Return-Path: Received: from mtain-da08.r1000.mx.aol.com (mtain-da08.r1000.mx.aol.com [172.29.64.80]) by air-md04.mail.aol.com (v129.4) with ESMTP id MAILINMD043-8b824cd6d9a330d; Sun, 07 Nov 2010 11:53:55 -0500 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-da08.r1000.mx.aol.com (Internet Inbound) with ESMTP id BD9BA38002280; Sun, 7 Nov 2010 11:45:30 -0500 (EST) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1PF8Lg-0006Ck-Ni for rs_out_1@blacksheep.org; Sun, 07 Nov 2010 16:44:08 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1PF8Lg-0006Cb-67 for rsgb_lf_group@blacksheep.org; Sun, 07 Nov 2010 16:44:08 +0000 Received: from mail-iw0-f171.google.com ([209.85.214.171]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1PF8Ld-00060j-BO for rsgb_lf_group@blacksheep.org; Sun, 07 Nov 2010 16:44:08 +0000 Received: by iwn38 with SMTP id 38so4557458iwn.16 for ; Sun, 07 Nov 2010 08:44:03 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=googlemail.com; s=gamma; h=domainkey-signature:mime-version:received:received:in-reply-to :references:date:message-id:subject:from:to:content-type; bh=4HXJ/K4g8JmWKgp+1ZRVTMy8ESPLIL9f4IRFngA/x6c=; b=ABskBeemFpPycPJ3NIP6tZBijzXBbxUXrrYnE30n120Z90cz6L/TMiDx9CHn4rIqY1 08ql6xiGoWZCcqcL6j3yhYDjYq1Uh6QwPM1234IPqthOZIV8xLUYwFURPI6r9tioDLkk 6Dywih397Yk91nPiinM2inddab/1zOaluj9PY= DomainKey-Signature: a=rsa-sha1; c=nofws; d=googlemail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type; b=UyMMwbvsVu0uH8TeLbdNEkMUk7GtlykiixFHLaEXhDDCCryRBxvG0+5xOnVktCHE41 6F4uMVFSMtk/DO8wc+cI3vnW2KZtHNF0DJi6cy3EfZGtEur5Is2pRvUHwQ50c+8Ir5Ty YmPxptZf8il8+tC1Gnnw0JBzOu80mnM0BnWO4= MIME-Version: 1.0 Received: by 10.42.243.70 with SMTP id ll6mr2691084icb.218.1289148241974; Sun, 07 Nov 2010 08:44:01 -0800 (PST) Received: by 10.231.79.69 with HTTP; Sun, 7 Nov 2010 08:44:01 -0800 (PST) In-Reply-To: <4CD690CA.7040807@wanadoo.fr> References: <000c01cb7da9$23b1a1e0$8d01a8c0@JAYDELL> <000d01cb7e30$2f5041f0$8d01a8c0@JAYDELL> <4CD6856F.7020802@wanadoo.fr> <4CD690CA.7040807@wanadoo.fr> Date: Sun, 7 Nov 2010 16:44:01 +0000 Message-ID: From: Andy Talbot To: rsgb_lf_group@blacksheep.org DomainKey-Status: good (testing) X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,HTML_MESSAGE=0.001 Subject: Re: LF: exciter for 137 and 500 kHz Content-Type: multipart/alternative; boundary=90e6ba6e870206938b049479371a 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-SCOLL-AUTHENTICATION: mail_rly_antispam_dkim-d256.1 ; domain : googlemail.com DKIM : pass x-aol-sid: 3039ac1d40504cd6d7aa7296 X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none X-Mailer: Unknown (No Version) --90e6ba6e870206938b049479371a Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Hi Xtian - No need, tnx. A copy arrived just now from another bad boy :-) Andy www.g4jnt.com On 7 November 2010 11:43, Jean-L. RAULT wrote: > 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 =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 Communicatio= ns >> 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 onl= y >>> 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 >>>> >>>> >>> >> > > --90e6ba6e870206938b049479371a Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable
Hi=A0Xtian -
=A0
No need, tnx.
A copy arrived just now from another bad boy :-)
=A0
On 7 November 2010 11:43, Jean-L. RAULT <f6agr@wanadoo.fr&= gt; wrote:
Andy

Christian is a bad= boy=A0 :o)

I'll scan and forward you tomorrow the english vers= ion of the DB2NP's article

Jean-Louis F6AGR




=

Le 07/11/2010 12:33, Andy Talbot a =E9crit=A0:=20
yes please.=A0=A0
=A0
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 yo= u a copy of the german UKW version=A0 !

If you need it . Says and= I do=A0 !


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

73


Xtian / F1VL


Le 07/11/2010 11:03, Andy Talbot= a =E9crit=A0:=20
Nice little prog - I'd love to see the source code :-)
=A0
Taken from that reference :-
"The calculations to derive the time constants and therefore= the 90 degree frequencies, and the component values, were based on equati= ons in the article by Dr. (Eng) Ralph Oppelt, DB2NP, published in VHF Comm= unications Volume No. 18, Summer, 2/1987."

Does anyone have back copies of VHF Comms ???

Andy
www.g4jnt.c= om


On 7 November 2010 03:59, <= ;jrusgrove@comc= ast.net> wrote:
Andy
=A0
It's been a while ...=A0but=A0bel= ieve I used this online calculator.
=A0
=A0
Jay
=A0
=A0
----- Original Message -----
From:= Andy Talbot
Sent: Saturday, November 06, 2010= 9:59 AM
Subject: Re: LF: exciter for 137 an= d 500 kHz

Very Interesting.=A0=A0
Where did you find the design data for=A0the allpass network?=A0=A0= I've only been able to find the values for up to 3+3 allpass stages.<= /div>
=A0
Mind you,=A0at that number of=A0chips a DSPic begins to look attracti= ve.
=A0
On 6 November 2010 11:52, <= ;jrusgrove@comc= ast.net> wrote:
Nothing earth sha= ttering ... another way to skin the cat. The 137 and 500 kHz units have be= en in use for a few years ... just now getting around to the write up.

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

Jay W1VD= =A0WD2XNS =A0WE2XGR/2


<= /div>

<= br>


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