Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-dd05.r1000.mx.aol.com (Internet Inbound) with ESMTP id D31393800008F; Sat, 25 Aug 2012 14:33:12 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1T5L9a-0000Ih-3R for rs_out_1@blacksheep.org; Sat, 25 Aug 2012 19:32:14 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1T5L9Z-0000IY-Hd for rsgb_lf_group@blacksheep.org; Sat, 25 Aug 2012 19:32:13 +0100 Received: from smtpa1.mediabeam.com ([194.25.41.13] helo=smtpa2.mediabeam.com) by relay1.thorcom.net with esmtps (TLSv1:AES256-SHA:256) (Exim 4.77) (envelope-from ) id 1T5L9W-0001PR-CM for rsgb_lf_group@blacksheep.org; Sat, 25 Aug 2012 19:32:12 +0100 Received: from IMAP3 (balancer7.mediabeam.com [10.100.1.80]) by smtpa2.mediabeam.com (8.13.8/8.13.1) with ESMTP id q7PIW817008952 for ; Sat, 25 Aug 2012 20:32:08 +0200 Received: from [192.168.178.33] (37-4-36-228-dynip.superkabel.de [37.4.36.228] (may be forged)) (authenticated bits=0) by smtpa.mediabeam.com (8.13.8/8.13.1) with ESMTP id q7PIW7ig011966 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Sat, 25 Aug 2012 20:32:08 +0200 X-mediaBEAM-Originating-IP: [37.4.36.228] X-mediaBEAM-AUTHID: [DK1IS@kabelmail.de] Message-ID: <50391A36.8000503@kabelmail.de> Date: Sat, 25 Aug 2012 20:32:22 +0200 From: DK1IS User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:14.0) Gecko/20120713 Thunderbird/14.0 MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org References: <5038EBED.50101@kabelmail.de> <001301cd82e1$aa0725a0$4201a8c0@marco09cqcdi12> In-Reply-To: <001301cd82e1$aa0725a0$4201a8c0@marco09cqcdi12> X-Spam-Score: -0.7 (/) X-Spam-Report: Spam detection software, running on the system "relay1.thorcom.net", has identified this incoming email as possible spam. The original message has been attached to this so you can view it (if it isn't spam) or label similar future email. If you have any questions, see the administrator of that system for details. Content preview: Hello Marco, modifying to general TX coverage results in a lowest TX QRG of 1620 kHz for the TS 950 and (heaven knows why) 1705 kHz for the TS 50. At lower frequencies there is no driver output so these modifications are no solution for MF/LF. But I hope someone knows a trick to override this behaviour. Concerning the TX stability of TS 950 SD: using the internal TXCO my unit is very stable however showing an absolute deviation of abt. +5 Hz at 30 MHz. I have improved it similar to you by using a 10 kHz GPS reference (Jupiter board) synchronizing the alternative low-cost Xtal-oscillator on board of the TS 950 whose stand alone stability is much worse than that from the TXCO. Certainly you know you have to change _two_ switches for activating the TXCO. [...] Content analysis details: (-0.7 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.7 RCVD_IN_DNSWL_LOW RBL: Sender listed at http://www.dnswl.org/, low trust [194.25.41.13 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record 0.0 HTML_MESSAGE BODY: HTML included in message X-Scan-Signature: bc223f74149f392a7d9f3881f05f1e70 Subject: Re: LF: Re: Modifications of Kenwood TS 950 SD and TS 50 S Content-Type: multipart/alternative; boundary="------------010305000404020203070507" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.5 required=5.0 tests=HTML_20_30,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-global-disposition: G x-aol-sid: 3039ac1d409150391a680133 X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none This is a multi-part message in MIME format. --------------010305000404020203070507 Content-Type: text/plain; charset=ISO-8859-15; format=flowed Content-Transfer-Encoding: 7bit Hello Marco, modifying to general TX coverage results in a lowest TX QRG of 1620 kHz for the TS 950 and (heaven knows why) 1705 kHz for the TS 50. At lower frequencies there is no driver output so these modifications are no solution for MF/LF. But I hope someone knows a trick to override this behaviour. Concerning the TX stability of TS 950 SD: using the internal TXCO my unit is very stable however showing an absolute deviation of abt. +5 Hz at 30 MHz. I have improved it similar to you by using a 10 kHz GPS reference (Jupiter board) synchronizing the alternative low-cost Xtal-oscillator on board of the TS 950 whose stand alone stability is much worse than that from the TXCO. Certainly you know you have to change _two_ switches for activating the TXCO. Tu, 73 es cuagn Tom, DK1IS Am 25.08.2012 18:49, schrieb Marco Cadeddu: > Hello Tom, > although the TS950SD is in my my shack since 1991..I never made the > modification for general tx coverage. I don't think it can transmit on > 500 kHz if you carry out the mod, but probably could be used as > starting point unplugging the rear connection between driver and PA > and replacing with a devoted external PA (I'm using this rig in such > way to drive an external 137 kHz xvtr). > Just for info, I was disappointed about the frequency stability of > TS950SD: a rock in reception (both direct on 137k or via the xvtr on > the 10 MHz band) but on tx, although the PA was cutted out, not > suitable for qrss with several Hz of drift...now I found a a 10MHz Rb > oscillator that is used for LO on the xvrt and divided to 10 kHz to > control the PLL via the rear input. > Let me know if you get a useful signal from the drive out socket on > 470kHz. > 73 de Marco. IK1HSS > > ----- Original Message ----- > *From:* DK1IS > *To:* rsgb_lf_group@blacksheep.org > > *Sent:* Saturday, August 25, 2012 3:14 PM > *Subject:* LF: Modifications of Kenwood TS 950 SD and TS 50 S > > Hello dear LF-group, > > does anyone have proven experiences about > > * modification of TS 950 SD for transmitting CW on MF, perhaps > LF too ("general coverage transmission" already realized) > * the same for TS 50 S, > * overriding the permanent ALC at TS 50 S ? > > As usual, there were no answers on my inquiries to Kenwood - > neither from the German office nor from Japan ;-) > > Tu es 73, > Tom, DK1IS > --------------010305000404020203070507 Content-Type: text/html; charset=ISO-8859-15 Content-Transfer-Encoding: quoted-printable X-MIME-Autoconverted: from 8bit to quoted-printable by smtpa.mediabeam.com id q7PIW7ig011966
Hello Marco,

