Return-Path: Received: from mtain-ma10.r1000.mx.aol.com (mtain-ma10.r1000.mx.aol.com [172.29.96.18]) by air-dc10.mail.aol.com (v129.4) with ESMTP id MAILINDC104-86a84cd686847; Sun, 07 Nov 2010 05:59:16 -0500 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-ma10.r1000.mx.aol.com (Internet Inbound) with ESMTP id 4E5E7380000AA; Sun, 7 Nov 2010 05:56:06 -0500 (EST) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1PF2ta-0003uA-Ot for rs_out_1@blacksheep.org; Sun, 07 Nov 2010 10:54:46 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1PF2ta-0003tw-48 for rsgb_lf_group@blacksheep.org; Sun, 07 Nov 2010 10:54:46 +0000 Received: from smtp20.orange.fr ([80.12.242.26]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1PF2tX-0003ic-OA for rsgb_lf_group@blacksheep.org; Sun, 07 Nov 2010 10:54:46 +0000 Received: from me-wanadoo.net (localhost [127.0.0.1]) by mwinf2018.orange.fr (SMTP Server) with ESMTP id 283F320002EF for ; Sun, 7 Nov 2010 11:54:38 +0100 (CET) Received: from me-wanadoo.net (localhost [127.0.0.1]) by mwinf2018.orange.fr (SMTP Server) with ESMTP id 19A352000448 for ; Sun, 7 Nov 2010 11:54:38 +0100 (CET) Received: from [192.168.1.15] (AToulouse-151-1-64-121.w81-250.abo.wanadoo.fr [81.250.86.121]) by mwinf2018.orange.fr (SMTP Server) with ESMTP id BD83520002EF for ; Sun, 7 Nov 2010 11:54:37 +0100 (CET) X-ME-UUID: 20101107105437776.BD83520002EF@mwinf2018.orange.fr X-ME-User-Auth: cricri.f1vl Message-ID: <4CD6856F.7020802@wanadoo.fr> Date: Sun, 07 Nov 2010 11:54:39 +0100 From: cricri 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> 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="------------040405070503070609050003" 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_40_50,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: 3039ac1d60124cd685c628dd X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none X-Mailer: Unknown (No Version) --------------040405070503070609050003 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: quoted-printable 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 deg= ree frequencies, and the component values,=20 > were based on equations in the article by Dr. (Eng) Ralph Oppelt, DB2NP,= published in VHF Communications Volume No.=20 > 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 attract= ive. > > Andy > www.g4jnt.com > > > On 6 November 2010 11:52, > wrote: > > Nothing earth shattering ... another way to skin the cat. Th= e 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 > > > --------------040405070503070609050003 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit 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



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