Return-Path: Received: from mtain-df03.r1000.mx.aol.com (mtain-df03.r1000.mx.aol.com [172.29.64.215]) by air-me06.mail.aol.com (v129.4) with ESMTP id MAILINME063-8bb64cd69124294; Sun, 07 Nov 2010 06:44:36 -0500 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-df03.r1000.mx.aol.com (Internet Inbound) with ESMTP id A85793800009C; Sun, 7 Nov 2010 06:44:34 -0500 (EST) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1PF3ea-0004Iz-1Y for rs_out_1@blacksheep.org; Sun, 07 Nov 2010 11:43:20 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1PF3eZ-0004Ip-HD for rsgb_lf_group@blacksheep.org; Sun, 07 Nov 2010 11:43:19 +0000 Received: from smtp20.orange.fr ([80.12.242.26]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1PF3eV-00042K-WB for rsgb_lf_group@blacksheep.org; Sun, 07 Nov 2010 11:43:19 +0000 Received: from me-wanadoo.net (localhost [127.0.0.1]) by mwinf2002.orange.fr (SMTP Server) with ESMTP id 956DE2000731 for ; Sun, 7 Nov 2010 12:43:10 +0100 (CET) Received: from me-wanadoo.net (localhost [127.0.0.1]) by mwinf2002.orange.fr (SMTP Server) with ESMTP id 87352200074D for ; Sun, 7 Nov 2010 12:43:10 +0100 (CET) Received: from [127.0.0.1] (AMontsouris-754-1-2-25.w86-212.abo.wanadoo.fr [86.212.25.25]) by mwinf2002.orange.fr (SMTP Server) with ESMTP id EFC992000731 for ; Sun, 7 Nov 2010 12:43:09 +0100 (CET) X-ME-UUID: 20101107114309982.EFC992000731@mwinf2002.orange.fr X-ME-User-Auth: f6agr Message-ID: <4CD690CA.7040807@wanadoo.fr> Date: Sun, 07 Nov 2010 12:43:06 +0100 From: "Jean-L. RAULT" User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.0; fr; rv:1.9.2.12) Gecko/20101027 Thunderbird/3.1.6 MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org References: <000c01cb7da9$23b1a1e0$8d01a8c0@JAYDELL> <000d01cb7e30$2f5041f0$8d01a8c0@JAYDELL> <4CD6856F.7020802@wanadoo.fr> In-Reply-To: X-Spam-Score: 1.4 (+) X-Spam-Report: autolearn=disabled,HTML_MESSAGE=0.001,RATWARE_GECKO_BUILD=1.426 Subject: Re: LF: exciter for 137 and 500 kHz Content-Type: multipart/alternative; boundary="------------000303050604010409080901" 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-global-disposition: G x-aol-sid: 3039ac1d40d74cd691221e7d X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none X-Mailer: Unknown (No Version) --------------000303050604010409080901 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: quoted-printable Andy Christian is a bad boy :o) I'll scan and forward you tomorrow the english version of the DB2NP's=20 article Jean-Louis F6AGR Le 07/11/2010 12:33, Andy Talbot a =E9crit : > yes please. > May even help my rusty - learnt-at-evening-class German > > Andy > www.g4jnt.com > > > On 7 November 2010 10:54, cricri > wrote: > > Hello Andy , > I'll send you a copy of the german UKW version ! > > If you need it . Says and I do ! > > > Formulas are same ... :-) :-) :-) > > 73 > > > Xtian / F1VL > > > Le 07/11/2010 11:03, Andy Talbot a =E9crit : >> Nice little prog - I'd love to see the source code :-) >> Taken from that reference :- >> "/The calculations to derive the time constants and therefore the >> 90 degree frequencies, and the component values, were based on >> equations in the article by Dr. (Eng) Ralph Oppelt, DB2NP, >> published in VHF Communications Volume No. 18, Summer, 2/1987./" >> >> Does anyone have back copies of VHF Comms ??? >> >> Andy >> www.g4jnt.com >> >> >> On 7 November 2010 03:59, > > wrote: >> >> Andy >> It's been a while ... but believe I used this online calculator= . >> http://www.werewoolf.org.je/apf.htm >> Jay >> >> ----- Original Message ----- >> *From:* Andy Talbot >> *To:* rsgb_lf_group@blacksheep.org >> >> *Sent:* Saturday, November 06, 2010 9:59 AM >> *Subject:* Re: LF: exciter for 137 and 500 kHz >> >> Very Interesting. >> Where did you find the design data for the allpass >> network? I've only been able to find the values for up >> to 3+3 allpass stages. >> Mind you, at that number of chips a DSPic begins to look >> attractive. >> >> Andy >> www.g4jnt.com >> >> >> On 6 November 2010 11:52, > > wrote: >> >> Nothing earth shattering ... another way to skin the >> cat. The 137 and 500 kHz units have been in use for a >> few years ... just now getting around to the write up. >> >> http://www.w1vd.com/137-500Phasingexciter.html >> >> Jay W1VD WD2XNS WE2XGR/2 >> >> >> > --------------000303050604010409080901 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Andy

Christian is a bad boy  :o)

I'll scan and forward you tomorrow the english version of the DB2NP's article

Jean-Louis F6AGR






Le 07/11/2010 12:33, Andy Talbot a écrit :
yes please.  
 
May even help my rusty - learnt-at-evening-class German
On 7 November 2010 10:54, cricri <cricri.f1vl@wanadoo.fr> wrote:
Hello Andy ,
I'll send you a copy of the german UKW version  !

If you need it . Says and I do  !


Formulas are same ... :-) :-) :-)

73


Xtian / F1VL


Le 07/11/2010 11:03, Andy Talbot a écrit :
Nice little prog - I'd love to see the source code :-)
 
Taken from that reference :-
"The calculations to derive the time constants and therefore the 90 degree frequencies, and the component values, were based on equations in the article by Dr. (Eng) Ralph Oppelt, DB2NP, published in VHF Communications Volume No. 18, Summer, 2/1987."

Does anyone have back copies of VHF Comms ???

Andy
www.g4jnt.com


On 7 November 2010 03:59, <jrusgrove@comcast.net> wrote:
Andy
 
It's been a while ... but believe I used this online calculator.
 
 
Jay
 
 
----- Original Message -----
Sent: Saturday, November 06, 2010 9:59 AM
Subject: Re: LF: exciter for 137 and 500 kHz

Very Interesting.  
Where did you find the design data for the allpass network?   I've only been able to find the values for up to 3+3 allpass stages.
 
Mind you, at that number of chips a DSPic begins to look attractive.
 
On 6 November 2010 11:52, <jrusgrove@comcast.net> wrote:
Nothing earth shattering ... another way to skin the cat. The 137 and 500 kHz units have been in use for a few years ... just now getting around to the write up.

http://www.w1vd.com/137-500Phasingexciter.html

Jay W1VD  WD2XNS  WE2XGR/2





--------------000303050604010409080901--