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 v9OEIZKP019115 for ; Tue, 24 Oct 2017 16:18:36 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1e6zxp-0007Kh-37 for rs_out_1@blacksheep.org; Tue, 24 Oct 2017 15:13:53 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1e6zxo-0007KX-K1 for rsgb_lf_group@blacksheep.org; Tue, 24 Oct 2017 15:13:52 +0100 Received: from know-smtprelay-omc-9.server.virginmedia.net ([80.0.253.73]) by relay1.thorcom.net with esmtps (TLSv1:DHE-RSA-AES256-SHA:256) (Exim 4.89) (envelope-from ) id 1e6zxj-00076K-Vm for rsgb_lf_group@blacksheep.org; Tue, 24 Oct 2017 15:13:51 +0100 Received: from ASUS ([82.21.241.77]) by know-smtprelay-9-imp with bizsmtp id RSDm1w00U1gtunm01SDnh6; Tue, 24 Oct 2017 15:13:47 +0100 X-DKIM-Result: Domain=ntlworld.com Result=Signature OK X-Originating-IP: [82.21.241.77] X-Authenticated-User: X-Spam: 0 X-Authority: v=2.1 cv=aJkN0uJm c=1 sm=1 tr=0 a=+we89o/nwg41pYryx2JXJA==:117 a=+we89o/nwg41pYryx2JXJA==:17 a=L9H7d07YOLsA:10 a=9cW_t1CCXrUA:10 a=s5jvgZ67dGcA:10 a=x7bEGLp0ZPQA:10 a=r77TgQKjGQsHNAKrUKIA:9 a=F3M5lZpKAAAA:8 a=O4LYrcXgAAAA:8 a=NLZqzBF-AAAA:8 a=ivnXqhBVAAAA:8 a=nN7BH9HXAAAA:8 a=KlLti8EWwhKaLsgemFEA:9 a=S1AK2zTDwNaD44j-:21 a=Rj7gDEwswLdy5YSJ:21 a=QEXdDO2ut3YA:10 a=otjVRfKTb3wA:10 a=pGLkceISAAAA:8 a=yMhMjlubAAAA:8 a=21Rt4wHAHxsriQ7X6YQA:9 a=nXDOnvbSFXWDrjXN:21 a=trNKHH-032QCyTXf:21 a=hJ8MRbKADEZtNBv6:21 a=_W_S_7VecoQA:10 a=frz4AuCg-hUA:10 a=slCku8JSH3TyizEDQ3pD:22 a=WkHpX59NubE9URYfd-P-:22 a=wW_WBVUImv98JQXhvVPZ:22 Message-ID: <6F30438189EC4057BC2389B979882F40@ASUS> From: To: References: ,<5ABEF02DE15242638A23850ED5FED8CA@ASUS> <1508851832792.60803@kuleuven.be> In-Reply-To: <1508851832792.60803@kuleuven.be> Date: Tue, 24 Oct 2017 15:13:46 +0100 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal Importance: Normal X-Mailer: Microsoft Windows Live Mail 15.4.3555.308 X-MimeOLE: Produced By Microsoft MimeOLE V15.4.3555.308 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ntlworld.com; s=meg.feb2017; t=1508854427; bh=o0P1fxYW2MbAGKPZGqx5EzCeuc3U6xEj4vchaiw8vwE=; h=From:To:References:In-Reply-To:Subject:Date; b=A4tkwX8COL5+BzVR905oB9nCDBVY8EjjuM2qqnaF44DCVRBaxvT4urmQuNhFR5fTv 7Rvf68zxQ0DqRdcA92zOg1ui5nUAiSKxyu+HiOAl+m5qgIele80pScTeOgi1kLJpe4 bzvARyqeN13n45w+VoqQiZigw3zDgIdKV+NzKxQoI7FySNtKb5Cbf/WFZqohXi3FTQ wNYubQeF2xWVMdTRpgPedMh5DvlRpr1IUbXCIIVYT8xak6hi+eCHIBF3MjAEReCBjt I2AeyhDVcEs3/8m4MuTjDrZbMcYW+swAWkuAgLnnt96ETB9yMcIXN4032SaoCACVV9 yPr+PswA6r5gg== X-Spam-Score: 0.0 (/) 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: Hi Rik Thanks for that info, I tried to find a price for the unit but seems they no longer make them? Any idea what the equivalent maybe, Found a 52 V –30 A unit they make. Looks like lots of $’s Hi. [...] Content analysis details: (0.0 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- 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: 0ab70725ada1f2f2fc892d39dd644afd Subject: Re: LF: Re: Re: MF/160 Content-Type: multipart/alternative; boundary="----=_NextPart_000_01D7_01D34CDA.B05A5D50" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: * X-Spam-Status: No, hits=1.3 required=5.0 tests=HTML_30_40,HTML_MESSAGE, LINES_OF_YELLING,LINES_OF_YELLING_2,MISSING_OUTLOOK_NAME,NO_REAL_NAME 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 This is a multi-part message in MIME format. ------=_NextPart_000_01D7_01D34CDA.B05A5D50 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Hi Rik Thanks for that info, I tried to find a price for the unit but seems = they no longer make them? Any idea what the equivalent maybe, Found a 52 = V =E2=80=9330 A unit they make. Looks like lots of $=E2=80=99s Hi. Good signals on FT8 by the way. Still looking to get an FT8 QSO with = Spiros. 73 Ian G4GIR From: Rik Strobbe=20 Sent: Tuesday, October 24, 2017 2:30 PM To: rsgb_lf_group@blacksheep.org=20 Subject: LF: Re: Re: MF/160 Hello Ian, Andy, all, I am using a Delta 1200S48 SMPSU (see = https://www.prbx.com/wp-content/uploads/pimfiles/560/dts_1200s.pdf). I = cannot detect any noise coming from this PSU on 137 or 475 kHz. Output voltage can be regulated from 22 to 63V, very handy to set the TX = output power.