modifying to general TX coverage results in a lowest TX QRG of 1620 kHz for the TS 950 and (heaven knows why) 1705 kHz for the TS 50.=A0 At lower frequencies there is no driver output so these modifications are no solution for MF/LF.=A0 But I hope someone know= s a trick to override this behaviour.
Concerning the TX stability of TS 950 SD: using the internal TXCO my unit is very stable however showing an absolute deviation of abt. +5 Hz at 30 MHz. I have improved it similar to you by using a 10 kHz GPS reference (Jupiter board) synchronizing the alternative low-cost Xtal-oscillator on board of the TS 950 whose stand alone stability is much worse than that from the TXCO. Certainly you know you have to change two switches for activating the TXCO.

Tu, 73 es cuagn
Tom, DK1IS


Am 25.08.2012 18:49, schrieb Marco Cadeddu:
Hello Tom,
=A0
although the TS950SD is in my = my shack since 1991..I never made the modification for general tx coverage. I don't think it can transmit on 500 kHz if you carry out the mod, but probably could be used as starting point unplugging the rear connection between driver and PA and replacing with a devoted external PA (I'm using this rig in such way to drive an external 137 kHz xvtr).
Just for info, I was disappoin= ted about the frequency stability of TS950SD: a rock in reception (both direct on 137k or via the xvtr on the 10 MHz band) but on tx, although the PA was cutted out, not suitable for qrss with several Hz of drift...now I found a a 10MHz Rb oscillator that is used for LO on the xvrt and divided to 10 kHz to control the PLL via the rear input.
=A0
Let me know if you get a usefu= l signal from the drive out socket on 470kHz.
=A0
73 de Marco. IK1HSS
----- Original Message -----
From: DK1IS
Sent: Saturday, August 25, 2012 3:14 PM
Subject: LF: Modifications of Kenwood TS 950 SD and TS 50 S

Hello dear LF-group,

does anyone have proven experiences about
  • modification of TS 950 SD for transmitting CW on MF, perhaps LF too ("general coverage transmission" already realized)
  • the same for TS 50 S,
  • overriding the permanent ALC at TS 50 S ?
As usual, there were no answers on my inquiries to Kenwood - neither from the German office nor from Japan ;-)

Tu es 73,
Tom, DK1IS

--------------010305000404020203070507--