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The world is full of options Maiko...<BR>
<BR>
On Sun, 2006-09-24 at 15:25 -0500, Maiko Langelaar (ve4klm) wrote:
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<FONT COLOR="#000000">I should know better then to use dial frequencies.</FONT>
<FONT COLOR="#000000">My QRG is currently 10.127 Mhz</FONT>
<FONT COLOR="#000000">> SCS PTC users - 10.127 LSB</FONT>
<FONT COLOR="#000000">Obviously not the correct dial frequency.</FONT>
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Let's put forward these three options taken from the manual:<BR>
TOnes=0[LOW] default:1200/1400 USB/subtract=>10,125.60<BR>
TOnes=1[HIGH] other:2300/2100 LSB&FSK/add=>10,129.10<BR>
TOnes=3[SET] set by user=> you're on your own...
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<FONT COLOR="#000000">> DXP38 users - 10.129.1 LSB</FONT>
<FONT COLOR="#000000">For DXP38 modems using the default 2125 mark tone,</FONT>
<FONT COLOR="#000000">the dial frequency is more like 10.129.13 LSB.</FONT>
<FONT COLOR="#000000">Sorry for the confusion.</FONT>
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The whole topic is confusing.<BR>
You chose to calibrate on MARK, yet some others specify centerline MARK/SPACE frequency.<BR>
In SCS Pactor mode MARK/SPACE frequencies may be reversed, in RTTY no reversal permitted.<BR>
In SCS a TR parameter reverses MARK-SPACE<BR>
In SCS default Mark is higher than SPACE - in KAM-98 MARK must be specified less than SPACE.<BR>
Some other TNC? Then some other set of rules (and the list goes on)...<BR>
<BR>
The one constant seems to be: Get close then tweek a little.<BR>
<BR>
In the past year I have not seen a good "tuning the radio" guide using various TNC models.<BR>
If anyone has, I'd love to see it?
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<FONT COLOR="#000000">Maiko</FONT>
<FONT COLOR="#000000">_______________________________________________</FONT>
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<FONT COLOR="#000000"><A HREF="https://lists.tapr.org/cgi-bin/mailman/listinfo/nos-bbs">https://lists.tapr.org/cgi-bin/mailman/listinfo/nos-bbs</A></FONT>
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73<BR>
de [George (Skip) VerDuin] K8RRA k
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