=20 With the current TX I can adjust the output power to any value between = 10 and 300 W (PSU voltage in combination with a tap on the TX output = transformer). The only drawback is relative slow regulation, causing a significant = voltage dip (abt. 20%) during some milliseconds at "key down". Not an = issue on WSPR, JT9, FT8, QRSS etc... but I am not so happy with this for = CW. 7=E2=80=8B3, Rik ON7YD - OR7T -------------------------------------------------------------------------= ------- Van: owner-rsgb_lf_group@blacksheep.org = namens i.frith@ntlworld.com = Verzonden: dinsdag 24 oktober 2017 14:59 Aan: rsgb_lf_group@blacksheep.org Onderwerp: LF: Re: MF/160=20 Hi Andy I, like you use SMPSU=E2=80=99s 50V approx 10A . Mine are Chinese albeit = shipped in the UK! was a bit dirty but all it needed was a mains input = filter. Now very quiet. Wonder what type/model/EBay number you are = using. I went for a pair of 28V 10A units so I could use 56 or 28 V on = the 472 KHz TX. Thanks 73 Ian G4GIR Whic From: Andy Talbot=20 Sent: Monday, October 23, 2017 8:20 PM To: rsgb_lf_group@blacksheep.org=20 Subject: Re: Re: Re: LF: MF/160 I don't knoe why radio amateurs are so anti SMPSU on principle. =20 Unfiltered nasty Chinese ones may be bad, but anything can be cleaned = up. =20 My 50 Volt 20A one I use with teh 475kHz PA is absolutely quiet, not a = whisper detectable on any frequency from LF to HF=20 'jnt On 23 October 2017 at 20:07, dhchurch wrote: Hello Andy=20 The idea of using any SMPS in, or near, the shack is somewhat = abhorrent. It is possible to introduce a series circuit in a linear PSU = which is not exactly a regulator but has a hum cancellation circuit, = something that used to appear in an ancient National Semiconductor = publication. I'd love to try it but just haven't left any room in my = PSUs, they're stuffed full, including a cooling fan. A couple of 100Hz = side bands are at least predictable, my PA has, but there is one = regular transmission on LF which has all manner of spurii making = reception here somewhat variable. I think Dave, GW8GLO, has a system which promptly knocks off his = transmitter SMPS when going into Rx mode, maybe this is the way to go. 73, Hugh, M0DSZ ----- Receiving the following content -----=20 From: Andy Talbot=20 Receiver: rsgb_lf_group=20 Time: 2017-10-23, 10:12:17 Subject: Re: Re: LF: MF/160 Its a difficult call - I have a similar problem with my 700 Watt = 137kHz Tx.=E3=80=80 =E3=80=8030dB hum sidebands corresponds to 3% = ripple, which in the main scheme of things is not that much.=E3=80=80 = =E3=80=80It would need an enormous reservoir capacitor to make a serious = reduction.=E3=80=80=E3=80=80=20 Either that or design the Tx to run from 50V and use a SMPSU instead = of raw rectified AC Andy=E3=80=80 G4JNT On 23 October 2017 at 10:03, dhchurch wrote: Mal, I think a little attention should be paid to, perhaps, your = power supply.=E3=80=80The 100Hz sidebands, as I recall from earlier this = week, should be much lower in level. Seen on Spectrum Lab=E3=80=80at one = stage, they were less than -30dB in comparative level.=E3=80=80 =E3=80=80 73, Hugh, M0DSZ =E3=80=80 ----- Receiving the following content -----=20 From: Andy Talbot=20 Receiver: rsgb_lf_group=20 Time: 2017-10-22, 22:44:59 Subject: Re: LF: MF/160 You're so strong, Mal,=E3=80=80 I'm getting decodes on your hum = sidebands=20 = 21:36=E3=80=80=E3=80=80G3KEV=E3=80=80=E3=80=800.475804=E3=80=80=E3=80=80-= 27=E3=80=80=E3=80=800=E3=80=80=E3=80=80IO94sh=E3=80=80=E3=80=805=E3=80=80= =E3=80=80G4JNT=E3=80=80=E3=80=80IO90iv=E3=80=80=E3=80=80384=E3=80=80=E3=80= =80189=E3=80=80=E3=80=802017-10-22 = 21:36=E3=80=80=E3=80=80G3KEV=E3=80=80=E3=80=800.475704=E3=80=80=E3=80=80+= 3=E3=80=80=E3=80=800=E3=80=80=E3=80=80IO94sh=E3=80=80=E3=80=805=E3=80=80=E3= =80=80G4JNT=E3=80=80=E3=80=80IO90iv=E3=80=80=E3=80=80384=E3=80=80=E3=80=80= 189=E3=80=80=E3=80=802017-10-22 = 21:36=E3=80=80=E3=80=80G3KEV=E3=80=80=E3=80=800.475604=E3=80=80=E3=80=80-= 29=E3=80=80=E3=80=800=E3=80=80=E3=80=80IO94sh=E3=80=80=E3=80=805=E3=80=80= =E3=80=80G4JNT=E3=80=80=E3=80=80IO90iv=E3=80=80=E3=80=80384=E3=80=80=E3=80= =80189=E3=80=80=E3=80=802017-10-22 1 Andy=E3=80=80 =E3=80=80G4JNT On 22 October 2017 at 19:25, mal hamilton = wrote: NICE CONDX 160M THIS EVENING VK7DIK =E3=80=80REPORTING G3KEV = WSPR MODE LOOKING GOOD FOR MF/630 M ALSO TNX REPORT DE MAL/G3KEV =E3=80=80 =E3=80=80 =E3=80=80 =E3=80=80 =E3=80=80 =E3=80=80 =E3=80=80 =E3=80=80 =E3=80=80 =E3=80=80 =E3=80=80 =E3=80=80 =E3=80=80 =E3=80=80 Sent from Mail for Windows 10 =E3=80=80 ------=_NextPart_000_01D7_01D34CDA.B05A5D50 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Hi Rik
 
