Return-Path: Received: from rly-me04.mx.aol.com (rly-me04.mail.aol.com [172.20.83.38]) by air-me04.mail.aol.com (v123.3) with ESMTP id MAILINME041-9ad49bac9ba4c; Fri, 13 Mar 2009 17:02:07 -0400 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by rly-me04.mx.aol.com (v123.3) with ESMTP id MAILRELAYINME041-9ad49bac9ba4c; Fri, 13 Mar 2009 17:01:50 -0400 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1LiEVS-0005H4-Lw for rs_out_1@blacksheep.org; Fri, 13 Mar 2009 21:01:26 +0000 Received: from [193.82.116.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1LiEVS-0005Gv-1u for rsgb_lf_group@blacksheep.org; Fri, 13 Mar 2009 21:01:26 +0000 Received: from smtp5.freeserve.com ([193.252.22.152]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1LiEVP-0000f3-83 for rsgb_lf_group@blacksheep.org; Fri, 13 Mar 2009 21:01:26 +0000 Received: from me-wanadoo.net (localhost [127.0.0.1]) by mwinf3426.me.freeserve.com (SMTP Server) with ESMTP id 6F5911C00085 for ; Fri, 13 Mar 2009 22:01:17 +0100 (CET) Received: from AGB (unknown [91.110.92.90]) by mwinf3426.me.freeserve.com (SMTP Server) with SMTP id E55631C00083 for ; Fri, 13 Mar 2009 22:01:16 +0100 (CET) X-ME-UUID: 20090313210116939.E55631C00083@mwinf3426.me.freeserve.com Message-ID: <6B0A0CA1E91F4B768C0B49F4287EC0F8@AGB> From: "Graham" To: References: In-Reply-To: Date: Fri, 13 Mar 2009 21:01:15 -0000 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal Importance: Normal X-Mailer: Microsoft Windows Live Mail 14.0.8064.206 X-MimeOLE: Produced By Microsoft MimeOLE V14.0.8064.206 X-Karma: unknown: X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,HTML_MESSAGE=0.001 Subject: Re: LF: Re: Multi-function beacon Content-Type: multipart/alternative; boundary="----=_NextPart_000_0059_01C9A41E.D96AA970" 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, 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-IP: 193.82.116.20 ------=_NextPart_000_0059_01C9A41E.D96AA970 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Andy, Just a note, the latest plots are listed on :- http://groups.google.com/group/uk500khz/web/propagation Andy - KU4XR is also setting up to night=20 Tnx - G ..=20 From: Andy Talbot=20 Sent: Friday, March 13, 2009 10:57 AM To: rsgb_lf_group@blacksheep.org ; uk_beacons@yahoogroups.com=20 Subject: LF: Re: Multi-function beacon Just a reminder to all - this beacon is still going, and will probably conti= nue to do so until further notice. A few listeners have downloaded the sof= tware, and thanks to all (you know who your are :-) for the plots / listings= . I am not in a position to compile them, so don't expect revelations, but= Gerhard / DK6NI has been monitoring pretty well continuously, and has plo= tted some deep fades / enhancements measured over hours with depths in the r= egions of 30dB. Are there any stations in the US in a position to monitor ? =20 Please note that if using the recommended 5meg beacon monitoring software yo= u'll either have to set the delta time to -240 (or -180 or -120) seconds or=20= adjust the PC clock by two, three or four minutes to cope with the four minu= te offset I'm running it on. Andy G4JNT www.g4jnt.com =20 2009/3/6 Andy Talbot I've now started transmitting a timed beacon signal on 503.7kHz that is i= dentical in format to that of GB3SSS operated over the winter months of the=20= last two years from Poldhu on 1.9 and 3.5MHz, and has a similar signal str= ucture to the 5MHz beacons, GB3RAL, WES and ORK. These all have an initial=20= CW ident and stepped power levels for aural reception, and a precisely defin= ed period of full-power plain carrier for S/N measurements. =20 See http://www.rsgb-spectrumforum.org.uk/5mhz%20beacons.htm for the com= plete 5MHz signal structure. For this MF transmission, as on GB3SSS, the p= ulsed sounder sequence of the 5MHz beacons is replaced with a PSK31 message=20= which lasts from 30s to approx 48 seconds after the start Auto Monitoring software writen by G3PLX is available for monitoring these= beacons, it measures signal to noise during the carrier period and saves to= file as well as plotting the last 40 hours worth of measurements. The software can be downloaded from http://www.rsgb.org/spectrumforum/hf/= beaconauto.php . PSK31 data can be copied with Digipan, Fldigi, PSK31SBW o= r a host of other packages. TIMING=20 The 503.7kHz transmission takes place every 15 minutes at 4 minutes past t= he quarter hour. =20 ie each transmission starts at xx:04, xx:19, xx:34 and xx:49 This time=20= slot has been selected so that the transmission do not interfere with my con= tinuous ongoing reception of the 5Mhz beacons - the active antenna used for=20= these is overloaded by the 500kHz signal and I have already lost data when t= he WSPR beacon transmission coincided with one of the monitoring windows. NOTE If using the G3PLX software, this only monitors for the three 5MHz=20= beacons at 00, 01 and 02 minutes. SO IT WILL BE NECESSARY TO FRIG THE SOFTWARE to monitor this transmission= at the 04 minute point. The necessary alteration can be done by firstly s= etting your PC clock accurately to the correct time, then setting the Track=20= Time box to -240 (minus 240 seconds). This will make the software look for=20= this transmission during the time window it thinks it would be receiving GB3= RAL, and log the MF transmission during the first minute, on the red trace,=20= as if it were GB3RAL=20 The beacon uses the identical hardware to the WSPR transmissions of the la= st few weeks, with the the only change being a reprogramming of the controll= er PIC. In fact the very same hardware was previously loaned to the Poldhu= club for their beacons, with the only difference being a change to the fina= l Low Pass filter on the output of the broadband PA. ----------------------------------------------------------------------------= ---- No virus found in this incoming message. Checked by AVG - www.avg.com=20 Version: 8.0.237 / Virus Database: 270.11.13/1999 - Release Date: 03/13/09 0= 5:59:00 ------=_NextPart_000_0059_01C9A41E.D96AA970 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
 
