Return-Path: Received: from rly-ma04.mx.aol.com (rly-ma04.mail.aol.com [172.20.116.48]) by air-ma09.mail.aol.com (v121_r5.5) with ESMTP id MAILINMA091-89f4957a78d139; Sun, 28 Dec 2008 11:21:54 -0500 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by rly-ma04.mx.aol.com (v121_r4.4) with ESMTP id MAILRELAYINMA041-89f4957a78d139; Sun, 28 Dec 2008 11:21:36 -0500 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1LGyOP-0001Ma-UO for rs_out_1@blacksheep.org; Sun, 28 Dec 2008 16:21:29 +0000 Received: from [83.244.159.144] (helo=relay3.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1LGyOP-0001MM-5W for rsgb_lf_group@blacksheep.org; Sun, 28 Dec 2008 16:21:29 +0000 Received: from mk-filter-2-a-1.mail.uk.tiscali.com ([212.74.100.53]) by relay3.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1LGyOK-00075S-9e for rsgb_lf_group@blacksheep.org; Sun, 28 Dec 2008 16:21:29 +0000 X-Trace: 123887669/mk-filter-2.mail.uk.tiscali.com/B2C/$b2c-THROTTLED-DYNAMIC/b2c-CUSTOMER-DYNAMIC-IP/88.106.121.196/None/g4wgt@tiscali.co.uk X-SBRS: None X-RemoteIP: 88.106.121.196 X-IP-MAIL-FROM: g4wgt@tiscali.co.uk X-MUA: Microsoft Office Outlook 11Produced By Microsoft MimeOLE V6.00.2900.3350 X-IP-BHB: Once X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: Avg/AHc2V0lYannE/2dsb2JhbACCQytUQIYHgS6BfK9pWI5uBoY+ X-IronPort-AV: E=Sophos;i="4.36,292,1228089600"; d="scan'208,217";a="123887669" Received: from 88-106-121-196.dynamic.dsl.as9105.com (HELO asus) ([88.106.121.196]) by smtp.tiscali.co.uk with ESMTP; 28 Dec 2008 16:21:17 +0000 From: "Gary - G4WGT" To: References: <005a01c968ff$2a99ee10$6401a8c0@asus> <2AE02D153B264F6D83CE8993AEA5F44E@AGB> Date: Sun, 28 Dec 2008 16:21:16 -0000 Message-ID: <008501c96908$4f961320$6401a8c0@asus> MIME-Version: 1.0 X-Mailer: Microsoft Office Outlook 11 In-Reply-To: <2AE02D153B264F6D83CE8993AEA5F44E@AGB> X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3350 Thread-Index: AclpAV1rRo0jF0jjQE+N18Dhv9wmLQAAnCSg X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,HTML_MESSAGE=0.001 Subject: RE: LF: 500KHz QSB Content-Type: multipart/alternative; boundary="----=_NextPart_000_0086_01C96908.4F961320" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.2 required=5.0 tests=HTML_70_80, HTML_FONTCOLOR_UNKNOWN,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-IP: 193.82.116.20 ------=_NextPart_000_0086_01C96908.4F961320 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit Hi Rik & Graham, Thanks for the replies. All understood now, the screen shot certainly shows it up. I didn't relate multi path fading to what I was seeing on the display as I am normally used to seeing/hearing single narrow signals fading differently from different sources. So I hope I am correct in saying that with the three distinct signals from the NDB the additive & subtractive properties of each multi path signal even though closely related in frequency will react so noticeably differently at the receiver even from the same source. I missed Grahams report on the UK500KHZ group. 73 Gary - G4WGT. _____ From: owner-rsgb_lf_group@blacksheep.org [mailto:owner-rsgb_lf_group@blacksheep.org] On Behalf Of Graham Sent: 28 December 2008 15:30 To: rsgb_lf_group@blacksheep.org Subject: Re: LF: 500KHz QSB Gary, I assume its selective fading , you can see it at 100 Hz separation at > > http://groups.google.com/group/uk500khz/web/propagation add the shot with a few pointers ? G .. Nb .. check out the 500 band in those day's , no mal-adjusted cw signals right in the middle ! From: Gary - G4WGT Sent: Sunday, December 28, 2008 3:15 PM To: LF -RSGB LF Group Subject: LF: 500KHz QSB Hi LF, Just made an interesting observation regarding QSB at 508KHz. For my own benefit I have started running a slow SpecLab showing 500 to 510KHz & capturing for evaluation. Occasionally the NDB "Z" shows up. The strange thing is that even though the carrier on 508KHz & the two ID offsets at 509 & 507KHz are relatively close they each display at different depth of fading or an out of phase fade pattern. I am unsure why this should be, any comments please, see capture at link :- http://myweb.tiscali.co.uk/wgtaylor/ZNDB.jpg 73, Gary - G4WGT - IO83QP. _____ No virus found in this incoming message. Checked by AVG - http://www.avg.com Version: 8.0.176 / Virus Database: 270.10.0/1866 - Release Date: 12/27/2008 20:49 ------=_NextPart_000_0086_01C96908.4F961320 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable

Hi Rik & Graham,

&nb= sp;

Thanks for the replies.

&nb= sp;

All understood now, the screen shot certainly shows it up.

&nb= sp;

I didn&#= 8217;t relate multi path fading to what I was seeing on the display as I am normall= y used to seeing/hearing single narrow signals  fading differently from different sources. So I hope I am correct in saying that with the three distinct signals from the NDB the additive & subtractive properties of e= ach multi path signal even though closely related in frequency will react so noticeably differently at the receiver even from the same source.=

&nb= sp;

I missed Grahams report on the UK500KHZ group.

&nb= sp;

73<= /o:p>

&nb= sp;

Gary = 211; G4WGT.

&nb= sp;

From: owner-rsgb_lf_group@blacksheep.org [mailto:owner-rsgb_lf_group@blacksheep.org] On Behalf Of Graham
Sent: 28 December 2008 15:30<= br> To: rsgb_lf_group@blacksheep.org
Subject: Re: LF: 500KHz QSB

 

Gary<= /span>,

 

I assume its selective fading , you can see it at 1= 00 Hz separation at >

 

 

add the shot with a few pointers ?

 

G ..

 

Nb ..  check out the 500 band in those day's ,= no mal-adjusted cw signals

right in the middle !

 

 

 

Sent: Sunday, December 28, 2008 3:15 PM

Subject: LF: 500KHz QSB

 

Hi LF,=

 =

Just made an interesting observ= ation regarding QSB at 508KHz.

 =

For my own benefit I have start= ed running a slow SpecLab showing 500 to 510KHz & capturing for evaluation.

 =

Occasionally the NDB “Z&#= 8221; shows up. The strange thing is that even though the carrier on 508KHz & the tw= o ID offsets at 509 & 507KHz are relatively close they each display at different depth of fading or an out of phase fade pattern.=

 =

I am unsure why this should be,= any comments please, see capture at link :-

 =

http://myweb.tiscali.co.uk/wgta= ylor/ZNDB.jpg

 =

73,

 

Gary - G4WGT - IO83QP.=

 


No virus found in this incoming message.
Checked by AVG - http://www.avg.com
Version: 8.0.176 / Virus Database: 270.10.0/1866 - Release Date: 12/27/2008 20:49

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