Thanks for that info, I tried to find a price for the unit but = seems they=20 no longer make them? Any idea what the equivalent maybe, Found a 52 V = =E2=80=9330 A unit=20 they make. Looks like lots of $=E2=80=99s  Hi.
 
Good signals on FT8 by the way. Still looking to get an FT8 QSO = with=20 Spiros.
 
73
 
Ian G4GIR
 
Sent: Tuesday, October 24, 2017 2:30 PM
To: rsgb_lf_group@blacksheep.org =
Subject: LF: Re: Re: MF/160
 

Hello Ian, Andy, all,

 

I am using a Delta 1200S48 SMPSU (see https://www.prbx.com/wp-content/uploads/pimfiles/560/dts_1200s.pdf= ).=20 I cannot detect any noise coming from this PSU on 137 or 475 = kHz.

Output voltage can be regulated from 22 to 63V, very handy to set the = TX=20 output power.

With the current TX I can adjust=20 the output power to any value between 10 and 300 W (PSU voltage in=20 combination with a tap on the TX output transformer).

The only drawback is relative slow regulation, causing a significant = voltage=20 dip (abt. 20%) during some milliseconds at "key down". Not an issue on = WSPR,=20 JT9, FT8, QRSS etc... but I am not so happy with this for CW.

 

7=E2=80=8B3, Rik  ON7YD - OR7T

 

Van: = owner-rsgb_lf_group@blacksheep.org=20 <owner-rsgb_lf_group@blacksheep.org> namens i.frith@ntlworld.com=20 <i.frith@ntlworld.com>
Verzonden: dinsdag 24 oktober = 2017=20 14:59
Aan: rsgb_lf_group@blacksheep.org
Onderwerp: = LF: Re:=20 MF/160=20
 
Hi Andy
 
I, like you use SMPSU=E2=80=99s 50V approx 10A . Mine are Chinese = albeit shipped in=20 the UK! was a bit dirty but all it needed was a mains input filter. Now = very=20 quiet. Wonder what type/model/EBay number you are using. I went for a = pair of=20 28V 10A units so I could use 56 or 28 V on the 472 KHz TX.
 
