X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from ispmxmta05-srv.alltel.net ([166.102.165.166] verified) by logan.com (CommuniGate Pro SMTP 5.0.9) with ESMTP id 1062245 for flyrotary@lancaironline.net; Sat, 08 Apr 2006 07:58:22 -0400 Received-SPF: pass receiver=logan.com; client-ip=166.102.165.166; envelope-from=jskmberki@alltel.net Received: from joehomepc ([71.31.135.23]) by ispmxmta05-srv.alltel.net with SMTP id <20060408115735.BXBP29276.ispmxmta05-srv.alltel.net@joehomepc> for ; Sat, 8 Apr 2006 06:57:35 -0500 Message-ID: <002201c65b03$9ca4e6c0$01fea8c0@joehomepc> From: "Joe Berki" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: Radio Saga Beginning Date: Sat, 8 Apr 2006 07:57:29 -0400 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_001F_01C65AE2.154267A0" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1506 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1506 This is a multi-part message in MIME format. ------=_NextPart_000_001F_01C65AE2.154267A0 Content-Type: text/plain; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable Joe, Disreguard the previous message. I need coffee. Look at how the = mike cable is grounded. You may have a ground loop in that circuit. = The shield should be grounded at one point. There might be noise on the = ptt line also. Do you have an oscilliscope? Joe Berki Limo EZ ----- Original Message -----=20 From: Bulent Aliev=20 To: Rotary motors in aircraft=20 Sent: Saturday, April 08, 2006 1:20 AM Subject: [FlyRotary] Re: Radio Saga Beginning Beats me Joe? I was also like a babe in the woods with my radio, until = I installed a new Icom and small and simple intercom. Now is perfect. = RST is on my desk ready for Ebay. My fuel pumps used to make lots of noise also? Buly On Apr 8, 2006, at 12:11 AM, Joe Hull wrote: Hey Buly (and anyone else) I=92ve got an RST intercom and an ICOM radio (don=92t 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=92s not high pitched just a mid-range noise. I ruled out the alternator by taking the belt off =96 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_001F_01C65AE2.154267A0 Content-Type: text/html; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable
Joe,
    Disreguard the = previous=20 message.  I need coffee.  Look at how the mike cable is=20 grounded.  You may have a ground loop in that circuit.  The = shield=20 should be grounded at one point.  There might be noise on the ptt = line=20 also.  Do you have an oscilliscope?
 
Joe Berki
Limo EZ
----- Original Message -----
From:=20 Bulent=20 Aliev
Sent: Saturday, April 08, 2006 = 1:20=20 AM
Subject: [FlyRotary] Re: Radio = Saga=20 Beginning

Beats me Joe? I was also like a babe in the woods with my radio, = until I=20 installed a new Icom and  small and simple intercom. Now is = perfect. RST=20 is on my desk ready for Ebay.
My fuel pumps used to make lots of noise also?
Buly

On Apr 8, 2006, at 12:11 AM, Joe Hull wrote:

Hey Buly (and anyone=20 else)

I=92ve got an RST = intercom and an=20 ICOM radio (don=92t remember the number but only 1 year old).  = When the=20 engine is off I can hear and Xmit fine. Turn the engine on and I can = still=20 hear fine (i.e. no noise) but when I key the mic there is a ton of = noise in=20 my headset and in the broadcast. It=92s not high pitched just a = mid-range=20 noise.

I ruled out the = alternator by=20 taking the belt off =96 noise was still there.

So why noise only when = I=20 transmit? Any thoughts?

Joe = Hull

Cozy Mk-IV = #991 (Done=20 Building! In Phase1 Flight Test - 0 hrs flown)

Redmond=20 (Seattle), = Washington


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