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[wxsig] T238+ Modem Problems - problem solved

Will Beals will at beals5.com
Tue Dec 12 03:02:46 UTC 2006


 Rich:

Oops, messages crossed. Did not think that was a fatal error!  Will look
into that.

will

-----Original Message-----
From: wn0x at earthlink.net [mailto:wn0x at earthlink.net] 
Sent: Monday, December 11, 2006 7:57 PM
To: will at beals5.com; TAPR Weather Station SIG Mailing List; 'TAPR Weather
Station SIG Mailing List'
Subject: RE: [wxsig] T238+ Modem Problems - problem solved

Will - problem solved

I DID NOT have my call entered yet.  Never occurred to me to do this since I
was testing basic functionality.  Frankly, I never got that far and it just
ocurred to me as I read your post.

Would you consider a mod that states "NO CALL!" on startup and prevents
sending the posit until a valid call sign is entered?

I will begin further testing now. Hopefully AP006 will be back on the air
after a long hiatus! 

Rich - wn0x



-----Original Message-----
>From: Will Beals <will at beals5.com>
>Sent: Dec 11, 2006 5:35 PM
>To: 'TAPR Weather Station SIG Mailing List' <wxsig at lists.tapr.org>
>Subject: RE: [wxsig] T238+ Modem Problems
>
>Rich:
>
>By intro screen do you mean the copyright screen or the "one moment please"
>screen?
>
>I am guessing the latter as it sounds like the T238 thinks the channel 
>is busy and waiting for it to clear before sending its "Hi, I'm here" 
>packet that broadcasts the SW version number.
>
>Is the busy LED lit? (suspect not or you'd have noticed) Any chance of 
>a wiring error there.  It is pin 6 of the connector, but best place is 
>pin 11 of the micro.  It should be low.
>
>Final wiring to check is the path from pin 14 of the MX-614 through pin 
>11 of the header to pin 22 of the micro.  This is the handshaking line 
>for bit transfers between the MX-614 and the micro.  If busted, it 
>would halt communications which is also symptomatic of your hangup.
>
>Good luck, let us know what happens.
>
>will
>
>-----Original Message-----
>From: wxsig-bounces at lists.tapr.org 
>[mailto:wxsig-bounces at lists.tapr.org] On Behalf Of wn0x at earthlink.net
>Sent: Monday, December 11, 2006 2:36 PM
>To: wxsig at lists.tapr.org
>Subject: [wxsig] T238+ Modem Problems
>
>I am looking for suggestions to help troubleshoot my T238+modem.  
>
>The T283+ works fine without the modem installed.  When I have the 
>modem installed and selected for output the T238 gets stuck on the intro
screen.
>Changing the output to PEET, TNC etc eliminates the problem.
>
>I have checked all of the voltages on the modem and everything is correct.
>LEDs work fine.  Five volts present on all the ICs where it should be.
>Static precautions were taken during the build.
>
>Any suggestions?
>
>Rich - WN0X  - AP006
>
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>
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