2013 11:32:37 -0400 Message-ID: X-Original-Return-Path: Received: from nk11p08mm-asmtp002.mac.com ([17.158.58.247] verified) by logan.com (CommuniGate Pro SMTP 6.0.7) with ESMTP id 6567118 for lml@lancaironline.net; Mon, 28 Oct 2013 09:09:12 -0400 Received-SPF: pass receiver=logan.com; client-ip=17.158.58.247; envelope-from=gw5@me.com Received: from [10.0.1.68] (cpe-071-077-249-052.ec.res.rr.com [71.77.249.52]) by nk11p08mm-asmtp002.mac.com (Oracle Communications Messaging Server 7u4-27.08(7.0.4.27.7) 64bit (built Aug 22 2013)) with ESMTPSA id <0MVD009E8R69QM40@nk11p08mm-asmtp002.mac.com> for lml@lancaironline.net; Mon, 28 Oct 2013 13:08:37 +0000 (GMT) X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:5.10.8794,1.0.431,0.0.0000 definitions=2013-10-28_01:2013-10-28,2013-10-27,1970-01-01 signatures=0 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 spamscore=0 suspectscore=2 phishscore=0 adultscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=7.0.1-1308280000 definitions=main-1310280077 From: George Wehrung Content-type: multipart/alternative; boundary="Apple-Mail=_A13BC6A2-84D2-4039-8448-6D87C4837CC5" X-Original-Message-id: <9A3714F1-172B-415B-80A8-16D6FF7B8B5F@me.com> MIME-version: 1.0 (Mac OS X Mail 7.0 \(1816\)) Subject: Re: [LML] Re: Noisy COM on low end freqs only....? X-Original-Date: Mon, 28 Oct 2013 09:08:40 -0400 References: X-Original-To: Lancair Mailing List In-reply-to: X-Mailer: Apple Mail (2.1816) --Apple-Mail=_A13BC6A2-84D2-4039-8448-6D87C4837CC5 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=windows-1252 I found yesterday that with my wife using the Pilot BluLink (blue tooth = for her iPhone to Bose X headset) that the ICS and comms sounded = horrible. =20 Once she turned it off, problems went away. Just a datapoint. Don=92t = know if anyone else has had this as well. I may have to upgrade her to = the A20. On Oct 28, 2013, at 7:44 AM, Gordon Porter = wrote: > 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 = issue. 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 plane. A local A&P suggested that I ground the panel itself as = well. Frustrating. > =20 > I was able to isolate the squelch noise to the "EFIS-trim:" circuit = while idling today. Not sure what that means, but will reach out to = Aerotronics, 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 = 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. >=20 > Trading instructions sent via e-mail may not be honored. Please call = our office, or Cambridge Investment Research trading desk at = 800-756-8115 > , for all buy/sell orders. Please be advised that communications = regarding trades in your 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, and use by any person who is not the intended recipient is = prohibited. Any person who receives this communication in error is = requested to immediately destroy the text of this communication without = copying or further 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 mounted on the aluminum dash, which created a ground loop as the = barrel of the connector was then connected by both a wire and the panel. = Disconnecting the jack eliminated the hum. Note that the hum was there = even when the aux jack was not enabled =96 just its presence created a = ground 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 = turning off the alternator field. Turned out to be a ground loop due to = the aluminum 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 purpose. Originally I had plastic washers that didn't have the = flange that keeps the jacks in the center of the hole. No more whining = in my plane except from some passengers when there is turbulence! > =20 > Hope this helps, > Mike Salzman > 2005 LNCE > Fairfield, CA >=20 > Sent from my iPad >=20 > On Oct 21, 2013, at 7:37, "Gordon Porter" = wrote: >=20 > Well, I have been flying my Lancair ES for 90 hours and loving it. = Knocking 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 >=20 >=20 > SL 30 is on an exterior Comant 121; G530 is on a bonded in AAE in = vertical >=20 >=20 > My transmissions are heard fine >=20 >=20 > I actually here incoming transmissions when it is staticy fairly = well, most of the time >=20 >=20 > 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 > =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 = one 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 = what 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 > Securities offered through Cambridge Investment Research, Inc.. Member = 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. >=20 > Trading instructions sent via e-mail may not be honored. Please call = our office, or Cambridge Investment Research trading desk at = 800-756-8115 > , for all buy/sell orders. Please be advised that communications = regarding trades in your 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, and use by any person who is not the intended recipient is = prohibited. Any person who receives this communication in error is = requested to immediately destroy the text of this communication without = copying or further dissemination. Your cooperation is appreciated. --Apple-Mail=_A13BC6A2-84D2-4039-8448-6D87C4837CC5 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=windows-1252 I = found yesterday that with my wife using the Pilot BluLink (blue tooth = for her iPhone to Bose X headset) that the ICS and comms sounded = horrible.  

