Return-Path: Received: (qmail 9499 invoked from network); 1 Aug 2001 09:05:09 -0000 Received: from unknown (HELO murphys-inbound.services.quay.plus.net) (212.159.14.225) by excalibur.plus.net with SMTP; 1 Aug 2001 09:05:09 -0000 Received: (qmail 25312 invoked from network); 1 Aug 2001 09:04:50 -0000 Received: from unknown (HELO post.thorcom.com) (212.172.148.70) by murphys with SMTP; 1 Aug 2001 09:04:50 -0000 Received: from majordom by post.thorcom.com with local (Exim 3.16 #2) id 15RrrC-0006NZ-00 for rsgb_lf_group-outgoing@blacksheep.org; Wed, 01 Aug 2001 09:59:58 +0100 Received: from fep01.swip.net ([130.244.199.129] helo=fep01-svc.swip.net) by post.thorcom.com with esmtp (Exim 3.16 #2) id 15RrrB-0006NU-00 for rsgb_lf_group@blacksheep.org; Wed, 01 Aug 2001 09:59:57 +0100 Received: from oemcomputer ([212.151.37.154]) by fep01-svc.swip.net with SMTP id <20010801085912.DHAY28683.fep01-svc.swip.net@oemcomputer> for ; Wed, 1 Aug 2001 10:59:12 +0200 Message-ID: <001801c11a5f$ed6ddce0$9a2597d4@oemcomputer> From: "Johan Bodin" To: rsgb_lf_group@blacksheep.org Subject: LF: SV: Re: SV: LF Receivers Date: Wed, 1 Aug 2001 10:59:14 +0300 MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1; format=flowed Content-Transfer-Encoding: 8bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 4.72.3110.5 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group Sender: John, >3579.545 kHz color burst crystal You are right! Thanks for the tip. I don't know if it is "easily pullable" though... I remember trying a "32 pF parallel 3579 rock" in series resonant mode but I did not get lower than about 3579.3 kHz. The oscillator was a two transistor thing with the xtal connected between the emitters (xtal sees low Z = preserve the Q). Perhaps it will work with some additional inductance in series with the xtal but the Q will suffer I guess... Maybe a *very* low quality xtal will do the trick (lower equivalent L/C = lower Q)? Do you have any circuit suggestion for a suitable "rock bender"? 73 Johan SM6LKM