X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Fri, 06 Jan 2012 13:09:25 -0500 Message-ID: X-Original-Return-Path: Received: from hrndva-omtalb.mail.rr.com ([71.74.56.124] verified) by logan.com (CommuniGate Pro SMTP 5.4.3) with ESMTP id 5340086 for lml@lancaironline.net; Fri, 06 Jan 2012 11:14:10 -0500 Received-SPF: none receiver=logan.com; client-ip=71.74.56.124; envelope-from=Wolfgang@MiCom.net X-Original-Return-Path: X-Authority-Analysis: v=2.0 cv=Pb19d1dd c=1 sm=0 a=MHZY6FYWMEQOp7S43i2QIw==:17 a=ttCsPuSJ-FAA:10 a=Ia-xEzejAAAA:8 a=C_IRinGWAAAA:8 a=puvb7L9wNSa7x5N2sNEA:9 a=3rz8e22ZfSZdLZERGU0A:7 a=wPNLvfGTeEIA:10 a=EzXvWhQp4_cA:10 a=si9q_4b84H0A:10 a=CjxXgO3LAAAA:8 a=olksw_cB_wDx_jwj_C0A:9 a=ZGqADevfGQLKpa0DadoA:7 a=rC2wZJ5BpNYA:10 a=MHZY6FYWMEQOp7S43i2QIw==:117 X-Cloudmark-Score: 0 X-Originating-IP: 74.218.201.50 Received: from [74.218.201.50] ([74.218.201.50:1182] helo=lobo) by hrndva-oedge04.mail.rr.com (envelope-from ) (ecelerity 2.2.3.46 r()) with ESMTP id 5B/F2-10702-EAD170F4; Fri, 06 Jan 2012 16:13:34 +0000 X-Original-Message-ID: <005801cccc8e$1fc2bc60$6401a8c0@lobo> From: "Wolfgang" X-Original-To: Subject: Fw: [LML] Nav/Com antennas X-Original-Date: Fri, 6 Jan 2012 11:13:26 -0500 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0055_01CCCC64.366730B0" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.2180 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 This is a multi-part message in MIME format. ------=_NextPart_000_0055_01CCCC64.366730B0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Borrow a VSWR meter and check the antenna you have. One used by ham = radio operators for 2 meters will do just fine. If the SWR is not much = worse than about 2:1 at the highest frequency, then leave it alone and = use it.=20 As far as antenna orientation goes, cross polarization loss (horizontal = to vertical) is only 3db. Wolfgang ----- Original Message -----=20 From: Matt losangeles=20 To: lml@lancaironline.net=20 Sent: Thursday, January 05, 2012 1:58 PM Subject: Re: [LML] Nav/Com antennas Thanks Jack. Now I just wish I would have bonded the 2nd antenna in the wingtip at = the factory. Somehow I have to open up the tip and slide one in. I guess = it is fiberglass, you can do anything with it. Matt From: Jack Morgan To: lml@lancaironline.net=20 Sent: Wednesday, January 4, 2012 1:38 PM Subject: [LML] Nav/Com antennas Hi Matt:=20 I just used the Nav antenna with no modification. Theoretically you = should shorten it to be optimum for the slightly higher Com frequency = range but the gain realized is not worth the effort. By leaving it alone = you have the option to use it as a Nav antenna in a later configuration = where maximum sensitivity is more important. To really optimize the = antenna for Com you would need to slightly change the tap point as well = as the coupling capacitance associated with the tap. In real practice = the noise level of the audio at the fringes of reception are not = significantly different between the Com1 and Nav antennas to warrant = retuning the Nav antenna. Jack Hi Jack, I am wanting to install an antenna in the left wingtip on my Legacy = for Com2. I am wondering if you could recommend one. It looks like I = will need to get one of the Bob Archer VOR antenna's. It doesn't look = like there is an actual Bob Archer Com antenna that will fit. What did = you use specifically in your wingtip? I remember reading some time back = that a com and vor antenna are very close in size so I am guessing I = could use them interchangeably. Not sure. If anyone else has any experience with this I would also appreciate = their input. Matt ------=_NextPart_000_0055_01CCCC64.366730B0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Borrow a VSWR meter and check the = antenna you have.=20 One used by ham radio operators for 2 meters will do just fine. If the = SWR is=20 not much worse than about 2:1 at the highest frequency, then leave it = alone and=20 use it.
 
As far as antenna orientation goes, = cross=20 polarization loss (horizontal to vertical) is only 3db.
 
Wolfgang
 
----- Original Message -----
From:=20 Matt losangeles
Sent: Thursday, January 05, = 2012 1:58=20 PM
Subject: Re: [LML] Nav/Com = antennas

Thanks = Jack.
 
Now I just wish = I would=20 have bonded the 2nd antenna in the wingtip at the factory. Somehow I = have to=20 open up the tip and slide one in. I guess it is fiberglass, you can do = anything with it.
 
Matt

From: Jack Morgan <jmorgan1023@comcast.net>To: lml@lancaironline.net =
Sent: Wednesday, January 4, = 2012 1:38=20 PM
Subject: [LML] = Nav/Com=20 antennas

Hi Matt:=20

I just used the Nav antenna with no modification. Theoretically = you=20 should shorten it to be optimum for the slightly higher Com frequency = range=20 but the gain realized is not worth the effort. By leaving it alone you = have=20 the option to use it as a Nav antenna in a later configuration where = maximum=20 sensitivity is more important. To really optimize the antenna for Com = you=20 would need to slightly change the tap point as well as the coupling=20 capacitance associated with the tap. In real practice the noise level = of the=20 audio at the fringes of reception are not significantly different = between the=20 Com1 and Nav antennas to warrant retuning the Nav antenna.

Jack

Hi Jack,
 
I am wanting to install an antenna in the left wingtip on = my=20 Legacy for Com2. I am wondering if you could recommend one. It looks = like I=20 will need to get one of the Bob Archer VOR antenna's. It doesn't = look like=20 there is an actual Bob Archer Com antenna that will fit. What did = you use=20 specifically in your wingtip? I remember reading some time back that = a com=20 and vor antenna are very close in size so I am guessing I could use = them=20 interchangeably. Not sure.
 
If anyone else has any experience with this I would also=20 appreciate their input.
 
Matt

<= /SPAN>



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