Andy,
 
Just a note, the latest plots  ar= e listed=20 on :-
 
 
 
Andy - KU4XR  is also setting up to night
 
Tnx - G ..
 
 

Sent: Friday, March 13, 2009 10:57 AM
Subject: LF: Re: Multi-function beacon

Just a reminder to all - this beacon is still going, and will probably=20 continue to do so until further notice.   A few listeners have=20 downloaded the software, and thanks to all (you know who your are :-) for th= e=20 plots / listings.   I am not in a position to compile them, so don= 't=20 expect revelations, but Gerhard  /  DK6NI has been monitoring pret= ty=20 well continuously, and has plotted some deep fades / enhancements=20 measured over hours with depths in the regions of 30dB.
 
Are there any stations in the US in a position to monitor=20 ?  
 
Please note that if using the recommended 5meg beacon monitoring softwa= re=20 you'll either have to set the delta time to -240 (or -180 or -120) seconds o= r=20 adjust the PC clock by two, three or four minutes to cope with the four minu= te=20 offset I'm running it on.
 
Andy  G4JNT
2009/3/6 Andy Talbot <andy.g4jnt@googlemai= l.com>
I've now started transmitting a timed  beacon signal on=20 503.7kHz that is identical in format to that of GB3SSS operated over=20= the=20 winter months of the last two years  from Poldhu on 1.9 and 3.5M= Hz,=20  and has a similar signal structure to the 5MHz beacons, GB3RAL,= WES=20 and ORK.  These all have an initial CW ident and stepped po= wer=20 levels for aural reception, and a precisely defined period of full-po= wer=20 plain carrier for S/N measurements.  
See   http://www.rsgb-spectrumforum.org.uk/= 5mhz%20beacons.htm =20 for the complete 5MHz  signal structure.  For this MF=20 transmission, as on GB3SSS, the pulsed sounder sequence of the 5MHz beacon= s is=20 replaced with a PSK31 message which lasts from 30s to approx 48 secon= ds=20 after the start
 
Auto Monitoring software writen by G3PLX is available for monitoring=20 these beacons, it measures signal to noise during the carrier period and s= aves=20 to file as well as plotting the last 40 hours worth of measurements.
The software can be downloaded from  http://www.rsgb= .org/spectrumforum/hf/beaconauto.php .  =20 PSK31 data can be copied with Digipan, Fldigi, PSK31SBW or a host of other= =20 packages.
 
TIMING
The 503.7kHz transmission takes place every 15 minutes at 4 minutes p= ast=20 the quarter hour. 
ie each transmission starts at xx:04, xx:19, xx:34 and=20 xx:49    This time slot has been selected so=20= that=20 the transmission do not interfere with my continuous ongoing reception of=20= the=20 5Mhz beacons - the active antenna used for these is overloaded by the 500k= Hz=20 signal and I have already lost data when the WSPR beacon transmission=20 coincided with one of the monitoring windows.
 
NOTE   If using the G3PLX software, this=20 only monitors for the three 5MHz beacons at  00, 01 and 02=20 minutes.
SO IT WILL BE NECESSARY TO FRIG THE SOFTWARE=20  to monitor this transmission at the 04 minute=20 point.   The necessary alteration can be done by firstly=20 setting your PC clock accurately to the correct time, then setting th= e=20 Track Time box to -240 (minus 240 seconds).  This will make the softw= are=20 look for this transmission during the time window it thinks it would=20= be=20 receiving GB3RAL, and log the MF transmission during the first minute= , on=20 the red trace, as if it were GB3RAL 
 
The beacon uses the identical hardware to the WSPR transmissions= =20 of the last few weeks, with the the only change being=20 a reprogramming of the controller PIC.   In fact the very s= ame=20 hardware was previously loaned to the Poldhu club for their beacons, with=20= the=20 only difference being a change to the final Low Pass filter on the output=20= of=20 the broadband PA.
 


No virus found in this incoming message.
Checked by AVG -=20 www.avg.com
Version: 8.0.237 / Virus Database: 270.11.13/1999 - Release=20 Date: 03/13/09 05:59:00
------=_NextPart_000_0059_01C9A41E.D96AA970--