Return-Path: Received: from rly-mb05.mx.aol.com (rly-mb05.mail.aol.com [172.21.131.163]) by air-mb06.mail.aol.com (v124.15) with ESMTP id MAILINMB064-d0c4a5228522b9; Mon, 06 Jul 2009 12:37:50 -0400 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by rly-mb05.mx.aol.com (v124.15) with ESMTP id MAILRELAYINMB058-d0c4a5228522b9; Mon, 06 Jul 2009 12:37:41 -0400 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1MNrAk-0000fI-AE for rs_out_1@blacksheep.org; Mon, 06 Jul 2009 17:36:06 +0100 Received: from [83.244.159.144] (helo=relay3.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1MNrAj-0000f9-Do for rsgb_lf_group@blacksheep.org; Mon, 06 Jul 2009 17:36:05 +0100 Received: from ttsmtp-4.cpwnetworks.com ([62.24.128.245] helo=ttsmtp.cpwnetworks.com) by relay3.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1MNrAh-00029e-7Z for rsgb_lf_group@blacksheep.org; Mon, 06 Jul 2009 17:36:05 +0100 X-Path: TalkTalk-smtp X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: AuYEAHHDUUpZ8h+r/2dsb2JhbACCJi6CFId/BsIggkCBUgU Received: from unknown (HELO mal769a60aa920) ([89.242.31.171]) by ttsmtp.cpwnetworks.com with SMTP; 06 Jul 2009 17:35:51 +0100 Message-ID: <003501c9fe57$d2e5dfa0$0301a8c0@mal769a60aa920> From: "mal hamilton" To: References: <001401c9fc9c$938f2760$0301a8c0@mal769a60aa920> <006b01c9fd86$2acc8020$0301a8c0@mal769a60aa920> Date: Mon, 6 Jul 2009 17:35:48 +0100 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.2180 X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,HTML_MESSAGE=0.001 Subject: LF: Re: Re: Re: Re: Mc Coy Content-Type: multipart/alternative; boundary="----=_NextPart_000_0032_01C9FE60.330DD5B0" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.8 required=5.0 tests=HTML_30_40,HTML_MESSAGE 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 ------=_NextPart_000_0032_01C9FE60.330DD5B0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Hi Mark As u say it does not move much only a few Hz. This is a pity because= it would make a nice osc for mf divided down. tnx for ur observations de mal/g3kev ----- Original Message -----=20 From: Mark=20 To: rsgb_lf_group@blacksheep.org=20 Sent: Sunday, July 05, 2009 8:54 PM Subject: LF: Re: Re: Re: Mc Coy Mal, no problem, the info is indeed a bit limited about the Hz/V for the= adjustment. The data sheet seems to suggest that the control voltage is capable= of modulating the oscillator, which implies a fast slew rate. This is= not particularly good if you intend to just use the oscillator as a= fixed frequency source. It means you must filter the control voltage= better.=20 Of course using the source at low frequencies, none of the issues of= this type of source will manifest themselves significantly, but it is= probable that the performance of a microwave local oscillator locked= to one of these may be a bit noisy. To better understand the unit's characteristics, measure the frequen= cy at extremes of the control voltage range. That is about all the inf= ormation that is missing. most oscillators of this type have a fairly limited tuning range, so= you may find pulling the unit to your desired frequency on 500KHz is= not possible. To reach 505 KHz the oscillator must pull to 10.1MHz,= which is a large excursion for oscillators of this type 10 Hz in 10= MHz is 1ppm. 100KHz in 10 MHz is 10,000 PPM=20 Regards mark ----- Original Message -----=20 From: mal hamilton=20 To: rsgb_lf_group@blacksheep.org=20 Sent: Sunday, July 05, 2009 4:35 PM Subject: LF: Re: Re: Mc Coy Mark Osc fired up and working fb. I was looking for more detailed info= about ctl voltages ie V versus Freq. This unit is marked 10Mhz when= supplied with 5V ctl voltage, and this is spot on with 6v TTL output. 73 de mal/g3kev ----- Original Message -----=20 From: Mark=20 To: rsgb_lf_group@blacksheep.org=20 Sent: Saturday, July 04, 2009 1:37 PM Subject: LF: Re: Mc Coy 30 sec search on the internet http://www.datasheetarchive.com/pdf-datasheets/Datasheets-110/DS= AP004237.pdf Mark ----- Original Message -----=20 From: mal hamilton=20 To: rsgb=20 Sent: Saturday, July 04, 2009 12:42 PM Subject: LF: Mc Coy Hi all Does anyone have data for Mc Coy electronics XTAL OSCILLATOR= MC137X7-001W 10.000 MHz SN72758-126 This is a module and requires +5v, +15v sealed unit but has an= adjuster and I expect the osc can be shifted slightly, but enough to= be useful for 500 Khz divided down. 73 mal/g3kev ----------------------------------------------------------------------= -- No virus found in this incoming message. Checked by AVG - www.avg.com=20 Version: 8.5.375 / Virus Database: 270.13.3/2217 - Release Dat= e: 07/03/09 18:11:00 ----------------------------------------------------------------------= ---- No virus found in this incoming message. Checked by AVG - www.avg.com=20 Version: 8.5.375 / Virus Database: 270.13.3/2217 - Release Date:= 07/03/09 18:11:00 ----------------------------------------------------------------------= ------ No virus found in this incoming message. Checked by AVG - www.avg.com=20 Version: 8.5.375 / Virus Database: 270.13.4/2218 - Release Date:= 07/04/09 17:55:00 ----------------------------------------------------------------------= -------- No virus found in this incoming message. Checked by AVG - www.avg.com=20 Version: 8.5.375 / Virus Database: 270.13.5/2219 - Release Date: 07/= 05/09 05:53:00 ------=_NextPart_000_0032_01C9FE60.330DD5B0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Hi Mark
As u say it does not move much only= a few Hz. This=20 is a pity because it would make a nice osc for mf divided down.=
tnx for ur observations
de mal/g3kev
 
