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 wBR32sdV005783 for ; Thu, 27 Dec 2018 04:03:02 +0100 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1gcLsm-0000gb-I1 for rs_out_1@blacksheep.org; Thu, 27 Dec 2018 02:58:48 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1gcLsl-0000gS-VN for rsgb_lf_group@blacksheep.org; Thu, 27 Dec 2018 02:58:47 +0000 Received: from mail-pl1-x62e.google.com ([2607:f8b0:4864:20::62e]) by relay1.thorcom.net with esmtps (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.91_59-0488984) (envelope-from ) id 1gcLsg-0008Bs-95 for rsgb_lf_group@blacksheep.org; Thu, 27 Dec 2018 02:58:46 +0000 Received: by mail-pl1-x62e.google.com with SMTP id w4so8215785plz.1 for ; Wed, 26 Dec 2018 18:58:41 -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:references:in-reply-to:from:date:message-id:subject:to; bh=AJQx8/6+7uKxUQErGbBbvCdzPFvAdHxz0PkttNuN2u8=; b=pwsvEouR6Re1F8ZasPrQPcOzTRPnncQJyjATK34J0+DAjfbpjuQCNd3nr9/i633yqZ iO1wY8jG1WbeuwUt4xx04q3fHd/eu/0CazGyVqoZ5ENg25xFRbeqGE6KkZYYUxJPVAjy +WvlpPD29LhYEkDoagPEwe/ESH2rsovnCvasYZhvmV5l3cB7L/yHAZfHoO4hWsHLzd11 j15pfAICA4QZ09RL8YLrhsz3o6rMnOSTVjiXqXhXGONWrVcsG/wcVThrvAytlDeKpQ9L /ZChXtgTK9VUkbNBC82yzPXLnVby/oUXzD0Svr6Q8aT4+cxmNR5wSHvRgyt6mGMWxowv ZcBg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to; bh=AJQx8/6+7uKxUQErGbBbvCdzPFvAdHxz0PkttNuN2u8=; b=l5YdK+fJjLFwKbgqK8WzXxzd6PXIUcTQzoTM4DvVYYPwmdNPVMRyflq/l0ZY/zEzVB JFThsHzdmDeDn3Zj8+pJ+PRSAdTZqJ6b1iGGtl5uVbDDj/UowD4VU+3txGtD644xXfcq 3PKoyk9/KEH8unv7hOoEgZZbUe/O+rSVR3M9jl42HyAbTiX4Q+c6UqUD3LazfjktBzjL 7zz3RVnXFL7Hysl/SVUwDUzgJTeiiFFnKtbR2uoAdYb4iHeTT6oYCLBNZBTcayX0uHrT sZfDu47aKPErvewIZkdF5RCHMn4fCdHg/iJ7I3GcSgqQVCSRwOlrFi3doDS8nEuDcZpq /XCw== X-Gm-Message-State: AJcUukeRtR0P53zL403jpe7LzfjxKndCnGKh9wF4uewcEF6SLJ8m01v7 ODmjhvDnbRibxXkPf+engk6gaFpabDt6yo1djcEv4CKM X-Google-Smtp-Source: ALg8bN68t7lvcouBZl5AM/qb+dcLvFVogZrHPGwvbiFKaD0lGaMSyWI2D1INFwozjLaNEBddqHtAlfftFVti7wNARMQ= X-Received: by 2002:a17:902:6946:: with SMTP id k6mr22521040plt.101.1545879520382; Wed, 26 Dec 2018 18:58:40 -0800 (PST) MIME-Version: 1.0 References: <107957155.20181226185523@gmail.com> In-Reply-To: <107957155.20181226185523@gmail.com> From: Gaj Kumar Date: Thu, 27 Dec 2018 08:28:29 +0530 Message-ID: To: rsgb_lf_group@blacksheep.org X-Spam-Score: 1.6 (+) 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 @@CONTACT_ADDRESS@@ for details. Content preview: Hi Chris Merry Xmas and happy new year to all I feel like a new kid again , I got my license at 13 in 1974 and built my first MW receiver at 10 ! Content analysis details: (1.6 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at http://www.dnswl.org/, no trust [2607:f8b0:4864:20:0:0:0:62e listed in] [list.dnswl.org] 1.6 SUBJ_ALL_CAPS Subject is all capitals -0.0 SPF_PASS SPF: sender matches SPF record 0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail provider (bsgkumar[at]gmail.com) 0.0 HTML_MESSAGE BODY: HTML included in message 0.0 T_DKIM_INVALID DKIM-Signature header exists but is not valid X-Scan-Signature: 9384a33da03ada6d15116c61d7d30153 Subject: Re: LF: VU2BGS Content-Type: multipart/alternative; boundary="000000000000ad9372057df81ff2" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.0 required=5.0 tests=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 --000000000000ad9372057df81ff2 Content-Type: text/plain; charset="UTF-8" Hi Chris Merry Xmas and happy new year to all I feel like a new kid again , I got my license at 13 in 1974 and built my first MW receiver at 10 ! Thanks for the wonderful tips . yes i too have the same expereince with the chinese toroids . Only one good success so far with a High Q material gives me Q over the scale on a HP4343 1000+ on MW . else all the