Return-Path: Received: from mtain-di09.r1000.mx.aol.com (mtain-di09.r1000.mx.aol.com [172.29.64.13]) by air-ma01.mail.aol.com (v129.4) with ESMTP id MAILINMA012-b4f04cc74367315; Tue, 26 Oct 2010 17:08:55 -0400 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-di09.r1000.mx.aol.com (Internet Inbound) with ESMTP id ADAE1380001A5; Tue, 26 Oct 2010 17:08:53 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1PAqjm-0007ow-PD for rs_out_1@blacksheep.org; Tue, 26 Oct 2010 22:07:18 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1PAqjm-0007on-4l for rsgb_lf_group@blacksheep.org; Tue, 26 Oct 2010 22:07:18 +0100 Received: from relay.uni-heidelberg.de ([129.206.100.212]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1PAqjl-0006v7-8K for rsgb_lf_group@blacksheep.org; Tue, 26 Oct 2010 22:07:18 +0100 Received: from ix.urz.uni-heidelberg.de (cyrus-portal.urz.uni-heidelberg.de [129.206.100.176]) by relay.uni-heidelberg.de (8.14.1/8.14.1) with ESMTP id o9QL6evI016818 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Tue, 26 Oct 2010 23:06:40 +0200 Received: from extmail.urz.uni-heidelberg.de (extmail.urz.uni-heidelberg.de [129.206.100.140]) by ix.urz.uni-heidelberg.de (8.13.8/8.13.8) with ESMTP id o9QL7FEo017750 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Tue, 26 Oct 2010 23:07:15 +0200 Received: from [147.142.9.71] (vpn509-071.rzuser.uni-heidelberg.de [147.142.9.71]) by extmail.urz.uni-heidelberg.de (8.13.4/8.13.1) with ESMTP id o9QL6mFE026215 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Tue, 26 Oct 2010 23:06:50 +0200 Message-ID: <4CC74304.3090903@iup.uni-heidelberg.de> Date: Tue, 26 Oct 2010 23:07:16 +0200 From: =?ISO-8859-2?Q?Stefan_Sch=E4fer?= User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; de; rv:1.9.1.11) Gecko/20100711 Thunderbird/3.0.6 MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org X-Spam-Score: 1.6 (+) X-Spam-Report: autolearn=disabled,HTML_MESSAGE=0.001,HTML_TAG_EXIST_TBODY=0.126,RATWARE_GECKO_BUILD=1.426 Subject: Fwd: Re: VLF: DK7FC's 8th VLF kite experiment Content-Type: multipart/alternative; boundary="------------000501010400080001050301" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.6 required=5.0 tests=HTML_20_30,HTML_MESSAGE, HTML_TAG_EXISTS_TBODY 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-sid: 3039ac1d400d4cc743651a35 X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none X-Mailer: Unknown (No Version) --------------000501010400080001050301 Content-Type: text/plain; charset=ISO-8859-2; format=flowed Content-Transfer-Encoding: quoted-printable X-MIME-Autoconverted: from 8bit to quoted-printable by relay.uni-heidelberg.de id o9QL6evI016818 Dear VLF, Attached you find the results of Paul Nicholson of my 8th VLF=20 experiment. Interesting links and he seems to confirm that my frequency=20 is pretty accurate now ;-) Furthermore the first part gives an idea of future planned VLF tests i=20 hope to do on my earth antenna :-) 73, enjoy, Stefan7DK7FC -------- Original-Nachricht -------- Betreff: Re: VLF: DK7FC's 8th VLF kite experiment Datum: Tue, 26 Oct 2010 20:10:58 +0000 Von: Paul An: Stefan Sch=E4fer CC: Markus Vester , Wolfgang B=FCscher=20 , Renato Romero Hi Stefan, et al My report of your test on Saturday is below. > What do you think about a test on the earth antenna, > this week? We should have a good think about what tests would be useful to do. For example, to measure the propagation delay using a chirped transmission (this would move us a step closer towards the goal of putting a signal through a whistler duct). I am probably too far away to take part in such a test. First transmission 2010-10-23_08:03, 3600 seconds ------------------------------------------------- Background @ 8970: http://abelian.org/vlf/ss101023/noise8970.png Before sferic blanking: http://abelian.org/vlf/ss101023/tx1a.png After sferic blanking: http://abelian.org/vlf/ss101023/tx1b.png Average frequency: 8969.974924 Hz +/- 1uHz Absolute phase, measured in 5 minute blocks over 50 minutes: -151.049 -137.833 -143.681 -113.856 -112.387 -131.829 -117.567 -133.994 -137.574 -119.973 Suggests the transmitter phase is switching between 2 values, about 20 degrees apart. Spectrum shows some weak sidebands. Second transmission 2010-10-23_10:33, 1680 seconds -------------------------------------------------- Background @ 6470: http://abelian.org/vlf/ss101023/noise6470.png Before sferic blanking: http://abelian.org/vlf/ss101023/tx2a.png After sferic blanking: http://abelian.org/vlf/ss101023/tx2b.png Average frequency: 6469.974916 Hz +/-1uHz Absolute phase, measured in 5 minute blocks over 25 minutes: -141.539 -153.483 -150.903 -155.623 -157.098 Third transmission 2010-10-23_13:21, 2220 seconds ------------------------------------------------- Background @ 5170: http://abelian.org/vlf/ss101023/noise5170.png Before sferic blanking: http://abelian.org/vlf/ss101023/tx3a.png After sferic blanking: http://abelian.org/vlf/ss101023/tx3b.png Average frequency: 5169.999969 Hz +/-1uHz Notes ----- The spike in the 8970Hz noise chart at 16:05 is the current injection calibrator and at 16:30 the gain of the E/W loop was adjusted. Vertical scale refers to the calibration before the gain change. The average frequencies are all on the low side, by between 6ppb and 12ppb. -- Paul Nicholson -- --------------000501010400080001050301 Content-Type: text/html; charset=ISO-8859-2 Content-Transfer-Encoding: quoted-printable X-MIME-Autoconverted: from 8bit to quoted-printable by relay.uni-heidelberg.de id o9QL6evI016818 Dear VLF,

