Message-ID: <9C03FBF153AB478A9B0DBC5580CF20D2@AGB>
From: "Graham" <g8fzk@g8fzk.fsnet.co.uk>
To: <rsgb_lf_group@blacksheep.org>
References: <fc7eccec0903060303s443d8fbvd1083a6ff34f0e5f@mail.gmail.com> <0566EF6DE20B4249A3E74859BF9BA2C6@AGB> <fc7eccec0903060511g500bcdfbi66efa15b49f9e2bc@mail.gmail.com>
In-Reply-To: <fc7eccec0903060511g500bcdfbi66efa15b49f9e2bc@mail.gmail.com>
Date: Fri, 6 Mar 2009 14:41:21 -0000
MIME-Version: 1.0
Importance: Normal
Subject: Re: LF: Multi-function beacon
Content-Type: multipart/alternative;
	boundary="----=_NextPart_000_005A_01C99E69.9DF7FEC0"
Sender: owner-rsgb_lf_group@blacksheep.org
Precedence: bulk
Reply-To: rsgb_lf_group@blacksheep.org


------=_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 <g8fzk@g8fzk.fsnet.co.uk>

  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

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META content=3Dtext/html;charset=3Diso-8859-1 http-equiv=3DContent-Type>
<META name=3DGENERATOR content=3D"MSHTML 8.00.6001.18372"></HEAD>
<BODY style=3D"PADDING-LEFT: 10px; PADDING-RIGHT: 10px; PADDING-TOP: 15px" =20=
 id=3DMailContainerBody leftMargin=3D0 topMargin=3D0 CanvasTabStop=3D"true"=20=
  name=3D"Compose message area">
<DIV><FONT size=3D2 face=3DArial>Ok Andy,</FONT></DIV>
<DIV><FONT size=3D2 face=3DArial></FONT>&nbsp;</DIV>
<DIV><FONT size=3D2 face=3DArial>Obvious question, hi, </FONT></DIV>
<DIV><FONT size=3D2 face=3DArial></FONT>&nbsp;</DIV>
<DIV><FONT size=3D2 face=3DArial>How long are you&nbsp; thinking of running=20
the&nbsp; beacon and where do&nbsp; you&nbsp; want the report files to&nbsp;=
 be=20
sent ?</FONT></DIV>
<DIV><FONT size=3D2 face=3DArial></FONT>&nbsp;</DIV>
<DIV><FONT size=3D2 face=3DArial>There may be quite a few records generated=20=
in a=20
short time, </FONT><FONT size=3D2 face=3DArial>I note from the last 'hfc' th=
at there=20
is quite a backlog of data from the&nbsp; 5&nbsp; meg operation but there is=
=20
movement</FONT></DIV>
<DIV><FONT size=3D2 face=3DArial>to analyse the&nbsp; data. should prove int=
eresting=20
... &nbsp;</FONT></DIV>
<DIV><FONT size=3D2 face=3DArial></FONT>&nbsp;</DIV>
<DIV><FONT size=3D2 face=3DArial>How aggressive is the pulsed section of the=
&nbsp;=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&nbsp; found the rise/fall and timing parameters.=20=
dose=20
it need to&nbsp; be a pulse or&nbsp; could a small frequency shift be used i=
f=20
time is being measured ?</FONT></DIV>
<DIV><FONT size=3D2 face=3DArial></FONT>&nbsp;</DIV>
<DIV><FONT size=3D2 face=3DArial>Tnx- G .. </FONT></DIV>
<DIV><FONT size=3D2 face=3DArial></FONT>&nbsp;</DIV>
<DIV><FONT size=3D2 face=3DArial></FONT>&nbsp;</DIV>
<DIV><FONT size=3D2 face=3DArial></FONT>&nbsp;</DIV>
<DIV><FONT size=3D2 face=3DArial></FONT>&nbsp;</DIV>
<DIV><FONT size=3D2 face=3DArial></FONT>&nbsp;</DIV>
<DIV><FONT size=3D2 face=3DArial></FONT>&nbsp;</DIV>
<DIV style=3D"FONT: 10pt Tahoma">
<DIV><BR></DIV>
