X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Fri, 11 May 2012 10:16:11 -0400 Message-ID: X-Original-Return-Path: Received: from [137.118.16.59] (HELO smtp1.av-mx.com) by logan.com (CommuniGate Pro SMTP 5.4.5) with ESMTP id 5532643 for lml@lancaironline.net; Fri, 11 May 2012 08:48:52 -0400 Received-SPF: pass receiver=logan.com; client-ip=137.118.16.59; envelope-from=pinetownd@volcano.net Received: from DennisPC (65-174-1-121.dsl.volcano.net [65.174.1.121]) (Authenticated sender: pinetownd@volcano.net) by smtp1.av-mx.com (Postfix) with ESMTP id 45FF1292A0D for ; Fri, 11 May 2012 08:48:14 -0400 (EDT) X-Original-Message-ID: <7BD81161B7DA4F9E8D4D422B632665FE@DennisPC> From: "Dennis Johnson" X-Original-To: "Lancair Mailing List" References: In-Reply-To: Subject: Re: [LML] Instrument Panel comments/advice requested X-Original-Date: Fri, 11 May 2012 05:48:16 -0700 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_1527_01CD2F39.A94560B0" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Windows Mail 6.0.6002.18197 X-MimeOLE: Produced By Microsoft MimeOLE V6.0.6002.18463 This is a multi-part message in MIME format. ------=_NextPart_000_1527_01CD2F39.A94560B0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Hi Doug, I often fly IFR in my Legacy with only a single SL 30 radio. Don't = forget that the SL 30 is like having one and a half radios, since you = can listen on the backup frequency while still tuned to the primary = frequency. That works well approaching my destination by monitoring the = ATIS while still remaining on ATC's frequency. Enroute, when I want to = check weather, I request clearance from ATC to leave their frequency for = five minutes to check weather. =20 I have a hand held radio for backup, but in five years of flying my = Legacy, the SL 30 has been 100% reliable. (I know, this posting will = probably cause the SL 30 to fail on my next flight!) I'm happy with the single radio plus hand held radio as backup. The = disadvantage of a hand held radio is that the rubber ducky antenna has = limited range. Put a connector into the antenna feed line and if your = main radio fails, disconnect it from the antenna and connect your hand = held to the antenna for increased range. =20 I also have a Chelton system and I have a hand held VFR GPS as backup = for that. The benefit of hand helds for backup is that they share no = common hardware with the primary. For example, two panel mounted radios = sharing a single antenna, have a single point of failure, plus they = might also share some kind of relay, another single point of failure. = You might not achieve the additional reliability you expect. =20 Best, Dennis Legacy ------=_NextPart_000_1527_01CD2F39.A94560B0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

Hi Doug,

I often fly IFR in my Legacy with only a single SL 30 radio. = Don't=20 forget that the SL 30 is like having one and a half radios, since you = can listen=20 on the backup frequency while still tuned to the primary = frequency. That=20 works well approaching my destination by monitoring the ATIS while still = remaining on ATC's frequency. Enroute, when I want to check = weather, I=20 request clearance from ATC to leave their frequency for five minutes to = check=20 weather.

I have a hand held radio for backup, but in five years of flying my = Legacy,=20 the SL 30 has been 100% reliable. (I know, this posting will = probably=20 cause the SL 30 to fail on my next flight!)

I'm happy with the single radio plus hand held radio as = backup. The=20 disadvantage of a hand held radio is that the rubber ducky antenna has = limited=20 range. Put a connector into the antenna feed line and if your main = radio=20 fails, disconnect it from the antenna and connect your hand held to the = antenna=20 for increased range.

I also have a Chelton system and I have a hand held VFR GPS as = backup for=20 that. The benefit of hand helds for backup is that they share no = common=20 hardware with the primary. For example, two panel mounted radios = sharing a=20 single antenna, have a single point of failure, plus they might also = share some=20 kind of relay, another single point of failure. You might not = achieve the=20 additional reliability you expect.

Best,

Dennis

Legacy

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