Once she turned it off, problems = went away.  Just a datapoint.  Don=92t know if anyone else has = had this as well.  I may have to upgrade her to the = A20.




= On Oct 28, 2013, at 7:44 AM, Gordon Porter <ghp@trustedwealthadvisors.co= m> wrote:

Thanks, Pete.
 
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 issue.  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 plane.  A local A&P suggested = that I ground the panel itself as well.  = Frustrating.
 
I was = able to isolate the squelch noise to the "EFIS-trim:" circuit while = idling today.  Not sure what that means, but will reach out to = Aerotronics, who did my panel, this week.
 
Will keep the group = posted..
 
Gordon
 
 
 
Gordon H. = Porter
Managing Partner
Trusted Wealth Advisors, LLP
Registered Principal, Cambridge = Investment Research, Inc.
 
800-290-2632  717-757-4908  fax = 717-843-0180
 
 

Securities offered through Cambridge = Investment Research, Inc.. Member 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 honored.  Please call our office, or Cambridge Investment = Research trading desk at 800-756-8115
, for all buy/sell orders.  = Please be advised that communications regarding trades in your 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, and use by = any person who is not the intended recipient is prohibited.  Any = person who receives this communication in error is requested to = immediately destroy the text of this communication without copying or = further dissemination.  Your cooperation is = appreciated.
 
From: pete@leapfrogventures.com [mailto:pete@leapfrogventures.com] 
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....?
 
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 mounted on the aluminum = dash, which created a ground loop as the barrel of the connector was = then connected by both a wire and the panel.  Disconnecting the = jack eliminated the hum.  Note that the hum was there even when the = aux jack was not enabled =96 just its presence created a ground = loop.
 
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. 
 
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....?
 
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 turning off the alternator field.  Turned out to be a = ground loop due to the aluminum 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 purpose.  Originally I had plastic = washers that didn't have the flange that keeps the jacks in the center = of the hole.  No more whining in my plane except from some = passengers when there is turbulence!
 
Hope this helps,
Mike Salzman
2005 LNCE
Fairfield, CA

Sent from my = iPad


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

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

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 = vertical

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 freqs only.  Rest of freq = spectrum is crystal clear with good range
 
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 one of those big = capacitors (from B&C) on the PRIM ALT.  No improvement at = higher RPMs.  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
 
 
Gordon H. = Porter
Managing = Partner
Trusted Wealth = Advisors, LLP
Registered = Principal, Cambridge Investment Research, = Inc.
 
800-290-2632  = 717-757-4908  fax 717-843-0180
 
 

Securities offered through Cambridge Investment Research, = Inc.. Member 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 honored.  Please call our office, or = Cambridge Investment Research trading desk at = 800-756-8115
, for all buy/sell = orders.  Please be advised that communications regarding trades in = your 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, and use by any person who is not the intended recipient is = prohibited.  Any person who receives this communication in error is = requested to immediately destroy the text of this communication without = copying or further dissemination.  Your cooperation is = appreciated.

<= /div>= --Apple-Mail=_A13BC6A2-84D2-4039-8448-6D87C4837CC5--