<div dir="ltr"><br><br><div class="gmail_quote">---------- Forwarded message ----------<br>From: <b class="gmail_sendername">Antonio Matias</b> <span dir="ltr"><<a href="mailto:ct1ffu@gmail.com">ct1ffu@gmail.com</a>></span><br>
Date: 2013/3/30<br>Subject: [CT-Com. & Tec.] New sequence using PI4 on 4 m<br>To: <a href="mailto:ct-comunicacoes-e-tecnologias@googlegroups.com">ct-comunicacoes-e-tecnologias@googlegroups.com</a><br><br><br><span style="color:rgb(68,68,68);line-height:15.85px;font-family:Georgia;font-size:13px">Today the OZ7IGY beacons using the Next Generation Beacons platform on 70 cm, 2 m, 4 m and 6 m have changed sequence and is now sending a 1 minute sequence sending PI4 + CW ID + carrier.</span><br style="color:rgb(68,68,68);line-height:15.85px;font-family:Georgia;font-size:13px">
<br style="color:rgb(68,68,68);line-height:15.85px;font-family:Georgia;font-size:13px"><span style="color:rgb(68,68,68);line-height:15.85px;font-family:Georgia;font-size:13px">All the nominal frequencies remain the same. To decode PI4 tune your receiver to 800 Hz below the nominal frequency, just like you do when you want to decode a normal CW signal at 800 Hz.</span><br style="color:rgb(68,68,68);line-height:15.85px;font-family:Georgia;font-size:13px">
<br style="color:rgb(68,68,68);line-height:15.85px;font-family:Georgia;font-size:13px"><span style="color:rgb(68,68,68);line-height:15.85px;font-family:Georgia;font-size:13px">PI4 is a digital modulation (MGM) specifically designed with beacons and propagation studies in mind.</span><br style="color:rgb(68,68,68);line-height:15.85px;font-family:Georgia;font-size:13px">
<br style="color:rgb(68,68,68);line-height:15.85px;font-family:Georgia;font-size:13px"><span style="color:rgb(68,68,68);line-height:15.85px;font-family:Georgia;font-size:13px">Download PI-RX to decode PI4: </span><a style="color:rgb(0,104,207);line-height:15.85px;font-family:Verdana;font-size:13px" href="http://www.rudius.net/oz2m/ngnb/pi-rx" target="_blank">http://www.rudius.net/oz2m/ngnb/pi-rx</a><br style="color:rgb(68,68,68);line-height:15.85px;font-family:Georgia;font-size:13px">
<br style="color:rgb(68,68,68);line-height:15.85px;font-family:Georgia;font-size:13px"><span style="color:rgb(68,68,68);line-height:15.85px;font-family:Georgia;font-size:13px">PI4 encoding examples in Arduino C, Atmel C, Delphi Pascal, Microsoft Visual Basic and Microsoft C++: </span><a style="color:rgb(0,104,207);line-height:15.85px;font-family:Verdana;font-size:13px" href="http://www.rudius.net/oz2m/ngnb/software.htm" target="_blank">http://www.rudius.net/oz2m/ngnb/software.htm</a><br style="color:rgb(68,68,68);line-height:15.85px;font-family:Georgia;font-size:13px">
<br style="color:rgb(68,68,68);line-height:15.85px;font-family:Georgia;font-size:13px"><span style="color:rgb(68,68,68);line-height:15.85px;font-family:Georgia;font-size:13px">PI4 online encoding and frequency calculation: </span><a style="color:rgb(0,104,207);line-height:15.85px;font-family:Verdana;font-size:13px" href="http://www.rudius.net/oz2m/ngnb/pi4encoding.php" target="_blank">http://www.rudius.net/oz2m/ngnb/pi4encoding.php</a><br style="color:rgb(68,68,68);line-height:15.85px;font-family:Georgia;font-size:13px">
<br style="color:rgb(68,68,68);line-height:15.85px;font-family:Georgia;font-size:13px"><span style="color:rgb(68,68,68);line-height:15.85px;font-family:Georgia;font-size:13px">PI4 specification: </span><a style="color:rgb(0,104,207);line-height:15.85px;font-family:Verdana;font-size:13px" href="http://www.rudius.net/oz2m/ngnb/pi4.htm" target="_blank">http://www.rudius.net/oz2m/ngnb/pi4.htm</a><span style="color:rgb(68,68,68);line-height:15.85px;font-family:Georgia;font-size:13px"> PI4 is a cousin of JT4, JT9 and WSPR.</span><br style="color:rgb(68,68,68);line-height:15.85px;font-family:Georgia;font-size:13px">
<br style="color:rgb(68,68,68);line-height:15.85px;font-family:Georgia;font-size:13px"><span style="color:rgb(68,68,68);line-height:15.85px;font-family:Georgia;font-size:13px">OZ7IGY status page: </span><a style="color:rgb(0,104,207);line-height:15.85px;font-family:Verdana;font-size:13px" href="http://www.rudius.net/oz7igy" target="_blank">http://www.rudius.net/oz7igy</a><br style="color:rgb(68,68,68);line-height:15.85px;font-family:Georgia;font-size:13px">
<br style="color:rgb(68,68,68);line-height:15.85px;font-family:Georgia;font-size:13px"><span style="color:rgb(68,68,68);line-height:15.85px;font-family:Georgia;font-size:13px">73</span><br style="color:rgb(68,68,68);line-height:15.85px;font-family:Georgia;font-size:13px">
<span style="color:rgb(68,68,68);line-height:15.85px;font-family:Georgia;font-size:13px">Bo, OZ2M</span><br style="color:rgb(68,68,68);line-height:15.85px;font-family:Georgia;font-size:13px">
<div><br></div>-- <br>António Matias<div><br></div><div>CT1FFU - CR5A </div><div><br></div><div><a href="http://www.dxpatrol.com" target="_blank">www.dxpatrol.com</a> </div><div><br></div><div>QRV: HF, 6m, 4m,2m,70cm,23cm</div>
<div>SSB, CW, MGM</div><div>DX, EME, Contest,Sat.</div><div><br></div><div>POBOX-38</div><div>2504-909</div><div>Caldas da Rainha</div><div>Portugal</div><span class="HOEnZb"><font color="#888888">
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