Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by klubnl.pl (8.14.4/8.14.4/Debian-8+deb8u2) with ESMTP id w18JUBaL027975 for ; Thu, 8 Feb 2018 20:30:14 +0100 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1ejroi-0004QO-He for rs_out_1@blacksheep.org; Thu, 08 Feb 2018 19:25:08 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1ejrog-0004QF-Qb for rsgb_lf_group@blacksheep.org; Thu, 08 Feb 2018 19:25:06 +0000 Received: from mail-wm0-x22c.google.com ([2a00:1450:400c:c09::22c]) by relay1.thorcom.net with esmtps (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.89) (envelope-from ) id 1ejroc-0001xH-0q for rsgb_lf_group@blacksheep.org; Thu, 08 Feb 2018 19:25:05 +0000 Received: by mail-wm0-x22c.google.com with SMTP id j21so804769wmh.1 for ; Thu, 08 Feb 2018 11:25:01 -0800 (PST) X-DKIM-Result: Domain=gmail.com Result=Good and Known Domain DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :cc; bh=5K0G/kkLR52IrinEL2QRcofwKNT+apRYE2gARbUGsgY=; b=mm1uiAnCrft5MJ5Vbo1fAGWSCafO5ARjAs9neWhozQ52VkImTFSjZK9JLMhZERhlck vaZF7Oxq2Dc5bdl4SMCdRlVa8iMiWN8UFkAQvYpr5aziHckKMRcTOUP+R2xGYoKVE8or RAw7Q4eaOMKI2Vpt4mUYQYNv7pTnJJ+Uvki4ZvQPoAIQRLu7rDymVLgpPsNO8r/HIO2+ V5oT58+S1TyJDM5wEYbfNgTHjk+yTAcIlQsUIvQkAPLJpALkzOZ/wbrROKSwILh6Ye4x fos30bsu3rwZuxnVZJlVqcP+kP4Rw6LGLouzoK0GgHoX9Sg0bulhDMi14VrEfgc9mpF7 Ldhg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:in-reply-to:references:from:date :message-id:subject:to:cc; bh=5K0G/kkLR52IrinEL2QRcofwKNT+apRYE2gARbUGsgY=; b=lTz7iNZxA0U2g/V6brfo8IP9Wu8exH4BuPWJOpcAMMJnSiAGCugy2OmfR+CToZFzA0 9pCBPZRNaDxrDZmTphBeyl8SeD4f9yvgHis+Mm8MkxGFlcvxpqUwU1NdJgIaYyBuf0Vy Dx4+kSiMrfPk5NITR0SAyV88WTMCx1nwx8Zy5YW0EkUn++0SKyQxw2VfTV4XC98Er6xh 3elYA7shW9+WcSnkkoyF9gu8WiUVsvofJhVRWWoRmHC0s5FsqiENnGDa8k2rvZRaiSvY u6ZK/gCm7ybxEtAwelxdeVGn/qNaePzgL637ZbsvPgqXC8/bZtd7mwlsIfGSAtGTMAaJ nzAg== X-Gm-Message-State: APf1xPByi3j7qSWRf0M8nA4zfcLWiOI8/W10mnGXeb18gLy8CaJdkZef NcSikmJIlZp87eG1Bk8wKQ5nFDCi4a8H225qULtbF4n5 X-Google-Smtp-Source: AH8x224QzvcZdoscopNGOmxa66NQRNIq0A77s+EPQlczJ51FyyvZZs4Ow6IR4UnR6P8TKflO6Gs1jYrnvXfJo4VRLe4= X-Received: by 10.80.207.10 with SMTP id c10mr307982edk.133.1518117900869; Thu, 08 Feb 2018 11:25:00 -0800 (PST) MIME-Version: 1.0 Received: by 10.80.179.198 with HTTP; Thu, 8 Feb 2018 11:25:00 -0800 (PST) In-Reply-To: <9652C957FCDF4D71BA57BF015BB31C88@mal> References: <9652C957FCDF4D71BA57BF015BB31C88@mal> From: Andy Talbot Date: Thu, 8 Feb 2018 19:25:00 +0000 Message-ID: To: LineOne Cc: rsgb_lf_group X-Spam-Score: 2.6 (++) X-Spam-Report: Spam detection software, running on the system "relay1.thorcom.net", has NOT identified this incoming email as spam. The original message has been attached to this so you can view it or label similar future email. If you have any questions, see the administrator of that system for details. Content preview: My 700 Watt design could probably be increased to over 1kW now with more modern components. Take a look at http://www.g4jnt.com/137tx.pdf Andy G4JNT On 8 February 2018 at 18:34, wrote: [...] Content analysis details: (2.6 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- 0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail provider (andy.g4jnt[at]gmail.com) 1.6 SUBJ_ALL_CAPS Subject is all capitals 0.0 HTML_MESSAGE BODY: HTML included in message 0.0 HTML_FONT_LOW_CONTRAST BODY: HTML font color similar or identical to background 0.0 T_DKIM_INVALID DKIM-Signature header exists but is not valid 1.0 FREEMAIL_REPLY From and body contain different freemails X-Scan-Signature: 4b1739ed9f8a5c36a1958dbdf5306bf7 Subject: Re: LF: DECCA AMP Content-Type: multipart/alternative; boundary="089e082236683564690564b85ead" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: ** X-Spam-Status: No, hits=2.2 required=5.0 tests=HTML_50_60,HTML_MESSAGE, HTML_TAG_EXISTS_TBODY,HTML_WEB_BUGS,PORN_4 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 --089e082236683564690564b85ead Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable My 700 Watt design could probably be increased to over 1kW now with more modern components. Take a look at http://www.g4jnt.com/137tx.pdf Andy G4JNT On 8 February 2018 at 18:34, wrote: > Chris > I do not have any spare amps but I think G7NKS/JIM has some units, maybe > you could ask him. > If you look at the Decca 5501 info on the web you could build a copy whic= h > would be very reliable. It uses a bridge cct which most commercial > manufacturers favour compared to push pull etc > See attachment of a similar amp that would be simple to build and reliabl= e > and give around 1Kw output. It is a standard cct nothing special about it= . > Where it says OUT1 and OUT2 use a series resonant cct for the freq of > interest, similar to the Decca cct then a matching ferrite transformer to > match the FET 8 ohms approx to 50 ohms. > > > *From:* Chris Wilson dead.fets@gmail.com [rsgb_lf_group] > *Sent:* Thursday, February 8, 2018 3:54 PM > *To:* g3kevmal@talktalk.net [rsgb_lf_group] > *Cc:* dead.fets@gmail.com > *Subject:* Re: [rsgb_lf_group] Fw: > > > > > > Hello g3kevmal@talktalk.net, > > Thursday, February 8, 2018, 3:29:21 PM, you wrote: > > are there any of the old Decca units still available anywhere Mal? I have > an Ebay watch on them, for years in fact, never seen one.... Nice set > up! Shame my TS-590 got zapped it was a good transceiver. > > > > > MF/630M GROUP > > > > See attached picture of my 474.2 Khz equipment > > > > TS590 TRANSCEIVER/MODIFIED DECCA 5501 SINGLE UNIT AMPLIFIEER/'SCOPE to > > monitor outgoing signal. > > apeed, > > it was a good transceiver. > > > > Anternna is an INV L 1/4 WAVE ON 630 METRES UP 100 feet approx vertical > and > > the rest horizontal. Antenna used for TX/RX with alt RX antenna, my 160= m > INV > > L 1/4 WAVE UP 80 feet vertical and rest horizontal and resonated for > > 630metres when in use > > My QTH is in the countryside and antennas are in a field away from > > environmental local noise. > > I have a selection of HF antennas for all other HF bands selected as > > required. > > > > 73 de mal/g3kev/io94sh > > -- > Best regards, > Chris mailto:dead.fets@gmail.com > > __._,_.___ > ------------------------------ > Posted by: Chris Wilson > ------------------------------ > Reply via web post > > =E2=80=A2 Reply to sender =E2=80=A2 Reply to group =E2=80=A2 Start a new = topic > > =E2=80=A2 Messages in this topic > > (2) > Visit Your Group > > > > [image: Yahoo! Groups] > > =E2=80=A2 Privacy =E2=80=A2 > Unsubscribe =E2=80=A2 Terms of Use > > > . > > __,_._,___ > --089e082236683564690564b85ead Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
My 700 Watt design could probably=C2=A0 be increased to ov= er 1kW now with more modern components.=C2=A0 Take a look at=C2=A0http://www.g4jnt.com/137tx.pdf
=
Andy=C2=A0 G4JNT

