X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from imf18aec.mail.bellsouth.net ([205.152.59.66] verified) by logan.com (CommuniGate Pro SMTP 5.0.8) with ESMTP id 984147 for flyrotary@lancaironline.net; Tue, 14 Feb 2006 00:11:17 -0500 Received-SPF: pass receiver=logan.com; client-ip=205.152.59.66; envelope-from=atlasyts@bellsouth.net Received: from ibm59aec.bellsouth.net ([70.149.0.133]) by imf18aec.mail.bellsouth.net with ESMTP id <20060214051031.WJN4052.imf18aec.mail.bellsouth.net@ibm59aec.bellsouth.net> for ; Tue, 14 Feb 2006 00:10:31 -0500 Received: from [192.168.0.100] (really [70.149.0.133]) by ibm59aec.bellsouth.net with ESMTP id <20060214051030.KMCR4015.ibm59aec.bellsouth.net@[192.168.0.100]> for ; Tue, 14 Feb 2006 00:10:30 -0500 Mime-Version: 1.0 (Apple Message framework v746.2) In-Reply-To: References: Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed Message-Id: <30B50386-76EA-4E73-9ED3-EA7B0DA180B8@bellsouth.net> Content-Transfer-Encoding: 7bit From: Bulent Aliev Subject: Re: [FlyRotary] Re: Radio noise Date: Tue, 14 Feb 2006 00:12:14 -0500 To: "Rotary motors in aircraft" X-Mailer: Apple Mail (2.746.2) Thanks Richard. Looks like I have to filter every motor separately? We missed you at Bill's in TX. Where were you? Nobody to take care of the livestock? :) Buly On Feb 14, 2006, at 1:58 AM, Richard Sohn wrote: > I had the same problem on my AVID when I started flying it. The > only thing I could get some improvement was to add a high quality > capacitor on the alternator. The best I found was the one Aircraft > Spruce is selling. My alternator is running with internal > regulator. If you are running an external regulator, you may need > filtering on these lines too. Keep in mind, the effectiveness of > filtering this kind of noise depends on having the filter as close > to the source of the noise as possible. > For this same reason, every motor will have to be filtered separate. > > Richard Sohn > N-2071U > > > > ----- Original Message ----- From: "Bulent Aliev" > > To: "Rotary motors in aircraft" > Sent: Monday, February 13, 2006 5:59 PM > Subject: [FlyRotary] Radio noise > > >> Here is a problem for you large brained engineers: >> My radio is picking up noise from all the electrical motors >> including the alternator. I took the alternator to the shop and >> checked "as new". When I disconnect the coax from the radio, the >> noises stop, which leads me to believe the antenna coax is >> picking up the interference somehow. Guy at the airport suggested >> a clamp-on ferrite filter on the coax. I bought one tonight, but >> did not have time to test it. >> The offenders are: fuel pumps, nose gear motor and alternator. >> Any Ideas? >> >> >> Buly >> CZ MK-IV >> >> -- >> Homepage: http://www.flyrotary.com/ >> Archive and UnSub: http://mail.lancaironline.net/lists/flyrotary/ > > > -- > Homepage: http://www.flyrotary.com/ > Archive and UnSub: http://mail.lancaironline.net/lists/flyrotary/