<DIV style=3D"BACKGROUND: #f5f5f5">
<DIV style=3D"font-color: black"><B>From:</B> <A title=3Dandy.g4jnt@googlema=
il.com   href=3D"mailto:andy.g4jnt@googlemail.com">Andy Talbot</A> </DIV>
<DIV><B>Sent:</B> Friday, March 06, 2009 1:11 PM</DIV>
<DIV><B>To:</B> <A   title=3D"mailto:rsgb_lf_group@blacksheep.org&#10;CTRL +=
 Click to follow link"   href=3D"mailto:rsgb_lf_group@blacksheep.org">rsgb_l=
f_group@blacksheep.org</A>=20
</DIV>
<DIV><B>Subject:</B> Re: LF: Multi-function beacon</DIV></DIV></DIV>
<DIV><BR></DIV>
<DIV>There is no auto reporting feature in that S/W.&nbsp;&nbsp;&nbsp; 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.</DIV>
<DIV><BR clear=3Dall>Andy &nbsp;G4JNT<BR><A   href=3D"http://www.g4jnt.com">=
www.g4jnt.com</A><BR><BR><BR></DIV>
<DIV class=3Dgmail_quote>2009/3/6 Graham <SPAN dir=3Dltr>&lt;<A   href=3D"ma=
ilto:g8fzk@g8fzk.fsnet.co.uk">g8fzk@g8fzk.fsnet.co.uk</A>&gt;</SPAN><BR>
<BLOCKQUOTE   style=3D"BORDER-LEFT: #ccc 1px solid; MARGIN: 0px 0px 0px 0.8e=
x; PADDING-LEFT: 1ex"   class=3Dgmail_quote>
  <DIV style=3D"PADDING-LEFT: 10px; PADDING-RIGHT: 10px; PADDING-TOP: 15px"=20=
    name=3D"Compose message area">
  <DIV><FONT size=3D2 face=3DArial>Andy,</FONT></DIV>
  <DIV><FONT size=3D2 face=3DArial></FONT>&nbsp;</DIV>
  <DIV><FONT size=3D2 face=3DArial>Quick Q .. is the&nbsp; reception softwar=
e=20
  capable of auto reporting to the&nbsp; 5 meg group&nbsp;?</FONT></DIV>
  <DIV><FONT size=3D2 face=3DArial></FONT>&nbsp;</DIV>
  <DIV><FONT size=3D2 face=3DArial>I have an idea it has this&nbsp; facility=
 .or at=20
  least produces a -5 meg-&nbsp;report file . if so can it be turned off=20
  ?</FONT></DIV>
  <DIV><FONT size=3D2 face=3DArial></FONT>&nbsp;</DIV>
  <DIV><FONT size=3D2 face=3DArial></FONT>&nbsp;</DIV>
  <DIV><FONT size=3D2 face=3DArial>G .. </FONT></DIV>
  <DIV style=3D"FONT: 10pt Tahoma">
  <DIV><BR></DIV>
  <DIV style=3D"BACKGROUND: #f5f5f5">
  <DIV><B>From:</B> <A title=3Dandy.g4jnt@googlemail.com     href=3D"mailto:=
andy.g4jnt@googlemail.com" target=3D_blank>Andy Talbot</A> </DIV>
  <DIV><B>Sent:</B> Friday, March 06, 2009 11:03 AM</DIV>
  <DIV><B>To:</B> <A title=3Drsgb_lf_group@blacksheep.org     href=3D"mailto=
:rsgb_lf_group@blacksheep.org"     target=3D_blank>rsgb_lf_group@blacksheep.=
org</A> </DIV>
  <DIV><B>Cc:</B> <A title=3Djfell@tesco.net href=3D"mailto:jfell@tesco.net"=
     target=3D_blank>jfell@tesco.net</A> </DIV>
  <DIV><B>Subject:</B> LF: Multi-function beacon</DIV></DIV></DIV>
  <DIV><BR></DIV>
  <DIV>I've now&nbsp;started transmitting a timed&nbsp; beacon signal on=20
  503.7kHz that is&nbsp;identical in format to that of GB3SSS operated over=20=
the=20
  winter months of the last two years&nbsp;&nbsp;from Poldhu on 1.9 and 3.5M=
Hz,=20
  &nbsp;and has&nbsp;a similar signal structure to the 5MHz beacons, GB3RAL,=
 WES=20
  and ORK.&nbsp; These all have&nbsp;an initial CW ident and&nbsp;stepped po=
wer=20
