Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-mg01.r1000.mx.aol.com (Internet Inbound) with ESMTP id A50F93800008D; Thu, 31 May 2012 17:18:31 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1SaCkG-0006pl-Lp for rs_out_1@blacksheep.org; Thu, 31 May 2012 22:17:24 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1SaCkF-0006pc-WC for rsgb_lf_group@blacksheep.org; Thu, 31 May 2012 22:17:23 +0100 Received: from mailout-de.gmx.net ([213.165.64.22]) by relay1.thorcom.net with smtp (Exim 4.77) (envelope-from ) id 1SaCkD-0005qB-HB for rsgb_lf_group@blacksheep.org; Thu, 31 May 2012 22:17:22 +0100 Received: (qmail invoked by alias); 31 May 2012 21:17:18 -0000 Received: from p4FEDA8D1.dip.t-dialin.net (EHLO Clemens04) [79.237.168.209] by mail.gmx.net (mp004) with SMTP; 31 May 2012 23:17:18 +0200 X-Authenticated: #17214767 X-Provags-ID: V01U2FsdGVkX18i+08g1XciJzty0EQl0fiyDz36YarOqog1kJwgK0 lha5BOph71VpnU Message-ID: <32ff01cd3f72$c2ac8440$1502a8c0@Clemens04> From: "Clemens Paul" To: References: <8BE4322932454ABBAF36917E7F0B7293@uwePC> <4FC74C16.1050905@iup.uni-heidelberg.de> <034701cd3f1d$b69fa650$1502a8c0@Clemens04> <4FC7596E.4070806@iup.uni-heidelberg.de> <63351021B87046C482A1433665C54902@uwePC> <000d01cd3f47$8f89e7e0$0401a8c0@xphd97xgq27nyf> <00d801cd3f50$21f1a2f0$1502a8c0@Clemens04> <002301cd3f5c$ebdfb460$0401a8c0@xphd97xgq27nyf> Date: Thu, 31 May 2012 23:16:42 +0200 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.3664 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3664 X-Y-GMX-Trusted: 0 X-Spam-Score: -0.0 (/) 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: Jay has does a great job - technically and how he shares his experise with the amateur community. And he is modest though. 73 Clemens DL4RAJ ----- Original Message ----- From: mal hamilton To: Thursday, May 31, 2012 8:40 PM Subject: LF: Re: Re: Re: Re: 475 kc Exiter /JUMA [...] Content analysis details: (-0.0 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at http://www.dnswl.org/, no trust [213.165.64.22 listed in list.dnswl.org] 0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail provider (cpaul[at]gmx.net) -0.0 T_RP_MATCHES_RCVD Envelope sender domain matches handover relay domain -0.0 SPF_PASS SPF: sender matches SPF record 0.0 HTML_MESSAGE BODY: HTML included in message X-Scan-Signature: 58889345c4cbcb55d17ea63c4983eff0 Subject: LF: Re: Re: Re: Re: Re: 475 kc Exiter /JUMA Content-Type: multipart/alternative; boundary="----=_NextPart_000_32F9_01CD3F83.707369D0" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: * X-Spam-Status: No, hits=1.8 required=5.0 tests=HTML_30_40,HTML_MESSAGE, NO_COST 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-SCOLL-SCORE: 1:2:503947712:93952408 X-AOL-SCOLL-URL_COUNT: 1 x-aol-sid: 3039ac1d60c94fc7e0262d30 X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none This is a multi-part message in MIME format. ------=_NextPart_000_32F9_01CD3F83.707369D0 Content-Type: text/plain; charset="Windows-1252" Content-Transfer-Encoding: 8bit Jay has does a great job - technically and how he shares his experise with the amateur community. And he is modest though. 