others are very varying in values . I Have a soft rock LF Version , will try to also see how well it works , any one used this for SOFT rocK LF version . My biggest problem is the local noise . now have to build a good noise Phase for LF and MW . As i mentioned i will be moving out of the city and hope to combat QRM from one 220kV power line source from the south . Ye i will lookup the W1VD and G0MRF sites and see what i can do before thw winter ends ! thanks for the good encouragements hope to see /hear you on the bands Kumar VU2BGS On Thu, Dec 27, 2018 at 12:28 AM Chris Wilson wrote: > > > Hello Gaj, > > Welcome to our small forum! You need to take a bit of care with > Chinese toroids, I have had some that when measured against branded > ones direct from the makers checked out well off specification. (I > have also had some that seemed fine, so it's a bit of a lottery. If > funds and hassle permit it's probably safest to buy from known vendors > of OE toroids. I run a QRP labs U3S without the PA section, and a > TS-590S as drivers. The 590S when "wide banded" by removal of a zero > Ohm resistor (or maybe it was a diode, I forget now but a very simple > mod) will give just under 1mW from the DRIVE socket on the back of > clean sine wave at 136 or 272 kHz. > > I then use a simpler squarer powered from the ATU connector again on > the back of the 590 and a basic regulator to get square waves at twice > the desired TX frequency. Then I set the ADVANCED - X2 option in the > later versions of WSJT-X to give the correct output format. This then > directly drives a Class D LF amplifier based on the well tried W1VD > design and given 50V it will reliably give 1kW output. It will of > course run lower power on less volts, I have run it at 8V on occasions > for some QRP ;) You can build the same amp for MF, but my intermediate > licence here in the UK forbids me to TX on MF. > > G0MRF has extremely well made and documented amp kits for about 400W > output on LF or MF should you wish a tried and tested complete kit of > bits. > > The 590S when tested by David G0MRF on here, proved pretty good on LF > and MF receive too :) I am active on LF though and look forward to > watching and hearing of your activities. I also use a Red Pitay for RX > and it is a bit better than the 590 given a band pass filter and very > simple Ebay pre amp. > > Very good luck, a happy Christmas and a healthy and prosperous New Year > to you and yours, it's very good to see you here :) > > Wednesday, December 26, 2018, 4:14:10 PM, you wrote: > > > > > Dear Clemens > > Thanks for the kind suggestion I will look it up . > > does any one have some kind of Material and equivalent table . > > > > I find the post offices are charging exorbitant duties , Yesterday i > paid 57 % > > > > while chinese goods come in easily with lower pricing !! > > . I presume there would be some chinese companies making toroids . > > > > Thanks again > > Best regards > > Kumar > > > > > > On Wed, Dec 26, 2018 at 9:37 PM Clemens Paul wrote: > > > > > > > Hi Kumar, > > > >>only the ferrites are a big problems here ! > > > > You may have a look at > > https://www.radio-store.co.uk/ > > > > They ship worldwidwe,sell also small quantities and have very > competitive prices. > > > > 73 > > Clemens > > DL4RAJ > > > > > >>-----Original Message----- > >>From: owner-rsgb_lf_group@blacksheep.org > >>[mailto:owner-rsgb_lf_group@blacksheep.org] On Behalf Of Gaj Kumar > >>Sent: Wednesday, December 26, 2018 9:40 AM > >>To: rsgb_lf_group@blacksheep.org > >>Subject: Re: LF: VU2BGS > > > > > > -- > Best regards, > Chris mailto:dead.fets@gmail.com > > > --000000000000ad9372057df81ff2 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Hi Chris=C2=A0

