Return-Path: X-Spam-DCC: paranoid 1169; Body=2 Fuz1=2 Fuz2=2 X-Spam-Checker-Version: SpamAssassin 3.1.3 (2006-06-01) on lipkowski.org X-Spam-Level: X-Spam-Status: No, score=-0.7 required=5.0 tests=BAYES_00,DNS_FROM_AHBL_RHSBL, HTML_MESSAGE,RATWARE_GECKO_BUILD autolearn=no version=3.1.3 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by paranoid.lipkowski.org (8.13.7/8.13.7) with ESMTP id t0VIcHBG003647 for ; Sat, 31 Jan 2015 19:38:17 +0100 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1YHcnz-0005yJ-IJ for rs_out_1@blacksheep.org; Sat, 31 Jan 2015 18:30:03 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1YHcnz-0005yA-4Z for rsgb_lf_group@blacksheep.org; Sat, 31 Jan 2015 18:30:03 +0000 Received: from mail-we0-f178.google.com ([74.125.82.178]) by relay1.thorcom.net with esmtps (TLSv1:DHE-RSA-AES256-SHA:256) (Exim 4.85) (envelope-from <73dk7fc@googlemail.com>) id 1YHcnw-0008Cp-RY for rsgb_lf_group@blacksheep.org; Sat, 31 Jan 2015 18:30:02 +0000 Received: by mail-we0-f178.google.com with SMTP id k48so32355964wev.9 for ; Sat, 31 Jan 2015 10:29:58 -0800 (PST) X-DKIM-Result: Domain=googlemail.com Result=Good and Known Domain DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=googlemail.com; s=20120113; h=from:message-id:date:user-agent:mime-version:to:subject:references :in-reply-to:content-type; bh=4UWyoqAUumBxYHUaQkoM202bISqXxgyIFc+nUSenUjY=; b=SiK/2YinzDAFpYX9biQCPEhUd0a+RapeTfQJpMzVT5BrV+aEZlVDSW6W6W0QxVfeUf woxIz/k8tFAeliqTxeb9/MCY0aicrL4LtWoCrO0ayUvLY4GgEr2uVgSzCksYxWKVP5IE XRpckqnoi1Q8Rwkusb6gIriHhShDZvAqtcU5UM2R14VEcwJ5uJia95VB1cLbHyKLIKMC upgeM81ed/3hGqamemq9vMcEJWQw+3aDRW4AHol6vQqzq7zJx225eJl3gcl45tRgKJ7u dXGlkIapDIZI2baU5pP2+YYfcUfHBOZS33VKPCldP1yiqx6MGxsj+E/34E6BLs1Q399r tICA== X-Received: by 10.194.57.43 with SMTP id f11mr24743055wjq.6.1422728997750; Sat, 31 Jan 2015 10:29:57 -0800 (PST) Received: from [129.206.22.206] (pc206.iup.uni-heidelberg.de. [129.206.22.206]) by mx.google.com with ESMTPSA id da2sm20225589wjb.21.2015.01.31.10.29.56 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Sat, 31 Jan 2015 10:29:57 -0800 (PST) From: DK7FC <73dk7fc@googlemail.com> X-Google-Original-From: DK7FC <73dk7fc@gmail.com> Message-ID: <54CD1F23.8070200@gmail.com> Date: Sat, 31 Jan 2015 19:29:55 +0100 User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; de; rv:1.9.1.8) Gecko/20100227 Thunderbird/3.0.3 MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org References: <1422700500.59551.YahooMailBasic@web173003.mail.ir2.yahoo.com> <54CCFD4F.7010601@kabelmail.de> In-Reply-To: <54CCFD4F.7010601@kabelmail.de> X-Scan-Signature: 3d5b8cd6516ff44ac46de53952029be0 Subject: Re: LF: LF/MF TXing for Kenwood TS950SD and TS50 Content-Type: multipart/alternative; boundary="------------000801030201060204050605" 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-Scanned-By: MIMEDefang 2.56 on 10.1.3.10 Status: O X-Status: X-Keywords: X-UID: 2201 This is a multi-part message in MIME format. --------------000801030201060204050605 Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 8bit Hi Tom, What i don't understand: We've already been in QSO on LF and MF. So you are already QRV. So why do you want to build such a complex, heavy, big and power consuming system to drive the PA? I would understand if you need something else than a big HF TRX plus additional divider circuit. Maybe a small compact VFO, power saving, for /p experiments. Or, have there been some housebreakers in your shack? All the best. Stefan Am 31.01.2015 17:05, schrieb DK1IS: > Hi Pete, > > thanks for the splendid idea - obviously I didīnt see the wood for the > trees, all the more everything needed for this approach is already in > use here! Iīve a switchable devider by 10 for MF and by 100 for LF > with my marine radio exciter Hagenuk EX1001. Indeed this unit could > bring out the frequencies directly but with a resolution of only 100 > Hz. So I let it run at 13.6 MHz resp. 4.73 MHz. DFCW is possible too > with suitable choosen F1B shifts in the base bands. > So all I have to do is changing the input of the devider from the > EX1001 to the full range TXing Kenwood sets (attenuator added ;-))! > WSPR and DFCW should be possible too in SSB mode with suitable AF > modulation. > Thanks for the PA schematic too - it will be useful for future > portable activities. > > Tu es 73, > Tom, DK1IS > > > Am 31.01.2015 um 11:35 schrieb M0FMT: >> Hi Tom >> >> Nice array of rigs I also own a TS50 plus a TS690s quite good on the RX side at M/LF the TS50 lacks the RX filtering of the other rig. >> >> My suggestion is build an GW3UEP TX but drive it with reduced power (the odd milliWatt) via divider chain from one of the rigs. That way you get the frequency stability and VFO agility (not that it is really needed) plus side tone etc from the rig by using split working. You will have to recalibrate your mind to the actual TX frequency depending upon the division quotient i.e /2 , /4 , /n etc. On RX read out would be direct of course.. Otherwise use a DDS as the TX exciter. (I use xtals). >> >> http://www.gw3uep.ukfsn.org/100W_QTX/100WTX/PA_cmos.gif >> >> http://www.gw3uep.ukfsn.org/100W_QTX/QuickView/Quick%20View%20100W%20QTX.htm >> >> There are also similar simple TX designs for 136. >> >> This suggestion does not give you linear operation and is not suitable for sound card modulation applications such as WSPR (just as well IMHO) it is only suitable for On / Off keying modes such as CW/ Very Slow CW QRSS/ Opera a form of CW/ NB direct shift RTTY/ Direct shift DFCW will work OK. >> >> Before I am corrected WSPR is possible but only via some jiggery pokery using a four direct frequency shift pattern. Clever Johan SM6LKM has cracked it. >> >> However some one on here may have done the modifications to the TS range but I have not heard about it myself. >> >> Good luck >> >> 73 es GL Pete M0FMT IO91UX >> >> >> -------------------------------------------- >> On Fri, 30/1/15, DK1IS wrote: >> >> Subject: LF: LF/MF TXing for Kenwood TS950SD and TS50 >> To:rsgb_lf_group@blacksheep.org >> Date: Friday, 30 January, 2015, 16:28 >> >> Hello Group, >> >> are there any experiences with extendig the TX range of >> these Kenwood >> radios down to MF and LF? Long time ago Iīve already done >> the usual >> extensions for general TX coverage within 1.7 to 30 MHz by >> cutting some >> diodes but up to now I canīt find any modifications for >> MF/LF. With the >> TS950SD it possibly could be restricted to the driver >> output. Any ideas? >> >> Thanks and 73, >> Tom, DK1IS >> www.qrz.com/db/dk1is >> >> >> >> >> . >> >> > --------------000801030201060204050605 Content-Type: text/html; charset=windows-1252 Content-Transfer-Encoding: 8bit Hi Tom,

