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Re: [tracker2] T2-135 intermittent serial comm

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  • Scott Miller
    Glad that fixed it for you. There was something definitely weird with the assembly of that batch. I just got a new batch of bare boards in, but I m not using
    Message 1 of 10 , Jul 28, 2008
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      Glad that fixed it for you. There was something definitely weird with
      the assembly of that batch. I just got a new batch of bare boards in,
      but I'm not using that place for assembly again.

      Scott

      Scott Brock wrote:
      >
      >
      > Okay, here are the results!
      >
      > After spending an hour figuring out what coax went to the antenna on the
      > roof, I was able to hook up the radio and hear good sounding strong
      > packets. The problem was still present. I decided to skip comparing to
      > the other TNC/Radio for now because of the time it would take to get
      > that put back together.
      >
      > To get the demodulator section reflowed I had to get out the flux and I
      > used a fine tip and did each solder point individually. I put The T2-135
      > back in the radio and it worked great. I proceeded to finish this same
      > reflow process on the rest of the board, cleaned the board with some
      > alcohol, and reinstalled again. I was able to throw in 20dB of
      > attenuation before I started to have problems decoding packets. At this
      > point the signal was not showing up on the radio's meter and sounded
      > very weak. Seems like it was indeed the solder process.
      >
      > Thanks for the help guys.
      >
      > 73,
      > Scott - kb9szw
      >
      >
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