73 Clemens DL4RAJ ----- Original Message ----- From: mal hamilton To: rsgb_lf_group@blacksheep.org Sent: Thursday, May 31, 2012 8:40 PM Subject: LF: Re: Re: Re: Re: 475 kc Exiter /JUMA What do you think of the CMCS es VMCD pa designs recently discussed here. These amp designs could be built in an afternoon and not cost a fortune I wonder if UWE has seen these postings? de g3kev ----- Original Message ----- From: Clemens Paul To: rsgb_lf_group@blacksheep.org Sent: Thursday, May 31, 2012 5:09 PM Subject: LF: Re: Re: Re: 475 kc Exiter /JUMA Mal, in which sense do you think is your mail helpful for Uwe or other list members? Instead of ad nauseum repeated emails from you bragging with your home brewing and CW skills,your antennas,etc.we would like to see mails from you containing some possibly useful information for the list members 73 Clemens DL4RAJ ----- Original Message ----- From: mal hamilton To: rsgb_lf_group@blacksheep.org Sent: Thursday, May 31, 2012 6:08 PM Subject: LF: Re: Re: 475 kc Exiter /JUMA Uwe I could build the same specification 60w rig for NO cost out of my junk box hi. The rig seems expensive for a kit and only 60 watts The Ropex 130 w rig for 136 Khz was less than £200 new and already built, even that was expensive. I built a 1Kw rig for almost nothing out of my junk box and still have after many years. I also have a couple of MF marine transmitters suitable for 500 lying in my garage !! de mal/g3kev ----- Original Message ----- From: Uwe Wensauer To: rsgb_lf_group@blacksheep.org Sent: Thursday, May 31, 2012 3:10 PM Subject: LF: Re: 475 kc Exiter /JUMA Hi, here is the bill for my new JUMA TX500 Subtotal: 299.00€ Postage & Packaging: 26.00€ Tax: 68.77€ Grand Total: 393.77€ I´s by the way the 3rd kit I am building ( all bevore where built for others ..) but thats for my self .. Uwe DK1KQ From: Stefan Schäfer Sent: Thursday, May 31, 2012 1:43 PM To: rsgb_lf_group@blacksheep.org Subject: Re: LF: 475 kc Exiter /JUMA Hi Clemens, Oh, OK. But anyway it was a very good hint to mention the JUMA 500 TX since it leads me to the CMCD design and this paper which nicely describes the problem of the VMCD desgin which i am trying in my first tests. The output C of the FETs is the problem. Since i want to have a relatively high power (100W) at 12V DC, the primary impedance is very low. So i have to use FETs with a very low on-resistance, ideally as low as possible of course. To find them is no problem (e.g. IRFP4368), but the output C is much to high then. I tried a IRZF48N (2 of them of course) as a compromise between RDSon and Cout but am just getting 60% efficiency at 70W in the first attempt. That's not acceptable for a /p PA that has to stay compact, i.e. without a big heat sink and/or a fan... The basics are well explained in this paper, makes fun to read :-) 73, Stefan/DK7FC Am 31.05.2012 13:08, schrieb Clemens Paul: It costs 300 Euro which is not to much. Unfortunately you have to add 23%VAT tax within EU and shipping costs which I estimate to 30-40 Euro. So we end up somewhere around 400 Euro. Interesting kit,though. 73 Clemens DL4RAJ E-Mail ist virenfrei. Von AVG überprüft - www.avg.de Version: 2012.0.2178 / Virendatenbank: 2425/5036 - Ausgabedatum: 31.05.2012 E-Mail ist virenfrei. Von AVG überprüft - www.avg.de Version: 2012.0.2178 / Virendatenbank: 2425/5036 - Ausgabedatum: 31.05.2012 ------=_NextPart_000_32F9_01CD3F83.707369D0 Content-Type: text/html; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable
Jay has does a great job - technically = and how=20 he shares his
experise with the amateur = community.
And he is modest = though.
 
