X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml Date: Wed, 23 Aug 2006 15:01:25 -0400 Message-ID: X-Original-Return-Path: Received: from mail9.tpgi.com.au ([203.12.160.104] verified) by logan.com (CommuniGate Pro SMTP 5.1c.3) with ESMTPS id 1345238 for lml@lancaironline.net; Wed, 23 Aug 2006 14:55:25 -0400 Received-SPF: pass receiver=logan.com; client-ip=203.12.160.104; envelope-from=domcrain@tpg.com.au X-TPG-Antivirus: Passed Received: from CRAIN (60-240-142-58-vic-pppoe.tpgi.com.au [60.240.142.58]) by mail9.tpgi.com.au (envelope-from domcrain@tpg.com.au) (8.13.6/8.13.6) with ESMTP id k7NIsYIX030778 for ; Thu, 24 Aug 2006 04:54:38 +1000 From: "Dominic V Crain" X-Original-To: "'Lancair Mailing List'" Subject: VHF feedback X-Original-Date: Thu, 24 Aug 2006 04:54:32 +1000 X-Original-Message-ID: <000e01c6c6e5$94450700$0202a8c0@CRAIN> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_000F_01C6C739.65F5F900" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.6626 Importance: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2962 This is a multi-part message in MIME format. ------=_NextPart_000_000F_01C6C739.65F5F900 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Any advice on this one. Have a problem with loud squeal on VHF transmission - happens with both = VHF sets, but only from the left side. Right side doesn't happen. Have done all the suggested things from onlookers, cleaning terminals, = etc etc., and it only occurs after engine start. Use Lightspeed ANR 20G headsets. Changed the SPA 400 intercom with another identical unit - no avail. Can't quite recall when it started. Wondered if the installation of = Infinity grips in March might have introduced it with a wiring problem - this was done by a avionics technician. Switching off the intercom and it goes away. It is quite loud. Any final suggestions? Dom Crain VH-CZJ ------=_NextPart_000_000F_01C6C739.65F5F900 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Any advice on this one.

Have a problem with loud squeal on VHF = transmission – happens with both VHF sets, but only from the left side. Right side = doesn’t happen.

Have done all the suggested things from = onlookers, cleaning terminals, etc etc., and it only occurs after engine = start.

Use Lightspeed ANR 20G = headsets.

Changed the SPA 400 intercom with another = identical unit – no avail.

Can’t quite recall when it started. = Wondered if the installation of Infinity grips in March might have introduced it = with a wiring problem – this was done by a avionics = technician.

Switching off the intercom and it goes = away.

It is quite loud.

Any final suggestions?

Dom Crain

VH-CZJ

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