X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Thu, 17 Apr 2008 00:12:50 -0400 Message-ID: X-Original-Return-Path: Received: from smtp-ext-03.mx.pitdc1.expedient.net ([206.210.69.143] verified) by logan.com (CommuniGate Pro SMTP 5.2.1) with ESMTPS id 2851410 for lml@lancaironline.net; Wed, 16 Apr 2008 23:44:48 -0400 Received-SPF: none receiver=logan.com; client-ip=206.210.69.143; envelope-from=rpastusek@htii.com Received: from dlhtpax009 (static-71-178-198-10.washdc.fios.verizon.net [71.178.198.10]) by smtp-ext-03.mx.pitdc1.expedient.net (Postfix) with ESMTPA id 107293830B for ; Wed, 16 Apr 2008 23:44:11 -0400 (EDT) Reply-To: From: "Robert Pastusek" X-Original-To: "'Lancair Mailing List'" References: In-Reply-To: Subject: RE: [LML] Bob Archer Antenna Wiring X-Original-Date: Wed, 16 Apr 2008 23:44:07 -0400 Organization: Holmes-Tucker International, Inc. X-Original-Message-ID: <012701c8a03d$4a5bab70$df130250$@com> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0128_01C8A01B.C34A0B70" X-Mailer: Microsoft Office Outlook 12.0 Thread-Index: AcifHNRQ5TIcI3DEQb6IaNBLKFs7xgBHZHxw Content-Language: en-us This is a multipart message in MIME format. ------=_NextPart_000_0128_01C8A01B.C34A0B70 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Rob Wolf writes re Bob Archer Antennae wiring: Do I understand correctly that the center conductor of the RG-400 cable goes to the terminal that is electrically isolated from the antenna, and the shield goes to the terminal that is electrically connected to the antenna? Rob, That is correct. The "isolated" terminal is the active transmitting/receiving element; the "antennae" could be considered the "ground plane." A tip that may help: Use a piece of thin copper sheet (available at a model or crafts store) to make a small clamp that looks like a standard Adel clamp. The inside diameter should be a bit smaller than the outside diameter of the RG-400. Strip back the outer shield to expose the needed amount of center conductor and insulation. Then remove an additional section of the outer insulation to expose a length of shield that corresponds to the width of your clamp (1/4" or so). Put the clamp over the exposed shield, then fasten the tongue of the clamp to the "antenna" post. Then solder your clamp to the shield, being careful not to damage the center conductor or it's insulation. This makes a secure mechanical and electrical connection and holds the antennae cable in place. Bob ------=_NextPart_000_0128_01C8A01B.C34A0B70 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Rob Wolf writes re Bob Archer Antennae = wiring:

Do I understand correctly that the center conductor = of the RG-400 cable goes to the terminal that is electrically isolated from the antenna, and the shield goes to the terminal that is electrically = connected to the antenna?

Rob,

That is correct. The = “isolated” terminal is the active transmitting/receiving element; the = “antennae” could be considered the “ground plane.” =

 

A tip that may help: = Use a piece of thin copper sheet (available at a model or crafts store) to make a = small clamp that looks like a standard Adel clamp. The inside diameter should = be a bit smaller than the outside diameter of the RG-400. Strip back the = outer shield to expose the needed amount of center conductor and insulation. Then = remove an additional section of the outer insulation to expose a length of shield = that corresponds to the width of your clamp (1/4” or so). Put the clamp = over the exposed shield, then fasten the tongue of the clamp to the = “antenna” post.  Then solder your clamp to the shield, being careful not to = damage the center conductor or it’s insulation. This makes a secure = mechanical and electrical connection and holds the antennae cable in = place.

 

Bob

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