  levels for aural reception,&nbsp;and a precisely defined period of full-po=
wer=20
  plain carrier for S/N measurements.&nbsp;&nbsp;</DIV>
  <DIV>See&nbsp; &nbsp;<A     href=3D"http://www.rsgb-spectrumforum.org.uk/5=
mhz%20beacons.htm"     target=3D_blank>http://www.rsgb-spectrumforum.org.uk/=
5mhz%20beacons.htm</A>&nbsp;=20
  for the complete 5MHz &nbsp;signal structure.&nbsp;&nbsp;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&nbsp;30s to approx 48 secon=
ds=20
  after the start</DIV>
  <DIV>&nbsp;</DIV>
  <DIV></DIV>
  <DIV>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.</DIV>
  <DIV>The software can be downloaded from&nbsp; <A     href=3D"http://www.r=
sgb.org/spectrumforum/hf/beaconauto.php"     target=3D_blank>http://www.rsgb=
.org/spectrumforum/hf/beaconauto.php</A>&nbsp;.&nbsp;&nbsp;=20
  PSK31 data can be copied with Digipan, Fldigi, PSK31SBW or a host of other=
=20
  packages.</DIV>
  <DIV>&nbsp;</DIV>
  <DIV><STRONG>TIMING </STRONG></DIV>
  <DIV>The 503.7kHz transmission takes place every 15 minutes at 4 minutes p=
ast=20
  the quarter hour.&nbsp; </DIV>
  <DIV>ie&nbsp;each transmission starts at <STRONG>xx:04, xx:19, xx:34 and=20
  xx:49&nbsp;&nbsp;&nbsp;</STRONG>&nbsp;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.</DIV>
  <DIV>&nbsp;</DIV>
  <DIV>NOTE&nbsp;&nbsp; If using the&nbsp;G3PLX software, this=20
  only&nbsp;monitors for the three 5MHz beacons at &nbsp;00, 01 and 02=20
  minutes.</DIV>
  <DIV><STRONG>SO IT WILL BE NECESSARY&nbsp;TO FRIG&nbsp;THE SOFTWARE=20
  </STRONG>&nbsp;to monitor this&nbsp;transmission at the 04 minute=20
  point.&nbsp;&nbsp;&nbsp;The necessary alteration can be done by firstly=20
  setting&nbsp;your PC clock accurately to the correct time, then setting th=
e=20
  Track Time box to -240 (minus 240 seconds).&nbsp; This will make the softw=
are=20
  look for this transmission during the time&nbsp;window it thinks it would=20=
be=20
  receiving GB3RAL, and log the&nbsp;MF transmission during the first minute=
, on=20
  the red trace, as if it were GB3RAL&nbsp;</DIV>
  <DIV>&nbsp;</DIV>
  <DIV>The beacon uses the identical hardware to the&nbsp;WSPR transmissions=
=20
  of&nbsp;the last few weeks, with the the only change being=20
  a&nbsp;reprogramming of the controller PIC.&nbsp;&nbsp; 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.</DIV>
  <DIV>&nbsp;</DIV>
  <DIV></DIV>
  <DIV>Andy &nbsp;G4JNT</DIV>
  <DIV><A href=3D"http://www.g4jnt.com/" target=3D_blank>www.g4jnt.com</A></=
DIV>
  <DIV></DIV>
  <DIV></DIV>
  <P>
  <HR>

  <P></P><BR>No virus found in this incoming message.<BR>Checked by AVG - <A=
     href=3D"http://www.avg.com/" target=3D_blank>www.avg.com</A> <BR>Versio=
n: 8.0.237=20
  / Virus Database: 270.11.8/1985 - Release Date: 03/05/09 07:54:00<BR>
  <P></P>
  <P></P></DIV></BLOCKQUOTE></DIV><BR>
<P>
<HR>

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

------=_NextPart_000_005A_01C99E69.9DF7FEC0--