X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Thu, 24 Oct 2013 12:47:29 -0400 Message-ID: X-Original-Return-Path: Received: from [208.113.200.5] (HELO homiemail-a45.g.dreamhost.com) by logan.com (CommuniGate Pro SMTP 6.0.7) with ESMTP id 6562988 for lml@lancaironline.net; Thu, 24 Oct 2013 11:31:38 -0400 Received-SPF: none receiver=logan.com; client-ip=208.113.200.5; envelope-from=r.rickard@rcginc-us.com Received: from homiemail-a45.g.dreamhost.com (localhost [127.0.0.1]) by homiemail-a45.g.dreamhost.com (Postfix) with ESMTP id 7B3C1480C0 for ; Thu, 24 Oct 2013 08:31:05 -0700 (PDT) Received: from [192.168.1.30] (68-184-216-121.dhcp.stls.mo.charter.com [68.184.216.121]) (Authenticated sender: r.rickard@rcginc-us.com) by homiemail-a45.g.dreamhost.com (Postfix) with ESMTPA id 2F61148069 for ; Thu, 24 Oct 2013 08:31:05 -0700 (PDT) From: Bob Rickard Content-Type: multipart/alternative; boundary="Apple-Mail=_33726DF2-123E-4159-854F-AE2A738B4663" X-Original-Message-Id: Mime-Version: 1.0 (Mac OS X Mail 7.0 \(1816\)) Subject: Re: [LML] Noisy COM on low end freqs only....? X-Original-Date: Thu, 24 Oct 2013 10:31:04 -0500 References: X-Original-To: Lancair Mailing List In-Reply-To: X-Mailer: Apple Mail (2.1816) --Apple-Mail=_33726DF2-123E-4159-854F-AE2A738B4663 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=windows-1252 I had this same problem in my IV-P and it turned out to be a bad Mag. = Tightened connections and checked wires and all was fixed=85. Bob R On Oct 24, 2013, at 8:06 AM, YahooMail wrote: > 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 >> SL 30 is on an exterior Comant 121; G530 is on a bonded in AAE in = vertical >>=20 >> My transmissions are heard fine >>=20 >> I actually here incoming transmissions when it is staticy fairly = well, most of the time >>=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. Bob Rickard President, Rickard Consulting Group, Inc. r.rickard@rcginc-us.com --Apple-Mail=_33726DF2-123E-4159-854F-AE2A738B4663 Content-Type: multipart/related; type="text/html"; boundary="Apple-Mail=_6894A933-99A2-405F-BF49-C779F3158C25" --Apple-Mail=_6894A933-99A2-405F-BF49-C779F3158C25 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=windows-1252 I had = this same problem in my IV-P and it turned out to be a bad Mag. =  Tightened connections and checked wires and all was = fixed=85.

Bob = R


On Oct 24, 2013, at 8:06 AM, = YahooMail <arrow54t@yahoo.com> = wrote:

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-content-edited=3D"true">

Bob Rickard
President, = Rickard Consulting Group, Inc.
<= br class=3D"Apple-interchange-newline">

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