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Date: Sat, 11 Apr 2009 08:25:10 +0100
Message-ID: <fc7eccec0904110025m5679dccdh76ca310068073317@mail.gmail.com>
From: Andy Talbot <andy.g4jnt@googlemail.com>
To: rsgb_lf_group@blacksheep.org
DomainKey-Status: good (testing) 
Subject: LF: Multipurpose beacon
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Thanks to John G3WKL and to Rod Wilkinson of OFCOM, I now have  Official
Sanction to run the 'Multi Function' beacon  (Well, can you think of a
better name for it !) beacon on 503.7kHz  in continuous unattended
operation.   So now I don't have to switch off on going to work etc -
something that was too easy to forget to do!

To reiterate :

Same signalling protocol as the 5MHz beacons GB3RAL / WES and ORK, but with
the sounder sequence replaced by PSK31.   The transmissions are every 15
minutes offset by four minutes, so starting at 04, 19, 34 and 49 minutes
past the hour.   Format consists of CW ident for the  00 to 07 seconds
interval, then two sets of power steps with the power reduced by 6dB each
second for the 7 to 25 seconds period,  A 100ms break before each power step
makes aural listening to determine the change point and count the audible
ones a little easier.  Then full carrier for 25 - 30 seconds for the
automatic logging software.   PSK31 takes the 30 to (48)s interval  then
plain carrier to complete the minute timeslot.

 Automatic logging software can be obtained from
http://www.rsgb-spectrumforum.org.uk/5mhz%20beacon%20monitoring.htm
Set the timing interval by -240 seconds and this beacon will be logged with
the red trace, as if it were GB3RAL.  the 5 and 6 minute slots, green and
blue traces respectively, are occasionally used by other stations.

 G4WGT has a grabber monitoring this transmission at
http://myweb.tiscali.co.uk/wgtaylor/grabber3.html

  Andy  G4JNT
www.g4jnt.com

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<div>Thanks to John G3WKL and to Rod Wilkinson of OFCOM, I now have =A0Offic=
ial Sanction to run the &#39;Multi Function&#39; beacon =A0(Well, can you th=
ink of a better name for it=A0!) beacon on 503.7kHz =A0in continuous unatten=
ded operation. =A0 So now I don&#39;t have to switch off on going to work et=
c - something that was too=A0easy to forget to do!</div>

<div></div>
<div>=A0</div>
<div>To reiterate :=A0=A0</div>
<div>=A0</div>
<div>Same signalling protocol as the 5MHz beacons GB3RAL / WES and ORK, but=20=
with the sounder sequence replaced by PSK31. =A0 The transmissions are every=
 15 minutes offset by four minutes, so starting at 04, 19, 34 and 49 minutes=
 past the hour. =A0 Format consists of CW ident for the =A000 to 07 seconds=20=
interval, then two sets of power steps with the power reduced by 6dB each se=
cond for the 7 to 25 seconds period, =A0A 100ms break before each power step=
 makes aural listening to determine the change point and count the audible o=
nes a little easier. =A0Then full carrier for 25 - 30 seconds for the automa=
tic logging software. =A0 PSK31 takes the 30 to (48)s interval =A0then plain=
 carrier to complete the minute timeslot.</div>

<div>=A0</div>
<div></div>
<div>Automatic logging software can be obtained from=A0 <a href=3D"http://ww=
w.rsgb-spectrumforum.org.uk/5mhz%20beacon%20monitoring.htm">http://www.rsgb-=
spectrumforum.org.uk/5mhz%20beacon%20monitoring.htm</a></div>
<div>Set the timing interval by -240 seconds and this beacon will be logged=20=
with the red trace, as if it were GB3RAL. =A0the 5 and 6 minute slots, green=
 and blue traces respectively, are occasionally used by other stations.=A0</=
div>

<div>=A0 </div>
<div></div>
<div>G4WGT has a grabber monitoring this transmission at=A0=A0<a href=3D"htt=
p://myweb.tiscali.co.uk/wgtaylor/grabber3.html">http://myweb.tiscali.co.uk/w=
gtaylor/grabber3.html</a></div>
<div>=A0</div>
<div></div>
<div></div>
<div></div>
<div>Andy =A0G4JNT</div>
<div><a href=3D"http://www.g4jnt.com">www.g4jnt.com</a></div>
<div></div>
<div></div>

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