On 8 February 2018 at 18:34, <g3kevmal@talktalk.n= et> wrote:
Chris
I do not have any spare amps but I think G7NKS/JIM has some units, may= be=20 you could ask him.
If you look at the Decca 5501 info on the web you could build a copy w= hich=20 would be very reliable. It uses a bridge cct which most commercial manufact= urers=20 favour compared to push pull etc
See attachment of a similar amp that would be simple to build and reli= able=20 and give around 1Kw output. It is a standard cct nothing special about it. = Where=20 it says OUT1 and OUT2 use a series resonant cct for the freq of interest,= =20 similar to the Decca cct then a matching ferrite transformer to match the F= ET 8=20 ohms approx to 50 ohms.
=C2=A0
=C2=A0
Sent: Thursday, February 8, 2018 3:54 PM
Cc: dead.fets@gmail.com
Subject: Re: [rsgb_lf_group] Fw:
=C2=A0
= =C2=A0=20



Hello g3kevmal@talktalk.net,

Thursday, February 8, 2018,=20 3:29:21 PM, you wrote:

are there any of the old Decca units still=20 available anywhere Mal? I have
an Ebay watch on them, for years in fact,= =20 never seen one.... Nice set
up! Shame my TS-590 got zapped it was a good= =20 transceiver.

>
> MF/630M GROUP
>
> See attach= ed=20 picture of my 474.2 Khz equipment
>
> TS590 TRANSCEIVER/MODIFI= ED=20 DECCA 5501 SINGLE UNIT AMPLIFIEER/'SCOPE to
> monitor outgoing=20 signal.
> apeed,
> it was a good transceiver.
>
>= =20 Anternna is an INV L 1/4 WAVE ON 630 METRES UP 100 feet approx vertical=20 and
> the rest horizontal. Antenna used for TX/RX with alt RX antenna= , my=20 160m INV
> L 1/4 WAVE UP 80 feet vertical and rest horizontal and=20 resonated for
> 630metres when in use
> My QTH is in the=20 countryside and antennas are in a field away from
> environmental lo= cal=20 noise.
> I have a selection of HF antennas for all other HF bands sel= ected=20 as
> required.
>
> 73 de mal/g3kev/io94sh

-- Best=20 regards,
Chris mailto:dead.fets@gmail.com

__._,_.___
Posted by: Chris Wilson <dead.fets@gmail.com>=20
Reply=20 via web post =E2=80=A2 Reply to sender =E2=80=A2 Reply to group =E2=80=A2 Start=20 a new topic =E2=80=A2 M= essages=20 in this topic (2)
3D"Yahoo!=20
=E2=80=A2 Privacy =E2=80=A2=20 Unsubscribe =E2=80=A2 Terms of=20 Use

.

=20
__,_._,___

--089e082236683564690564b85ead--