Return-Path: Received: from rly-mf04.mx.aol.com (rly-mf04.mail.aol.com [172.20.29.174]) by air-mf06.mail.aol.com (v123.3) with ESMTP id MAILINMF062-95749b1362e1e9; Fri, 06 Mar 2009 09:42:04 -0500 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by rly-mf04.mx.aol.com (v123.3) with ESMTP id MAILRELAYINMF045-95749b1362e1e9; Fri, 06 Mar 2009 09:41:52 -0500 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1LfbEy-0004fF-Vt for rs_out_1@blacksheep.org; Fri, 06 Mar 2009 14:41:32 +0000 Received: from [83.244.159.144] (helo=relay3.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1LfbEy-0004f6-5C for rsgb_lf_group@blacksheep.org; Fri, 06 Mar 2009 14:41:32 +0000 Received: from smtp5.freeserve.com ([193.252.22.151] helo=smtp6.freeserve.com) by relay3.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1LfbEw-0000PM-8o for rsgb_lf_group@blacksheep.org; Fri, 06 Mar 2009 14:41:32 +0000 Received: from me-wanadoo.net (localhost [127.0.0.1]) by mwinf3512.me.freeserve.com (SMTP Server) with ESMTP id C2CDB7000084 for ; Fri, 6 Mar 2009 15:41:22 +0100 (CET) Received: from AGB (unknown [91.109.23.203]) by mwinf3512.me.freeserve.com (SMTP Server) with SMTP id 3CC027000083 for ; Fri, 6 Mar 2009 15:41:22 +0100 (CET) X-ME-UUID: 20090306144122248.3CC027000083@mwinf3512.me.freeserve.com Message-ID: <9C03FBF153AB478A9B0DBC5580CF20D2@AGB> From: "Graham" To: References: <0566EF6DE20B4249A3E74859BF9BA2C6@AGB> In-Reply-To: Date: Fri, 6 Mar 2009 14:41:21 -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-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,HTML_MESSAGE=0.001 Subject: Re: LF: Multi-function beacon Content-Type: multipart/alternative; boundary="----=_NextPart_000_005A_01C99E69.9DF7FEC0" 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_005A_01C99E69.9DF7FEC0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Ok Andy, Obvious question, hi,=20 How long are you thinking of running the beacon and where do you want th= e report files to be sent ? There may be quite a few records generated in a short time, I note from the=20= last 'hfc' that there is quite a backlog of data from the 5 meg operation=20= but there is movement to analyse the data. should prove interesting .. =20 How aggressive is the pulsed section of the tx cycle,?, I know there is som= e interest in using that facility for study's on 500, but as yet I have not=20= found the rise/fall and timing parameters. dose it need to be a pulse or =20= could a small frequency shift be used if time is being measured ? Tnx- G ..=20 From: Andy Talbot=20 Sent: Friday, March 06, 2009 1:11 PM To: rsgb_lf_group@blacksheep.org=20 Subject: Re: LF: Multi-function beacon There is no auto reporting feature in that S/W. It generates a log file c= ontaining S/N of each beacon / time slot, which the user then has to persona= lly send to the 5MHz working group. Andy G4JNT www.g4jnt.com 2009/3/6 Graham Andy, Quick Q .. is the reception software capable of auto reporting to the 5=20= meg group ? I have an idea it has this facility .or at least produces a -5 meg- repor= t file . if so can it be turned off ? G ..=20 From: Andy Talbot=20 Sent: Friday, March 06, 2009 11:03 AM To: rsgb_lf_group@blacksheep.org=20 Cc: jfell@tesco.net=20 Subject: LF: Multi-function beacon 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. Andy G4JNT www.g4jnt.com ----------------------------------------------------------------------------= -- No virus found in this incoming message. Checked by AVG - www.avg.com=20 Version: 8.0.237 / Virus Database: 270.11.8/1985 - Release Date: 03/05/09=20= 07:54:00 ----------------------------------------------------------------------------= ---- No virus found in this incoming message. Checked by AVG - www.avg.com=20 Version: 8.0.237 / Virus Database: 270.11.8/1985 - Release Date: 03/05/09 07= :54:00 ------=_NextPart_000_005A_01C99E69.9DF7FEC0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Ok Andy,
 
Obvious question, hi,
 
How long are you  thinking of running=20 the  beacon and where do  you  want the report files to = be=20 sent ?
 
There may be quite a few records generated=20= in a=20 short time, I note from the last 'hfc' th= at there=20 is quite a backlog of data from the  5  meg operation but there is= =20 movement
to analyse the  data. should prove int= eresting=20 ...  
 
How aggressive is the pulsed section of the=  =20 tx cycle,?, I know there is some interest in using that facility for study's= on=20 500, but as yet I have not  found the rise/fall and timing parameters.=20= dose=20 it need to  be a pulse or  could a small frequency shift be used i= f=20 time is being measured ?
 
Tnx- G ..
 
 
 
 
 
 

Sent: Friday, March 06, 2009 1:11 PM
Subject: Re: LF: Multi-function beacon

There is no auto reporting feature in that S/W.    It=20 generates a log file containing S/N of each beacon / time slot, which the us= er=20 then has to personally send to the 5MHz working group.

Andy  G4JNT
= www.g4jnt.com


2009/3/6 Graham <g8fzk@g8fzk.fsnet.co.uk>
Andy,
 
Quick Q .. is the  reception softwar= e=20 capable of auto reporting to the  5 meg group ?
 
I have an idea it has this  facility= .or at=20 least produces a -5 meg- report file . if so can it be turned off=20 ?
 
 
G ..

Sent: Friday, March 06, 2009 11:03 AM
Subject: LF: Multi-function beacon

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.
 
Andy  G4JNT
www.g4jnt.com


No virus found in this incoming message.
Checked by AVG - www.avg.com
Versio= n: 8.0.237=20 / Virus Database: 270.11.8/1985 - Release Date: 03/05/09 07:54:00



No virus found in this incoming message.
Checked by AVG -=20 www.avg.com
Version: 8.0.237 / Virus Database: 270.11.8/1985 - Release D= ate:=20 03/05/09 07:54:00
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