Return-Path: X-Spam-DCC: paranoid 1102; Body=2 Fuz1=2 Fuz2=2 X-Spam-Checker-Version: SpamAssassin 3.1.3 (2006-06-01) on lipkowski.org X-Spam-Level: X-Spam-Status: No, score=-1.2 required=5.0 tests=BAYES_00,DNS_FROM_AHBL_RHSBL, HTML_50_60,HTML_MESSAGE,SPF_PASS,SUBJ_ALL_CAPS autolearn=no version=3.1.3 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by paranoid.lipkowski.org (8.13.7/8.13.7) with ESMTP id u4DI8V1a025420 for ; Fri, 13 May 2016 20:08:31 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1b1HPy-0002IF-Iz for rs_out_1@blacksheep.org; Fri, 13 May 2016 19:02:30 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1b1HPx-0002I6-Vb for rsgb_lf_group@blacksheep.org; Fri, 13 May 2016 19:02:29 +0100 Received: from omr-a015e.mx.aol.com ([204.29.186.63]) by relay1.thorcom.net with esmtps (TLSv1:DHE-RSA-AES256-SHA:256) (Exim 4.87) (envelope-from ) id 1b1HPt-0006GY-MV for rsgb_lf_group@blacksheep.org; Fri, 13 May 2016 19:02:28 +0100 Received: from mtaout-aae01.mx.aol.com (mtaout-aae01.mx.aol.com [172.27.1.97]) by omr-a015e.mx.aol.com (Outbound Mail Relay) with ESMTP id 5D93A3800094 for ; Fri, 13 May 2016 14:02:23 -0400 (EDT) Received: from [IPv6:::ffff:192.168.0.11] (ipbcc05f3c.dynamic.kabel-deutschland.de [188.192.95.60]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mtaout-aae01.mx.aol.com (MUA/Third Party Client Interface) with ESMTPSA id 9ED1D38000082 for ; Fri, 13 May 2016 14:02:22 -0400 (EDT) MIME-Version: 1.0 To: "rsgb_lf_group@blacksheep.org" From: Markus Vester Date: Fri, 13 May 2016 20:02:22 +0200 Importance: normal X-Priority: 3 In-Reply-To: <57360A01.8080302@posteo.de> References: <40b8e5c6692149a7911fe77631ebb33b@kabelmail.de> <572BB679.2040107@posteo.de> <572BE449.5010806@abelian.org> <279E0DEFDAFA4C849152DBBA3BFEDE8C@White> <572C5E72.7010404@posteo.de> <912731037.20160506233059@mterrier.net> <572D1111.9030302@posteo.de> <572D9843.7060402@abelian.org> <572DBBD3.3020709@posteo.de> <572DC660.5050007@abelian.org> <572E4BF7.1060103@posteo.de> <572F9120.2010200@abelian.org> <5732F442.2050105@posteo.de> <5732F9E8.1090604@abelian.org> <57343F5D.5030502@posteo.de> <5734D996.8080203@abelian.org> <57351A13.3050802@posteo.de> <4619df50-a672-49c1-0c7b-5c4e09929e9e@mbsks.franken.de> <5735FF13.7070505@posteo.de> <57360A01.8080302@posteo.de> x-aol-global-disposition: G DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=mx.aol.com; s=20150623; t=1463162543; bh=X94Y+N2PtD4ZLRdIbXXgGCTxr2RdCpEqnP9VSnFc9e4=; h=From:To:Subject:Date:MIME-Version:Content-Type; b=AcUQ5L6th5J+Y5JZkrxHyQjA3gOUfrpOOXv8Nv3sXmCi0pxqx3HR2sJ0/n5EBJNu0 f7CzimrNBrsygaZXOPUEvxq8/j1YfUUP7zePdrc3yRO/Tsr5fAEIOXEwbCCJB8kLVg JUwguXo6wnhdPG7BUOUg6mBU5B3Mvcz38tluGy74= x-aol-sid: 3039ac1b0161573616ae22e3 X-AOL-IP: 188.192.95.60 X-Scan-Signature: 55db901127f87fafbf8ae301dac99c44 Message-Id: Subject: AW: VLF: 8.27 Content-Type: multipart/alternative; boundary="_27AD9F6F-07A9-4C17-A330-B41CED2F5A4F_" 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-Scanned-By: MIMEDefang 2.56 on 10.1.3.11 Status: O X-Status: X-Keywords: X-UID: 8050 --_27AD9F6F-07A9-4C17-A330-B41CED2F5A4F_ Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Nice work, Roland! Your carrier has been very steady here, and precisely on= frequency. The dash at DK7FC 47 uHz is also very clear, and the early end = is probably due to the well known midday propagation dip.