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<meta content="text/html; charset=ISO-8859-1" http-equiv="content-type"><title>Contestia</title><meta content="w1hkj" name="author"></head><body style="color: rgb(0, 0, 0); background-color: rgb(255, 255, 204);" alink="#000099" link="#000099" vlink="#990099"><info source="" http:="" www.oliviamode.com="" contestia.htm="">
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</info><h1 style="text-align: center;">Contestia</h1><div style="text-align: center;"><div style="text-align: left;"><div style="text-align: center;"><br>
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<p>fldigi can operate on the following Contestia modes without special setup by the operator:</p>
<table style="background-color: rgb(238, 238, 255); text-align: left; margin-left: auto; margin-right: auto;" border="1"><tbody><tr bgcolor="#eeffff"><td><b>Mode</b></td>
<td><b>Symbol Rate</b></td>
<td><b>Typing Speed</b></td>
<td><b>Bandwidth</b></td>
</tr>
<tr>
<td>Contestia 4-250</td>
<td>62.5 baud</td>
<td>~ 40 wpm </td>
<td>250 Hz</td>
</tr><tr><td>Contestia 8-250</td><td>31.25 baud</td><td>~ 30 wpm </td><td>250 Hz</td></tr><tr>
<td>Contestia 4-500</td>
<td>125 baud</td>
<td>~ 78 wpm </td>
<td>500 Hz</td>
</tr><tr>
<td>Contestia 8-500</td>
<td>62.5 baud</td>
<td>~ 60 wpm</td>
<td>500 Hz</td>
</tr><tr>
<td>Contestia 16-500</td>
<td>31.25 baud</td>
<td>~ 30 wpm</td>
<td>500 Hz</td>
</tr><tr>
<td>Contestia 8-1000</td>
<td>125 baud</td>
<td>~ 117 wpm</td>
<td>1000 Hz</td>
</tr><tr>
<td>Contestia 16-1000</td>
<td>62.5 baud</td>
<td>~ 78 wpm</td>
<td>1000 Hz</td>
</tr><tr>
<td>Contestia 32-1000</td>
<td>31.25 baud</td>
<td>~ 48 wpm</td>
<td>1000 Hz</td>
</tr></tbody></table>
<p>Unusual combinations of symbol rate and bandwidth can be selected using the <a href="configContestia.html">Contestia configuration tab</a>. <br>
<br>
Contestia is a digital mode directly derived from Olivia that is not
quite as robust - but more of a compromise between speed and
performance. It was developed by Nick Fedoseev, UT2UZ, in 2005. It
sounds almost identical to Olivia, can be configured in as many ways,
but has essentially twice the speed.
Contestia has 40 formats just like Olivia - some of which are
considered standard and they all have different characteristics. The
formats vary in bandwidth (125,250,500,1000, and 2000hz) and number of
tones used (2,4,8,16,32,64,128, or 256). The standard Contestia formats
(bandwidth/tones) are 125/4, 250/8, 500/16, 1000/32, and 2000/64.
The most commonly used formats right now seem to be 250/8, 500/16, and
1000/32.<br>
<br>
Contestia performs very well under weak signal conditions. It handles
QRM, QRN, and QSB very well also. It decodes below the noise level but
Olivia still outperforms it in this area by about 1.5 - 3db depending
on configuration.
It is twice as fast as Olivia per configuration. It is an excellent
weak signal, ragchew, QRP, and DX digital mode. When ragchewing under
fair or better conditions it can be more preferable to many hams than
Olivia because of the faster speed. For contests it might also be a
good mode IF the even faster configurations such as 1000/8 or 500/4 are
used.
Contestia get it's increased speed by using a smaller symbol block size
(32) than Olivia (64) and by a using 6bit decimal character set rather
than 7bit ASCII set that Olivia does. Therefore, it has a reduced
character set and does not print out in both upper and lower case (like
RTTY). Some traffic nets might not want to use this mode because it
does not support upper and lower case characters and extended
characters found in many documents and messages. For normal digital
chats and ham communications that does not pose any problem.
</p>
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