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<div class="moz-cite-prefix">Phil,<br>
<br>
Things I would check .....<br>
1. Is the comport speed set correctly to match the settings in the
application. e.g. 9600<br>
2. Is the radio data rate set correctly to 1200bps - DIP switches
6, 7, 8.<br>
3. Is the HF/VHF switch in the out position for VHF<br>
<br>
Going a little deeper, I'd check the audio into the TNC from the
radio to see how close the two tones are to being the same level.
The Exar decoder chip in the MFJ1270B is particularly intolerant
of the high tone (2200Hz) being lower in level than the low tone
(1200Hz) and will refuse to decode if the levels are too
different. The TNCs need about 200mV p2p for reliable decoding.<br>
<br>
Have you used a terminal program to try to talk to the TNC. You
should, at very least, see the TNC message when the TNC is powered
up. This can confirm comport speed, etc. I don't know what the
latest terminal program is for Windows (I use Linux) but hunt
around. If you can talk to the TNC with the terminal program you
are well placed to conduct various tests as suggested by Gordon
vk4vp.<br>
<br>
I have 8 MFJ1270B TNCs (all bought second hand) that have seen
service at HF, VHF and UHF and I must say I've never had a reason
to doubt the tone frequencies on any of them, but ........<br>
<br>
Ray vk2tv<br>
<br>
<br>
On 30/12/2012 3:09 PM, Phil Kern wrote:<br>
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<p class="MsoNormal"><span lang="EN-AU">Hi Guys,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU">Recently dusted off an
old MJF-1270b which I used to use with ‘packet’ many years
ago.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU">Now trying to configure
this with UI-View32. I’m unsure about the config within the
Comms Setup Area.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU">It appears to be
connected on the default setting. Just can’t seem to decode
anything on the terminal screen.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU">Have followed the Config
Guides on aprs.net.au Aprs via Internet seems to decode
correctly.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU">Any help or pointing me
in the right direction, would be greatly appreciated.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU">Cheers<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU">Phil<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU">VK5-ZEY<o:p></o:p></span></p>
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