=20 It looks like later around 16 UT, Stefan=E2=80=98s preamp in the tree might= have failed perhaps due to nearby lightning.=20 No trace at the OK2BVG grabber. This is normally very sensitive, but curren= tly the MSK=E2=80=99s look unusually weak there as well. =20 All the best, Markus Von: DK7FC Gesendet: Freitag, 13. Mai 2016 19:10 An: rsgb_lf_group@blacksheep.org Betreff: Re: VLF: 8.27 Hi Roland, Am 13.05.2016 18:48, schrieb Roland Bruestle:=20 Hello Stefan, ok, it should be 8270kHz. I assume you mean 8270 Hz. I have now decreased the turns on the primary winding. As long as the transformer stays cool, you can do this. But for higher powe= r levels it may be better to add more turns on the secondary winding. You n= eed to watch it. The antenna current is now 350mA, input power to the PA is 150W. Cooler temperature remains still 37=C2=B0C. The transmission is finished since 15:00 UTC. I hope you can give me some r= eport. Are you using a Mini Whip for receiving? I will try to receive you on you n= ext transmissions. As i wrote, i am using a loop into E-W direction.=20 Oh, i just wanted to ask if you know you signal accuracy but now i saw your= signal on the DF6NM VLF grabber. It has been on the air for about one day = and it looks absolutely stable. I also see a dash on the right frequency in= my 47 uHz window but it disappeared during the time of low QRN. I can even= see a faint trace in the 424 uHz window. I guess Paul will have even bette= r traces. Now what are your plans, what would you like to do there? Carriers, DFCW, E= bNaut? Ah and BTW, now your antenna C has rised since you improved the antenna. So= you must have reduced the L. Do you have enough L available to go to 6470 = Hz? It would be interesting to see if the daytime propagation on our short = path is better there. I will soon move to 5170 Hz, so the frequency would be clean for you :-) 73, Stefan PS: My peak hold graph was set wrong in the 47 uHz window. It is now update= d and shows the highest peak of the last 3 days. 73, =C2=A0Roland=20 Am 13.05.2016 um 18:21 schrieb DK7FC: Hello Roland,=20 8170kHz? I have the EW loop connected on the tree. Don't hesitate to run a carrier d= uring the morning hours, 4...10 UTC is a good time as you can see. With som= e luck i will see you in the 424 uHz window. That would be remarkable. 73, GL, Stefan Am 13.05.2016 09:36, schrieb Roland Bruestle:=20 Hello Markus, Stefan, Paul, I'm back at 8170kHz and using now a class D Amplifier. You can see me at Ma= rkus Grabber. Amplifier : max. power on 2 Ohm: 500W mac. power on 4 Ohm: 250W Power supply range. 20..48V Switching frequency: 400kHz IC: Texas DTA8950 IC is fan cooled Price,=C2=A0 mono mode: Ebay, 50 =E2=82=AC My actual values: Power supply: 30V, 3A =3D 90W PA output about 80W Antenna current: 250mA Temperature of cooler: 37=C2=B0C Fan mostly switched off For more power I have to increase the voltage of power supply or to lower t= he primary turns of the transformer. 300Ws should be not a problem. For receiving I wont to use a min whip. I hope that the noise is not to hig= h. 73 Roland DL3NDR --_27AD9F6F-07A9-4C17-A330-B41CED2F5A4F_ Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset="utf-8"

