X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from imf00aec.mail.bellsouth.net ([205.152.59.48] verified) by logan.com (CommuniGate Pro SMTP 5.0.8) with ESMTP id 985483 for flyrotary@lancaironline.net; Tue, 14 Feb 2006 22:52:13 -0500 Received-SPF: pass receiver=logan.com; client-ip=205.152.59.48; envelope-from=atlasyts@bellsouth.net Received: from ibm58aec.bellsouth.net ([70.149.0.133]) by imf16aec.mail.bellsouth.net with ESMTP id <20060215034952.XMPC2455.imf16aec.mail.bellsouth.net@ibm58aec.bellsouth.net> for ; Tue, 14 Feb 2006 22:49:52 -0500 Received: from [192.168.0.100] (really [70.149.0.133]) by ibm58aec.bellsouth.net with ESMTP id <20060215034952.TPUH2285.ibm58aec.bellsouth.net@[192.168.0.100]> for ; Tue, 14 Feb 2006 22:49:52 -0500 Mime-Version: 1.0 (Apple Message framework v746.2) In-Reply-To: References: Content-Type: multipart/alternative; boundary=Apple-Mail-5-606974799 Message-Id: From: Bulent Aliev Subject: Re: [FlyRotary] Re: Radio noise Date: Tue, 14 Feb 2006 22:50:48 -0500 To: "Rotary motors in aircraft" X-Mailer: Apple Mail (2.746.2) --Apple-Mail-5-606974799 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed > Well, I just came from the hangar, 9PM and have not made any > progress. Tried everything suggested. Disconnected the radio/AP > grounds and run them directly to the battery - same problem > Opened the AP and extra grounded the unit - Nada > Everything that can make noise is making it? > Capacitors as suggested by Chad, did not make any difference. > I'll have to sleep on it. Too tired and frustrated. > Buly > > Hi Buly, > > I've coward away from this thread, mostly because of the potential > to get really complicated. However, I have had some significant > alternator noise on Val Com 760 radios in the past, and was told by > Val to install a noise choke that Radio Shack sells. It's part > number 270-030A, which consists of a small transformer, and cap > that goes in the power wire that feeds the radio. This little > choke kit was like magic for me, and several others with Val radios > (Rich will find one of these on his plane as well). > > Now, I don't know what radio you have, but if it's a Val, you need > one of these kits. If not, then it sure won't hurt, and could do > some real good. I'll also warn you that you won't find this part > number online. When I looked for the one for the RV-3, I thought > they might have discontinued it, but it was hanging on the shelf at > the store, even though it wasn't online. > > Good luck, > Rusty (RF noise is not the MRI's friend) > By golly, I have Val Com760 too! Thanks Rusty. I'll try to find one of these chockes. Buly --Apple-Mail-5-606974799 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=ISO-8859-1

Well, I just came from the hangar, 9PM and have not made = any=A0
progress. Tried everything suggested. Disconnected the = radio/AP=A0
grounds and run them directly to the battery - same = problem
Opened the AP and extra grounded the unit - = Nada
Everything that can make noise is making it?
Capacitors as = suggested by Chad, did not make any difference.
I'll have to sleep on = it. Too tired and frustrated.
Buly

Hi = Buly,
=A0
I've coward = away from this thread, mostly because of the potential to get really = complicated.=A0 However, I have had some significant alternator noise on = Val Com 760 radios in the past, and was told by Val to install a noise = choke that Radio Shack sells.=A0 It's part number 270-030A,=A0 = which=A0consists of a small transformer, and cap that goes in the power = wire that feeds the radio.=A0 This little choke kit was like magic for = me, and several others with Val radios (Rich will find one of these on = his plane as well).=A0
=A0
=
Now, I don't know what radio you have, but if it's a Val, you = need one of these kits.=A0 If not, then it sure won't hurt, and could do = some real good.=A0 I'll also warn you that you won't find this part = number online.=A0 When I looked for the one for the RV-3, I thought they = might have discontinued it, but it was hanging on the shelf at the = store, even though it wasn't online.=A0
=A0
Good = luck,
Rusty (RF noise is not the MRI's = friend)


By golly, I have Val = Com760 too! Thanks Rusty. I'll try to find one of these = chockes.
Buly
= --Apple-Mail-5-606974799--