----- Original Message -----
From:=20 Mark
Sent: Sunday, July 05, 2009= 8:54 PM
Subject: LF: Re: Re: Re: Mc= Coy

Mal,
no problem, the info is indeed a bi= t limited=20 about the Hz/V for the adjustment.
The data sheet seems to suggest tha= t the=20 control voltage is capable of modulating the oscillator, which impli= es=20 a fast slew rate. This is not particularly good if you intend= to=20 just use the oscillator as a fixed frequency source. It means= you must=20 filter the control voltage better.
Of course using the source at low= frequencies,=20 none of the issues of this type of source will manifest themselves= =20 significantly, but it is probable that the performance of a microwav= e local=20 oscillator locked to one of these may be a bit noisy.
To better understand the unit'= s=20 characteristics, measure the frequency at extremes of the control vo= ltage=20 range. That is about all the information that is missing.
most oscillators of this type have= a fairly=20 limited tuning range, so you may find pulling the unit to your desir= ed=20 frequency on 500KHz is not possible.   To reach 505= KHz the=20 oscillator must pull to 10.1MHz, which is a large excursion for osci= llators of=20 this type 10 Hz in 10 MHz is 1ppm. 100KHz in 10 MHz  is 10,000= PPM=20
 
Regards
mark
----- Original Message -----
From:=20 mal=20 hamilton
Sent: Sunday, July 05, 2009= 4:35=20 PM
Subject: LF: Re: Re: Mc Coy=

Mark
Osc fired up and working fb. I wa= s looking for=20 more detailed info about ctl voltages ie V versus Freq. This= unit is=20 marked 10Mhz when supplied with 5V ctl voltage, and this is spot= on with 6v=20 TTL output.
73 de mal/g3kev
 
----- Original Message -----
From:=20 Mark
Sent: Saturday, July 04,= 2009 1:37=20 PM
Subject: LF: Re: Mc Coy

30 sec search on the internet
Mark
----- Original Message -----=
From:=20 mal=20 hamilton
To: rsgb
Sent: Saturday, July 04= , 2009 12:42=20 PM
Subject: LF: Mc Coy

Hi all
Does anyone have data for Mc= Coy=20 electronics XTAL OSCILLATOR MC137X7-001W 10.000 MHz
SN72758-126
This is a module and requires= +5v, +15v=20 sealed unit but has an adjuster and I expect the osc can be sh= ifted=20 slightly, but enough to be useful for 500 Khz divided down.
73 mal/g3kev
 


No virus found in this incoming message.
Checked= by AVG -=20 www.avg.com
Version: 8.5.375 / Virus Database: 270.13.3/22= 17 -=20 Release Date: 07/03/09 18:11:00


No virus found in this incoming message.
Checked= by AVG -=20 www.avg.com
Version: 8.5.375 / Virus Database: 270.13.3/2217= - Release=20 Date: 07/03/09 18:11:00


No virus found in this incoming message.
Checked by= AVG -=20 www.avg.com
Version: 8.5.375 / Virus Database: 270.13.4/2218= - Release=20 Date: 07/04/09 17:55:00


No virus found in this incoming message.
Checked by AV= G -=20 www.avg.com
Version: 8.5.375 / Virus Database: 270.13.5/2219 -= Release=20 Date: 07/05/09 05:53:00
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