Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-da03.r1000.mx.aol.com (Internet Inbound) with ESMTP id 4982438000088; Fri, 12 Aug 2011 19:00:22 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1Qs0hC-0007Ry-N5 for rs_out_1@blacksheep.org; Fri, 12 Aug 2011 23:59:18 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1Qs0hB-0007Rp-T4 for rsgb_lf_group@blacksheep.org; Fri, 12 Aug 2011 23:59:17 +0100 Received: from mail-ww0-f47.google.com ([74.125.82.47]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1Qs0h9-0002zb-AU for rsgb_lf_group@blacksheep.org; Fri, 12 Aug 2011 23:59:17 +0100 Received: by wwf4 with SMTP id 4so3104414wwf.28 for ; Fri, 12 Aug 2011 15:59:09 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=message-id:from:to:references:in-reply-to:subject:date:mime-version :content-type:x-priority:x-msmail-priority:importance:x-mailer :x-mimeole; bh=gXAjQU9ubIF9aHTFDz9lRbWStsGMlULmmAZCuHQM6ZU=; b=bqfaUFvvdHC0kpxd0JXoSiJnm8rFXgQnjcfPwrQ3+N5Foool6jzFZvKO9KZ2WEfscl nhDHQb8wtpJKkRckK59q1i/ArmNaH1F0uzcDp4+BpfTiP3ERuvhTm0Hx8XquLtfJa3hz z2tOy36yHxSub5F7yBq9+Nx2HJbitxPP7IR74= Received: by 10.216.59.13 with SMTP id r13mr470768wec.105.1313189949334; Fri, 12 Aug 2011 15:59:09 -0700 (PDT) Received: from PcMinto (h50208.upc-h.chello.nl [62.194.50.208]) by mx.google.com with ESMTPS id fg5sm2671631wbb.23.2011.08.12.15.59.08 (version=SSLv3 cipher=OTHER); Fri, 12 Aug 2011 15:59:08 -0700 (PDT) Message-ID: From: Minto Witteveen To: References: <4E4527EF.2000304@iup.uni-heidelberg.de> <52970A62D1224CAF9A966D1743DCBF00@PcMinto> <4E456AB7.6090403@iup.uni-heidelberg.de> <4FB899125601413A9077646E2728C784@PcMinto> <4E45A678.5010908@iup.uni-heidelberg.de> In-Reply-To: <4E45A678.5010908@iup.uni-heidelberg.de> Date: Sat, 13 Aug 2011 00:59:01 +0200 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal Importance: Normal X-Mailer: Microsoft Windows Live Mail 15.4.3538.513 X-MimeOLE: Produced By Microsoft MimeOLE V15.4.3538.513 X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,HTML_MESSAGE=0.001 Subject: LF: Re: PA3BCA Content-Type: multipart/alternative; boundary="----=_NextPart_000_01F2_01CC5954.30C4F1C0" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.9 required=5.0 tests=HTML_30_40,HTML_MESSAGE, MISSING_OUTLOOK_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 x-aol-global-disposition: G X-AOL-SCOLL-SCORE: 0:2:468900416:93952408 X-AOL-SCOLL-URL_COUNT: 0 X-AOL-SCOLL-AUTHENTICATION: mail_rly_antispam_dkim-m025.2 ; domain : gmail.com DKIM : fail x-aol-sid: 3039ac1d404b4e45b0866555 X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none This is a multi-part message in MIME format. ------=_NextPart_000_01F2_01CC5954.30C4F1C0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Hi Stefan, Well luckily most stuff for 136 is cheap, but it requires some() work You know what I think about deadlines :-) so I=E2=80=99m not promising a = deadline for my PA, but it is definitely going to be finished = (Variometer is probably the biggest challenge). Have a nice holliday, see (Speclab) you in two weeks. I take it your /p plans for tomorrow are off? Regards, Minto pa3bca -------------------------------------------------------------------------= - Ceterum censeo Carthaginem delendam esse From: Stefan Sch=C3=A4fer=20 Sent: Saturday, August 13, 2011 00:17 To: rsgb_lf_group@blacksheep.org=20 Subject: Re: LF: Re: PA3BCA Hi Minto. The signal must have been about 6 dB lower than yesterday. Still have to = go back to the old system, unfortunately. Difficult to do good = measurements here in the "shack" where all the stuff is floating either = on mains voltage or on 137 kHz or a mixture of that. Have a battery = supplied oscilloscope but anyway. I didn't got more than that what you saw, no higher power was possible = even when running the SMPS at 320 VDC. Unfortunately now i saw what the = reason was/is: Some of the turns of the loading coil moved a bit and so = i was outside the resonance. Since the Q of the TX antenna is very = high, the power goes down quickly when beeing outside the resonance. I = haven't had the tuning-meter (U,I, phase) in line, and just tuned the = shack-internal variometer for a maximum signal. After the unwanted fault and replacing the FET i had to find other = problems like a non conducting shunt resistor (current sensing). This = wasn't visible. For some reason the current limiting didn't work then. A = second loud BAAAAAAANG caused me to let it be for this week! Now two = mains fuses here at QRL are OFF and i don't have the key to put them in = again.=20 Anyway, i'm in holiday for the next 2 weeks and they will be back in = when i am back and no one will remember that, hopefully, hi.=20 Actually all that stuff should be exchanges in a QSO :-) BTW how about = YOUR PA? :-) 73, Stefan/DK7FC Now trying to bring the coil back to its previous L... ------=_NextPart_000_01F2_01CC5954.30C4F1C0 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable

Hi Stefan,

Well luckily most stuff for 136 is cheap, but it requires = some()=20 work
You know what = I think=20 about deadlines :-) so I=E2=80=99m not promising a deadline for my PA, = but it is=20 definitely going to be finished (Variometer is probably the biggest=20 challenge).

Have a nice holliday, see (Speclab) you in two = weeks.
I take it=20 your /p plans for tomorrow are off?

Regards,
Minto = pa3bca

 
-------------------------------------------------------------------= -------
Ceterum=20 censeo Carthaginem delendam esse
 
From: Stefan = Sch=C3=A4fer
Sent: Saturday, August 13, 2011 00:17
Subject: Re: LF: Re: PA3BCA
 
Hi=20 Minto.

The signal must have been about 6 dB lower than yesterday. = Still=20 have to go back to the old system, unfortunately. Difficult to do good=20 measurements here in the "shack" where all the stuff is floating either = on mains=20 voltage or on 137 kHz or a mixture of that. Have a battery supplied = oscilloscope=20 but anyway.

I didn't got more than that what you saw, no higher = power was=20 possible even when running the SMPS at 320 VDC. Unfortunately now i saw = what the=20 reason was/is: Some of the turns of the loading coil moved a bit and so = i was=20 outside the resonance. Since  the Q of the TX antenna is very high, = the=20 power goes down quickly when beeing outside the resonance. I haven't had = the=20 tuning-meter (U,I, phase) in line, and just tuned the shack-internal = variometer=20 for a maximum signal.
After the unwanted fault and replacing the FET = i had to=20 find other problems like a non conducting shunt resistor (current = sensing). This=20 wasn't visible. For some reason the current limiting didn't work then. A = second=20 loud BAAAAAAANG caused me to let it be for this week! Now two = mains fuses=20 here at QRL are OFF and i don't have the key to put them in again. =
Anyway,=20 i'm in holiday for the next 2 weeks and they will be back in when i am = back and=20 no one will remember that, hopefully, hi.

Actually all that = stuff should=20 be exchanges in a QSO :-) BTW how about YOUR PA? :-)

73,=20 Stefan/DK7FC

Now trying to bring the coil back to its previous=20 L...

 
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