Merry Xmas and happy new= year to all=C2=A0

I feel like a new kid again , I= got my license at 13=C2=A0 in 1974 and built my first MW receiver at 10 !<= /div>

Thanks for the wonderful tips .=C2=A0
ye= s i too have the same expereince with the chinese toroids . Only one good s= uccess so far with a High Q material gives me Q over the scale on a HP4343= =C2=A0=C2=A0
1000+ on MW .
else all the others are=C2= =A0 very varying in values .

I Have a soft rock LF= Version , will try to also see how well it works , any one used this for S= OFT rocK LF version .
My biggest problem is the local noise . now= have to build a good noise Phase for LF and MW .
As i mentioned = i=C2=A0 will be moving out of the city and hope to combat QRM from one=C2= =A0 220kV power line source from the south .

Ye i = will lookup the W1VD and G0MRF sites and see what i can do before thw winte= r ends !

thanks for the good encouragements=C2=A0<= /div>

hope to see /hear you on the bands=C2=A0

Kumar
VU2BGS


<= div>

On Thu,= Dec 27, 2018 at 12:28 AM Chris Wilson <dead.fets@gmail.com> wrote:


Hello Gaj,

Welcome to our small forum! You need to take a bit of care with
Chinese toroids, I have had some that when measured against branded
ones direct from the makers checked out well off specification. (I
have also had some that seemed fine, so it's a bit of a lottery. If
funds and hassle permit it's probably safest to buy from known vendors<= br> of OE toroids. I run a QRP labs U3S without the PA section, and a
TS-590S as drivers. The 590S when "wide banded" by removal of a z= ero
Ohm resistor (or maybe it was a diode, I forget now but a very simple
mod) will give just under 1mW from the DRIVE socket on the back of
clean sine wave at 136 or 272 kHz.

I then use a simpler squarer powered from the ATU connector again on
the back of the 590 and a basic regulator to get square waves at twice
the desired TX frequency. Then I set the ADVANCED - X2 option in the
later versions of WSJT-X to give the correct output format. This then
directly drives a Class D LF amplifier based on the well tried W1VD
design and given 50V it will reliably give 1kW output. It will of
course run lower power on less volts, I have run it at 8V on occasions
for some QRP ;) You can build the same amp for MF, but my intermediate
licence here in the UK forbids me to TX on MF.

G0MRF has extremely well made and documented amp kits for about 400W
output on LF or MF should you wish a tried and tested complete kit of
bits.

The 590S when tested by David G0MRF on here, proved pretty good on LF
and MF receive too :) I am active on LF though and look forward to
watching and hearing of your activities. I also use a Red Pitay for RX
and it is a bit better than the 590 given a band pass filter and very
simple Ebay pre amp.

Very good luck, a happy Christmas and a healthy and prosperous New Year
to you and yours, it's very good to see you here :)

Wednesday, December 26, 2018, 4:14:10 PM, you wrote:



> Dear Clemens=C2=A0
> Thanks for the kind suggestion I will look it up .
> does any one have some kind of Material and equivalent table .


> I find the post offices are charging=C2=A0 exorbitant duties , Yesterd= ay i paid 57 %=C2=A0


> while chinese goods come in easily with lower pricing !!
> =C2=A0. I presume there would be some chinese companies making toroids= .


> Thanks again=C2=A0
> Best regards=C2=A0
> Kumar




> On Wed, Dec 26, 2018 at 9:37 PM Clemens Paul <cpaul@gmx.net> wrote:

>=C2=A0 =C2=A0 =C2=A0 =C2=A0
>=C2=A0 =C2=A0
> Hi Kumar,
>=C2=A0 =C2=A0
=C2=A0>>only the ferrites are a big problems here !
>=C2=A0 =C2=A0
> You may have a look at=C2=A0
> https://www.radio-store.co.uk/
>=C2=A0 =C2=A0
> They ship worldwidwe,sell also small quantities and have very competit= ive prices.
>=C2=A0 =C2=A0
> 73=C2=A0
> Clemens=C2=A0
> DL4RAJ=C2=A0 =C2=A0
> =C2=A0
>=C2=A0 =C2=A0
>>-----Original Message-----=C2=A0
>>From: owner-rsgb_lf_group@blacksheep.org=C2=A0 =C2=A0
>>[mailto:owner-rsgb_lf_group@blacksheep.org] On Behalf Of Gaj Kumar= =C2=A0
>>Sent: Wednesday, December 26, 2018 9:40 AM=C2=A0
>>To: rsgb_lf_group@blacksheep.org=C2=A0
>>Subject: Re: LF: VU2BGS
>=C2=A0 =C2=A0



--
Best regards,
=C2=A0Chris=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 mailto:dead.fets@gmail.com


--000000000000ad9372057df81ff2--