Attached you find the results of Paul Nicholson of my 8th VLF experiment. Interesting links and he seems to confirm that my frequency is pretty accurate now ;-)
Furthermore the first part gives an idea of future planned VLF tests i hope to do on my earth antenna :-)

73, enjoy,

Stefan7DK7FC

-------- Original-Nachricht --------
Betreff:= Re: VLF: DK7FC's 8th VLF kite experiment
Datum: Tue, 26 Oct 2010 20:10:58 +0000
Von: Paul <paul@abelian.netcom.co.uk>
An: Stefan Sch=E4fer <schaefer@iup.uni-heidelberg.de><= /a>
CC: Markus Vester <markusvester@aol.com>, Wolfgang B=FCscher <d= l4yhf@freenet.de>, Renato Romero <contact@vlf.it> 


Hi Stefan, et al

My report of your test on Saturday is below.

> What do you think about a test on the earth antenna,
> this week?

We should have a good think about what tests would be
useful to do.  For example, to measure the propagation
delay using a chirped transmission (this would move us
a step closer towards the goal of putting a signal
through a whistler duct).  I am probably too far away
to take part in such a test.

First transmission 2010-10-23_08:03, 3600 seconds
-------------------------------------------------
Background @ 8970:  http://abelian.org/vlf/ss101023/noise8=
970.png
Before sferic blanking: http://abelian.org/vlf/ss101023/tx1a.pn=
g
After sferic blanking: http://abelian.org/vlf/ss101023/tx1b.png=

Average frequency: 8969.974924 Hz +/- 1uHz

Absolute phase, measured in 5 minute blocks over 50 minutes:
 -151.049
 -137.833
 -143.681
 -113.856
 -112.387
 -131.829
 -117.567
 -133.994
 -137.574
 -119.973
Suggests the transmitter phase is switching between 2 values,
about 20 degrees apart.  Spectrum shows some weak sidebands.

Second transmission 2010-10-23_10:33, 1680 seconds
--------------------------------------------------
Background @ 6470:  http://abelian.org/vlf/ss101023/noise6=
470.png
Before sferic blanking: http://abelian.org/vlf/ss101023/tx2a.pn=
g
After sferic blanking: http://abelian.org/vlf/ss101023/tx2b.png=

Average frequency: 6469.974916 Hz +/-1uHz

Absolute phase, measured in 5 minute blocks over 25 minutes:
 -141.539
 -153.483
 -150.903
 -155.623
 -157.098

Third transmission 2010-10-23_13:21, 2220 seconds
-------------------------------------------------
Background @ 5170:  http://abelian.org/vlf/ss101023/noise5=
170.png
Before sferic blanking: http://abelian.org/vlf/ss101023/tx3a.pn=
g
After sferic blanking: http://abelian.org/vlf/ss101023/tx3b.png=

Average frequency: 5169.999969 Hz +/-1uHz

Notes
-----
The spike in the 8970Hz noise chart at 16:05 is the current injection
calibrator and at 16:30 the gain of the E/W loop was adjusted.  Vertical
scale refers to the calibration before the gain change.

The average frequencies are all on the low side, by between
6ppb and 12ppb.
--
Paul Nicholson
--
--------------000501010400080001050301--