Return-Path: Received: from mtain-mp10.r1000.mx.aol.com (mtain-mp10.r1000.mx.aol.com [172.29.193.78]) by air-dc07.mail.aol.com (v129.4) with ESMTP id MAILINDC074-86a54d5407fe1c; Thu, 10 Feb 2011 10:45:02 -0500 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-mp10.r1000.mx.aol.com (Internet Inbound) with ESMTP id 5B7CA38000591; Thu, 10 Feb 2011 10:45:01 -0500 (EST) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1PnYgr-0007iJ-Iz for rs_out_1@blacksheep.org; Thu, 10 Feb 2011 15:44:17 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1PnYgr-0007iA-4S for rsgb_lf_group@blacksheep.org; Thu, 10 Feb 2011 15:44:17 +0000 Received: from out1.ip02ir2.opaltelecom.net ([62.24.128.238]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1PnYgn-0001Er-GP for rsgb_lf_group@blacksheep.org; Thu, 10 Feb 2011 15:44:17 +0000 X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: Am0BAMqWU01cHYUN/2dsb2JhbACCS5Bdg2U/jh1zujiFXASBY41ignI X-IronPort-AV: E=Sophos;i="4.60,451,1291593600"; d="scan'208,217";a="355341494" Received: from unknown (HELO xphd97xgq27nyf) ([92.29.133.13]) by out1.ip02ir2.opaltelecom.net with SMTP; 10 Feb 2011 15:44:07 +0000 Message-ID: <00b201cbc939$59e94610$0401a8c0@xphd97xgq27nyf> From: "mal hamilton" To: References: <988315.45122.qm@web28515.mail.ukl.yahoo.com> Date: Thu, 10 Feb 2011 15:44:06 -0000 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2600.0000 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2600.0000 X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,HTML_MESSAGE=0.001 Subject: LF: Re: VLF Transmissions - G3XIZ - 12th / 13th February Content-Type: multipart/alternative; boundary="----=_NextPart_000_00AF_01CBC939.59AB52B0" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.8 required=5.0 tests=HTML_30_40,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 x-aol-global-disposition: G x-aol-sid: 3039ac1dc14e4d5407fc11d3 X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none ------=_NextPart_000_00AF_01CBC939.59AB52B0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Chris What value is ur loading coil and is it ferrite or air core type, and= what type of coupling from amp to coil. mal/g3kev ----- Original Message -----=20 From: Chris Osborn=20 To: LF Group=20 Sent: Thursday, February 10, 2011 2:42 PM Subject: LF: VLF Transmissions - G3XIZ - 12th / 13th February LF, I have had permission to transmit on VLF this coming weekend: 12th= and 13th February. Weather permitting I shall try again with my balloon-launched aerial= , hopefully about 50m vertical. The frequency will be=20 8.976 66 kHz (i.e. 10.000 MHz / 1114) and is derived from an oven= controlled xtal oscillator. Hopefully the frequency will be more stable than last time. If this frequency proves unsuitable I can transmit on 10.000 MHZ /= 1112 . .10.000 MHz / 1116 etc. I shall send a continuous carrier as and when conditions permit. My newly built VLF TX is working well and can deliver about 150 watt= s of RF. On this occasion I shall be using the original (fairly lossy) loadin= g coil but am presently making a more efficient one. All reports will be most welcome. 73 Chris G3XIZ ------=_NextPart_000_00AF_01CBC939.59AB52B0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Chris
What value is ur loading coil and is it ferrit= e or air=20 core type, and what type of coupling from amp to coil.
mal/g3kev
 
 
----- Original Message -----
From:=20 Chris= Osborn=20
Sent: Thursday, February 10,= 2011 2:42=20 PM
Subject: LF: VLF Transmission= s - G3XIZ -=20 12th / 13th February

LF,
 
I have had permission to transmit on VLF this coming weekend:= 12th and=20 13th February.
Weather permitting I shall try again with my balloon-launched= aerial,=20 hopefully about 50m vertical.
 
The frequency will be
 
8.976 66 kHz  (i.e. 10.000 MHz / 1114) an= d is=20 derived from an oven controlled xtal oscillator.
Hopefully the frequency will be more stable than last time.
If this frequency proves unsuitable I can transmit on 10.000 MH= Z / 1112 .=20 .10.000 MHz / 1116  etc.
 
I shall send a continuous carrier as and when conditions permit= .
 
My newly built VLF TX is working well and can deliver about 150= watts of=20 RF.
On this occasion I shall be using the original (fairly lossy)= loading=20 coil but am presently making a more efficient one.
 
All reports will be most welcome.
 
73
Chris G3XIZ
 
 

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