X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml Date: Sun, 08 Oct 2006 17:58:14 -0400 Message-ID: X-Original-Return-Path: Received: from imo-m16.mx.aol.com ([64.12.138.206] verified) by logan.com (CommuniGate Pro SMTP 5.1c.5) with ESMTP id 1449442 for lml@lancaironline.net; Sun, 08 Oct 2006 11:15:30 -0400 Received-SPF: pass receiver=logan.com; client-ip=64.12.138.206; envelope-from=Sky2high@aol.com Received: from Sky2high@aol.com by imo-m16.mx.aol.com (mail_out_v38_r7.6.) id q.486.cae1791 (43931) for ; Sun, 8 Oct 2006 11:15:09 -0400 (EDT) From: Sky2high@aol.com X-Original-Message-ID: <486.cae1791.325a6ffd@aol.com> X-Original-Date: Sun, 8 Oct 2006 11:15:09 EDT Subject: Re: [LML] Weak Antenna X-Original-To: lml@lancaironline.net MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="-----------------------------1160320508" X-Mailer: 9.0 Security Edition for Windows sub 5326 X-Spam-Flag: NO -------------------------------1160320508 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Content-Language: en =20 In a message dated 10/6/2006 10:17:35 P.M. Central Daylight Time, =20 lsmith541@msn.com writes: I have a glass ES with 2 Bob Archer com antenna, one in the baggage area =20 fuselage side (SA-006), the other in the vert stab (SA-008). The SA-008 in= the=20 vert stab uses RG58 lead in coax, the other uses the newer RG400. =20 =20 The problem is the SA-008 in the vert stab produces a weak signal as =20 reported by the controllers. If I switch the antenna between com1 & com2 t= he=20 problem moves with the antenna. This is not a new problem - it's been ther= e since=20 first flight. =20 Question for the antenna experts: Could this problem be caused solely be=20 the higher impedance RG58 coax or is it likely there are other problems? T= his=20 is a single piece of coax with not splices. =20 =20 I'm vacillating between installing an external antenna on the belly or just= =20 changing out the coax on the vert stab antenna. I don't have an access pan= el=20 in the vert stab but could install one if needed. =20 =20 Suggestions/advice appreciated.=20 Leon, =20 If the fuselage antenna is working consider using a radio switcher (not a =20 splitter) thru which both radios can use the same antenna for transmitting.= =20 Check any online avionics shop, like AeroCrafters. =20 =20 Item#CI601=20 Dual Communication / Single Duplexer - Switching Antenna =20 Frequency =E2=80=A2 118-136 MHz=20 Dual communication/single antenna duplexer designed to provide operation=20 between two transceivers and one antenna. In the de-energized mode, the dip= lexer=20 acts as a 3 dB coupler with the output ports isolated by 20 dB. Control=20 voltage actuated by the microphone circuit switches the antenna to transmit= ter=20 No. 1 or transmitter No. 2. =20 QTY EA @ $690.00=20 =20 Scott Krueger AKA Grayhawk LNC2 N92EX IO 320 SB 89/96 On Vacation -------------------------------1160320508 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Content-Language: en

In a message dated 10/6/2006 10:17:35 P.M. Central Daylight Time,=20 lsmith541@msn.com writes:

<= FONT=20 style=3D"BACKGROUND-COLOR: transparent" face=3DVerdana color=3D#000000 siz= e=3D3>

I have a glass ES with 2 Bob Archer com antenna, one in the baggage a= rea=20 fuselage side (SA-006), the other in the vert stab (SA-008). Th= e=20 SA-008 in the vert stab uses RG58 lead in coax, the other uses t= he=20 newer RG400.

The problem is the SA-008 in the vert stab produces a weak signal as=20 reported by the controllers. If I switch the antenna between co= m1=20 & com2 the problem moves with the antenna. This is not a new pro= blem=20 - it's been there since first flight.

Question for the antenna experts: Could this problem be ca= used=20 solely be the higher impedance RG58 coax or is it likely there are other=20 problems? This is a single piece of coax with not splices.

I'm vacillating between installing an external antenna on the be= lly=20 or just changing out the coax on the vert stab antenna. I=20 don't have an access panel in the vert stab but could install one if=20 needed.

Suggestions/advice appreciated.

Leon,

If the fuselage antenna is working consider using a radio switcher (not= a=20 splitter) thru which both radios can use the same antenna for=20 transmitting. Check any online avionics shop, like AeroCrafters.

Item#CI601

Dual Communication / Si= ngle=20 Duplexer - Switching Antenna

3D""=20

Frequency =E2=80=A2 118= -136 MHz=20

Dual communication/single=20 antenna duplexer designed to provide operation between two transceivers and=20= one=20 antenna. In the de-energized mode, the diplexer acts as a 3 dB coupler with=20= the=20 output ports isolated by 20 dB. Control voltage actuated by the microphone=20 circuit switches the antenna to transmitter No. 1 or transmitter No. 2.=20

QTY EA @ $690.00

Scott Krueger=20 AKA Grayhawk
LNC2 N92EX IO 320 SB 89/96

On Vacation

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