Thanks
73 Ian G4GIR
 
 
Whic
 
Sent: Monday, October 23, 2017 8:20 PM
To: rsgb_lf_group@blacksheep.org =
Subject: Re: Re: Re: LF: MF/160
 
I don't knoe why radio amateurs are so anti SMPSU on=20 principle.   =20
Unfiltered nasty Chinese ones may be bad, but anything can be = cleaned=20 up. 
 
My 50 Volt 20A one I use with teh 475kHz PA is absolutely quiet, = not a=20 whisper detectable on any frequency from LF to HF=20
 
'jnt
 
 
On 23 October 2017 at 20:07, dhchurch <dhchurch@lineone.net> = wrote:
Hello Andy
 
The idea of using any SMPS in, or near, the shack is somewhat = abhorrent.=20 It is possible to introduce a series circuit in a linear PSU which is = not=20 exactly a regulator but has a hum cancellation circuit, something that = used to=20 appear in an ancient National Semiconductor publication. I'd love to = try it=20 but just haven't left any room in my PSUs, they're stuffed full, = including a=20 cooling fan. A couple of 100Hz side bands are at least predictable, my = PA=20 has,  but there is one regular transmission on LF which has all = manner of=20 spurii making reception here somewhat variable.
 
I think Dave, GW8GLO, has a system which promptly knocks off his=20 transmitter SMPS when going into Rx mode, maybe this is the way to = go.
 
73, Hugh, M0DSZ
 
-----=20 Receiving the following content -----
From:=20 Andy Talbot
Receiver:=20 rsgb_lf_group
Time:=20 2017-10-23, 10:12:17
Subject:=20 Re: Re: LF: MF/160
 
Its a difficult call - I have a similar problem with = my 700=20 Watt 137kHz Tx.=E3=80=80 =E3=80=8030dB hum sidebands corresponds to = 3% ripple, which in the=20 main scheme of things is not that much.=E3=80=80 =E3=80=80It would = need an enormous=20 reservoir capacitor to make a serious reduction.=E3=80=80=E3=80=80=20
 
Either that or design the Tx to run from 50V and use a SMPSU = instead of=20 raw rectified AC
 
Andy=E3=80=80 G4JNT
 
On 23 October 2017 at 10:03, dhchurch <dhchurch@lineone.net> = wrote:
Mal, I think a little attention should be paid to, perhaps, = your=20 power supply.=E3=80=80The 100Hz sidebands, as I recall from = earlier this week,=20 should be much lower in level. Seen on Spectrum Lab=E3=80=80at one = stage, they=20 were less than -30dB in comparative level.=E3=80=80
=E3=80=80
73, Hugh, M0DSZ
=E3=80=80
-----=20 Receiving the following content -----
From:=20 Andy Talbot
Receiver:=20 rsgb_lf_group
Time:=20 2017-10-22, 22:44:59
Subject:=20 Re: LF: MF/160
 
You're so strong, Mal,=E3=80=80 I'm getting = decodes on your hum=20 sidebands=20
 
=
21:36=E3=80=80=E3=80=80G3KEV=E3=80=80=E3=80=800.475804=E3=80=80=E3=80= =80-27=E3=80=80=E3=80=800=E3=80=80=E3=80=80IO94sh=E3=80=80=E3=80=805=E3=80= =80=E3=80=80G4JNT=E3=80=80=E3=80=80IO90iv=E3=80=80=E3=80=80384=E3=80=80=E3= =80=80189=E3=80=80=E3=80=802017-10-22=20 = 21:36=E3=80=80=E3=80=80G3KEV=E3=80=80=E3=80=800.475704=E3=80=80=E3=80=80+= 3=E3=80=80=E3=80=800=E3=80=80=E3=80=80IO94sh=E3=80=80=E3=80=805=E3=80=80=E3= =80=80G4JNT=E3=80=80=E3=80=80IO90iv=E3=80=80=E3=80=80384=E3=80=80=E3=80=80= 189=E3=80=80=E3=80=802017-10-22=20 = 21:36=E3=80=80=E3=80=80G3KEV=E3=80=80=E3=80=800.475604=E3=80=80=E3=80=80-= 29=E3=80=80=E3=80=800=E3=80=80=E3=80=80IO94sh=E3=80=80=E3=80=805=E3=80=80= =E3=80=80G4JNT=E3=80=80=E3=80=80IO90iv=E3=80=80=E3=80=80384=E3=80=80=E3=80= =80189=E3=80=80=E3=80=802017-10-22=20 1
 
Andy=E3=80=80 =E3=80=80G4JNT
 
On 22 October 2017 at 19:25, mal = hamilton <g3kevmal@talktalk.net>=20 wrote:

NICE CONDX 160M THIS EVENING VK7DIK = =E3=80=80REPORTING=20 G3KEV WSPR MODE

LOOKING GOOD FOR MF/630 M ALSO

TNX REPORT DE MAL/G3KEV

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Sent from Mail for Windows 10

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