X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from [65.33.163.227] (account marv@lancaironline.net) by logan.com (CommuniGate Pro WebUser 4.3c5) with HTTP id 936413 for lml@lancaironline.net; Sun, 08 May 2005 08:50:52 -0400 From: "Marvin Kaye" Subject: Re: [LML] Radio noise To: lml X-Mailer: CommuniGate Pro WebUser Interface v.4.3c5 Date: Sun, 08 May 2005 08:50:52 -0400 Message-ID: In-Reply-To: <000801c553c5$3c656d70$6801a8c0@Booms> References: <000801c553c5$3c656d70$6801a8c0@Booms> X-Priority: 3 MIME-Version: 1.0 Content-Type: text/plain; charset="windows-1250"; format="flowed" Content-Transfer-Encoding: 8bit Posted for "John Chambers" : Ian, Long ago, I encountered the same problem while testing my new Vari-eze. The dynamic mic of the now-old David Clark 10-30 headsets could not self-cancel the increasing noise as I approached cruise speed. After cussing my radio and intercom squelches (which worked perfectly) I tried the electret mics from the DC 10-40 headsets. That solved the problem forever and I still use these 20 year old headsets. That may not be your problem if your headsets are relatively new, as it is now difficult to even find a headset that comes with the cheaper dynamic mic. John Chambers """ Up to 175 knots my radios and audio panel function perfectly. At about 175knots plus I start to get a lot of noise through the headset as if the mic has opened and let the aircraft noise into the system. I have tried playing withthe squelch to no avail. """