X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from [216.211.128.10] (HELO mail-in03.adhost.com) by logan.com (CommuniGate Pro SMTP 5.0.9) with ESMTP id 1062085 for flyrotary@lancaironline.net; Sat, 08 Apr 2006 00:12:41 -0400 Received-SPF: none receiver=logan.com; client-ip=216.211.128.10; envelope-from=joeh@pilgrimtech.com Received: from Pilgrim10 (c-67-183-14-47.hsd1.wa.comcast.net [67.183.14.47]) by mail-in03.adhost.com (Postfix) with ESMTP id 792542FD8AB for ; Fri, 7 Apr 2006 21:11:48 -0700 (PDT) (envelope-from joeh@pilgrimtech.com) From: "Joe Hull" To: "'Rotary motors in aircraft'" Subject: Radio Saga Beginning Date: Fri, 7 Apr 2006 21:11:49 -0700 Message-ID: <000101c65ac2$91434ce0$bb02a8c0@redmond.corp.microsoft.com> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0002_01C65A87.E4E474E0" X-Mailer: Microsoft Office Outlook 11 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2670 Thread-Index: AcZawo62isGZ9y4MTdmLsFafKh7MIw== This is a multi-part message in MIME format. ------=_NextPart_000_0002_01C65A87.E4E474E0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Hey Buly (and anyone else) I've got an RST intercom and an ICOM radio (don't remember the number but only 1 year old). When the engine is off I can hear and Xmit fine. Turn the engine on and I can still hear fine (i.e. no noise) but when I key the mic there is a ton of noise in my headset and in the broadcast. It's not high pitched just a mid-range noise. I ruled out the alternator by taking the belt off - noise was still there. So why noise only when I transmit? Any thoughts? Joe Hull Cozy Mk-IV #991 (Done Building! In Phase1 Flight Test - 0 hrs flown) Redmond (Seattle), Washington ------=_NextPart_000_0002_01C65A87.E4E474E0 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Hey Buly (and anyone = else)

I’ve got an RST intercom and an ICOM radio = (don’t remember the number but only 1 year old).  When the engine is off I = can hear and Xmit fine. Turn the engine on and I can still hear fine (i.e. = no noise) but when I key the mic there is a ton of noise in my headset and = in the broadcast. It’s not high pitched just a mid-range = noise.

I ruled out the alternator by taking the belt off = – noise was still there.

 

So why noise only when I transmit? Any = thoughts?

 

Joe Hull

Cozy Mk-IV #991 (Done Building! In Phase1 Flight Test - 0 = hrs flown)

Redmond (Seattle), Washington

 

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