Return-Path: Received: from rly-md03.mx.aol.com (rly-md03.mail.aol.com [172.20.29.141]) by air-md02.mail.aol.com (v119.12) with ESMTP id MAILINMD023-8f34716538e4; Wed, 17 Oct 2007 14:25:40 -0400 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by rly-md03.mx.aol.com (v119.12) with ESMTP id MAILRELAYINMD033-8f34716538e4; Wed, 17 Oct 2007 14:25:22 -0400 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1IiDZs-0005Bs-BS for rs_out_1@blacksheep.org; Wed, 17 Oct 2007 19:25:08 +0100 Received: from [83.244.159.144] (helo=relay3.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1IiDZr-0005Bj-Ir for rsgb_lf_group@blacksheep.org; Wed, 17 Oct 2007 19:25:07 +0100 Received: from smtpout08-04.prod.mesa1.secureserver.net ([64.202.165.12] helo=smtpout08.prod.mesa1.secureserver.net) by relay3.thorcom.net with smtp (Exim 4.63) (envelope-from ) id 1IiDZm-0001kp-Oa for rsgb_lf_group@blacksheep.org; Wed, 17 Oct 2007 19:25:07 +0100 Received: (qmail 5947 invoked from network); 17 Oct 2007 18:24:48 -0000 Received: from unknown (208.37.242.34) by smtpout08-04.prod.mesa1.secureserver.net (64.202.165.12) with ESMTP; 17 Oct 2007 18:24:48 -0000 Message-ID: <4716534A.7080202@w1tag.com> Date: Wed, 17 Oct 2007 14:24:10 -0400 From: John Andrews User-Agent: Thunderbird 2.0.0.6 (Windows/20070728) MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org References: <101720071453.22380.471621E3000421690000576C22058861720B97010D0A020E06979D0E03@comcast.net> <001a01c810e7$91a48ff0$baccfc3e@g3kev> In-Reply-To: <001a01c810e7$91a48ff0$baccfc3e@g3kev> X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,none Subject: Re: LF: MFJ259B Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.0 required=5.0 tests=none autolearn=no version=2.63 X-SA-Exim-Scanned: Yes Sender: owner-rsgb_lf_group@blacksheep.org Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group X-SA-Exim-Rcpt-To: rs_out_1@blacksheep.org X-SA-Exim-Scanned: No; SAEximRunCond expanded to false X-AOL-IP: 193.82.116.20 X-AOL-SCOLL-AUTHENTICATION: listenair ; SPF_helo : X-AOL-SCOLL-AUTHENTICATION: listenair ; SPF_822_from : X-Mailer: Unknown (No Version) Mal, The harmonic content of a divider's rectangular waveform would be a problem for the wideband detector circuitry in the analyzer. The waveform is typically not an issue for a classic bridge with a receiver for a detector, as the harmonics are ignored. If you could incorporate a good low pass filter to take out the third harmonic and above, then your idea should work. John A. hamilton mal wrote: > Tnx Warren for the prompt reply and also all the others that responded, much > appreciated. > One approach that I had in mind was an outboard bit of hardware like a > divider that fed the ant socket of the mfj 259 b and for instance use the > 4 - 10 mhz range, divide by 10 to give 400 - 1000 khz (500 khz band). Has > anyone seen a cct along these lines.