Nice work, Roland! Your carrier has be= en very steady here, and precisely on frequency. The dash at DK7FC 47 uHz i= s also very clear, and the early end is probably due to the well known midd= ay propagation dip.

 

It looks like later around 16 UT, Stefan=E2=80=98s preamp in t= he tree might have failed perhaps due to nearby lightning.

 

No trace at the OK2BVG g= rabber. This is normally very sensitive, but currently the MSK=E2=80=99s lo= ok unusually weak there as well.

All the best,

Markus

 

 

 

 

Von: DK= 7FC
Gesendet: Freitag, 13. Mai 2016 19:10
An: rsgb_lf_group@blacksheep.org=
Betreff: Re: VLF: 8.27

 =

Hi Roland,

Am 13.05.2016 18:48, schrieb Ro= land Bruestle:

Hello Stefan,
ok, it should be= 8270kHz.

I assume y= ou mean 8270 Hz.

I have now decreased the<= /span> turns on the primary winding.

As long as the = transformer stays cool, you can do this. But for higher power levels it may= be better to add more turns on the secondary winding. You need to watch it= .

The antenna current is now 350mA, input power to the PA is 150W.<= /tt>
Cool= er temperature remains still 37=C2=B0C.
The transmission is fin= ished since 15:00 UTC. I hope you can give me some report.
Are = you using a Mini Whip for receiving? I will try to receive you on you next = transmissions.

As i wrote, i am using a loop into E-W direction.

Oh, i just wante= d to ask if you know you signal accuracy but now i saw your signal on the D= F6NM VLF grabber. It has been on the air for about one day and it looks abs= olutely stable. I also see a dash on the right frequency in my 47 uHz windo= w but it disappeared during the time of low QRN. I can even see a faint tra= ce in the 424 uHz window. I guess Paul will have even better traces.
Now what are your plans, what would you like to do there? Carriers, DFCW, = EbNaut?
Ah and BTW, now your antenna C has rised since you improved the = antenna. So you must have reduced the L. Do you have enough L available to = go to 6470 Hz? It would be interesting to see if the daytime propagation on= our short path is better there.
I will soon move to 5170 Hz, so the fre= quency would be clean for you :-)

73, Stefan

PS: My peak hold= graph was set wrong in the 47 uHz window. It is now updated and shows the = highest peak of the last 3 days.


73,
 Roland
<= span style=3D'font-size:12.0pt;font-family:"Times New Roman",serif'>
Am = 13.05.2016 um 18:21 schrieb DK7FC:

Hello Roland, =

8170kHz?
I have the EW loop connected on the tree. Don't hesitat= e to run a carrier during the morning hours, 4...10 UTC is a good time as y= ou can see. With some luck i will see you in the 424 uHz window. That would= be remarkable.

73, GL, Stefan

Am 13.05.2016 09:36, schrieb R= oland Bruestle:

Hello Markus, Stefan, Paul,
I'm bac= k at 8170kHz and using now a class D Amplifier. You can see me at Markus Gr= abber.
Amplifier :
max. power on 2 Ohm: 500W
mac. power on 4 Ohm: = 250W
Power supply range. 20..48V
Switching frequency: 400kHz
IC: T= exas DTA8950
IC is fan cooled
Price,  mono mode: Ebay, 50 =E2=82= =AC

My actual values:
Power supply: 30V, 3A =3D 90W
PA output = about 80W
Antenna current: 250mA
Temperature of cooler: 37=C2=B0C
= Fan mostly switched off

For more power I have to increase the voltag= e of power supply or to lower the primary turns of the transformer.
300W= s should be not a problem.

For receiving I wont to use a min whip. I= hope that the noise is not to high.

73
Roland DL3NDR<= /span>

 

 

= --_27AD9F6F-07A9-4C17-A330-B41CED2F5A4F_--