73
Clemens
DL4RAJ 
----- Original Message -----
From:=20 mal=20 hamilton
Sent: Thursday, May 31, 2012 = 8:40=20 PM
Subject: LF: Re: Re: Re: Re: = 475 kc=20 Exiter /JUMA

What do you think of the CMCS es VMCD pa = designs=20 recently discussed here. These amp designs could be built in an = afternoon and=20 not cost a fortune
I wonder if UWE has seen these = postings?
de g3kev
 
----- Original Message -----
From:=20 Clemens = Paul
To: rsgb_lf_group@blacksheep.org= =20
Sent: Thursday, May 31, 2012 = 5:09=20 PM
Subject: LF: Re: Re: Re: 475 = kc Exiter=20 /JUMA

Mal,
 
in which sense do you think is your = mail helpful for Uwe or other list members?
Instead of ad nauseum = repeated emails=20 from you bragging with your home brewing
and CW skills,your antennas,etc.we would like to see mails from=20 you containing
some possibly useful information = for the list=20 members
 
 
 
73
Clemens
DL4RAJ
----- Original Message ----- =
From:=20 mal=20 hamilton
To: rsgb_lf_group@blacksheep.org= =20
Sent: Thursday, May 31, = 2012 6:08=20 PM
Subject: LF: Re: Re: 475 kc = Exiter=20 /JUMA

Uwe
I could build the same specification 60w = rig for NO=20 cost out of my junk box hi. The rig seems expensive for a kit and = only 60=20 watts
The Ropex 130 w rig for 136 Khz was less=20 than =A3200 new and already built, even that was expensive. I = built a=20 1Kw rig for almost nothing out of my junk box and still have = after=20 many years.
I also have a couple of MF marine = transmitters=20 suitable for 500 lying in my garage !!
de mal/g3kev
 
----- Original Message ----- =
From:=20 Uwe=20 Wensauer
To: rsgb_lf_group@blacksheep.org= =20
Sent: Thursday, May 31, = 2012 3:10=20 PM
Subject: LF: Re: 475 kc = Exiter=20 /JUMA

Hi,
here is the  bill for my new JUMA TX500
 
Subtotal: = 299.00=80
Postage &=20 Packaging: 26.00=80
Tax: 68.77=80
Grand Total: = 393.77=80
 
I=B4s by the way the 3rd kit = I am=20 building ( all bevore where built for others ..) but thats for = my self=20 ..
 
Uwe DK1KQ

 
From: Stefan = Sch=E4fer=20
Sent: Thursday, May 31, 2012 1:43 PM
Subject: Re: LF: 475 kc Exiter = /JUMA
 
Hi=20 Clemens,

Oh, OK. But anyway it was a very good hint to = mention=20 the JUMA 500 TX since it leads me to the CMCD design and this = paper=20 which nicely describes the problem of the VMCD desgin which i am = trying=20 in my first tests.
The output C of the FETs is the problem. = Since i=20 want to have a relatively high power (100W) at 12V DC, the = primary=20 impedance is very low. So i have to use FETs with a very low=20 on-resistance, ideally as low as possible of course. To find = them is no=20 problem (e.g. IRFP4368),=20 but the output C is much to high then. I tried a IRZF48N (2 of = them of=20 course) as a compromise between RDSon and Cout but am just = getting 60%=20 efficiency at 70W in the first attempt. That's not acceptable = for a /p=20 PA that has to stay compact, i.e. without a big heat sink and/or = a=20 fan...

The basics are well explained in this paper, makes = fun to=20 read :-)

73, Stefan/DK7FC

Am 31.05.2012 13:08, = schrieb=20 Clemens Paul:=20
It costs 300 Euro which is not to = much.=20

Unfortunately you have to add 23%VAT tax = within=20 EU and shipping costs
which I estimate to 30-40 Euro. =
So we=20 end up somewhere around 400 Euro.
Interesting kit,though.=20

73
Clemens
DL4RAJ=20


E-Mail ist = virenfrei.
Von AVG=20 =FCberpr=FCft - www.avg.de
Version:=20 2012.0.2178 / Virendatenbank: 2425/5036 - Ausgabedatum: 31.05.2012 =

E-Mail ist = virenfrei.
Von AVG=20 =FCberpr=FCft - www.avg.de
Version: 2012.0.2178=20 / Virendatenbank: 2425/5036 - Ausgabedatum: 31.05.2012=20

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