What i don't understand: We've already been in QSO on LF and MF. So you are already QRV. So why do you want to build such a complex, heavy, big and power consuming system to drive the PA?
I would understand if you need something else than a big HF TRX plus additional divider circuit. Maybe a small compact VFO, power saving, for /p experiments.
Or, have there been some housebreakers in your shack?

All the best.

Stefan


Am 31.01.2015 17:05, schrieb DK1IS:
Hi Pete,

thanks for the splendid idea - obviously I didīnt see the wood for the trees, all the more everything needed for this approach is already in use here! Iīve a switchable devider by 10 for MF and by 100 for LF with my marine radio exciter Hagenuk EX1001. Indeed this unit could bring out the frequencies directly but with a resolution of only 100 Hz. So I let it run at 13.6 MHz resp. 4.73 MHz. DFCW is possible too with suitable choosen F1B shifts in the base bands.
So all I have to do is changing the input of the devider from the EX1001 to the full range TXing Kenwood sets (attenuator added ;-))! WSPR and DFCW should be possible too in SSB mode with suitable AF modulation.
Thanks for the PA schematic too - it will be useful for future portable activities.

Tu es 73,
Tom, DK1IS


Am 31.01.2015 um 11:35 schrieb M0FMT:
Hi Tom

Nice array of rigs I also own a TS50 plus a TS690s quite good on the RX side at M/LF the TS50 lacks the RX filtering of the other rig.

My suggestion is build an GW3UEP TX but drive it with reduced power  (the odd milliWatt) via divider chain from one of the rigs. That way you get the frequency stability and VFO agility (not that it is really needed) plus side tone etc from the rig by using split working. You will have to recalibrate your mind to the actual TX frequency depending upon the division quotient i.e /2 , /4 , /n etc. On RX read out would be direct of course.. Otherwise use a DDS as the TX exciter. (I use xtals).

http://www.gw3uep.ukfsn.org/100W_QTX/100WTX/PA_cmos.gif

http://www.gw3uep.ukfsn.org/100W_QTX/QuickView/Quick%20View%20100W%20QTX.htm

There are also similar simple TX designs for 136.

This suggestion does not give you linear operation and is not suitable for sound card modulation applications such as WSPR (just as well IMHO) it is only suitable for  On / Off  keying modes such as CW/ Very Slow CW QRSS/ Opera a form of CW/ NB direct shift RTTY/ Direct shift DFCW  will work OK.

Before I am corrected WSPR is possible but only via some jiggery pokery using a four direct frequency shift pattern. Clever Johan SM6LKM has cracked it.

However some one on here may have done the modifications to the TS range but I have not heard about it myself.

Good luck

73 es GL Pete M0FMT IO91UX


--------------------------------------------
On Fri, 30/1/15, DK1IS <DK1IS@kabelmail.de> wrote:

 Subject: LF: LF/MF TXing for Kenwood TS950SD and TS50
 To: rsgb_lf_group@blacksheep.org
 Date: Friday, 30 January, 2015, 16:28
 
 Hello Group,
 
 are there any experiences with extendig the TX range of
 these Kenwood 
 radios down to MF and LF? Long time ago Iīve already done
 the usual 
 extensions for general TX coverage within 1.7 to 30 MHz by
 cutting some 
 diodes but up to now I canīt find any modifications for
 MF/LF. With the 
 TS950SD it possibly could be restricted to the driver
 output. Any ideas?
 
 Thanks and 73,
 Tom, DK1IS
 www.qrz.com/db/dk1is
 



.

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