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2726Re: [GPSL] Re: FWD: Announcing the Micro-Trak 300

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  • Zack Clobes
    Nov 1, 2006
      The old PocketTracker just used a standard VHF PLL.  I've noticed that it's increasingly difficult to purchase PLL's in the lower frequency range, at least without using lots of discretes.

      Most of the PLL's are moving up into the 300-500MHz range or higher.


      Mike Manes wrote:

      Hmmmm ... custom xtals are pretty pricey nowadays. Wonder why Byon
      moved away from the DDS used in the other guy?
      73 de Mike W5VSI

      mconner1@gmail. com wrote:
      > There is some discussion of this issue on the TinyTrak group, however,
      > it appears to involved custom SMT crystals and would be an outright
      > replacement rather than a switchable config. They are thinking about a
      > production run for 144.80 MHz to support Europe APRS. I dunno if we
      > have enough market to make a 144.34 MHz production run worthwhile.
      > I made a post on the list indicating ARHAB uses 144.34 and if the change
      > is simple it could increase sales.
      > 73 de Mark N9XTN
      > ----- Original Message -----
      > From: Hank <n1ltv@yahoo. com>
      > Date: Tuesday, October 31, 2006 9:05 am
      > Subject: [GPSL] Re: FWD: Announcing the Micro-Trak 300
      > To: GPSL@yahoogroups. com
      > > > Ideally it would have an alternate frequency available,
      > >
      > > I think it might be pretty easy to add an alternate
      > > crstal that could be selected by a movable jumper, or
      > > if there is a concern for mechanical integrity during
      > > flight, a solder bridge.
      > >
      > > Would have to see the circuit to be more definitive
      > > about the above notion.
      > >
      > > Hank
      > >
      > >
      > >

      Mike Manes manes@attglobal. net Tel: 303-979-4899
      "Things should be made as simple as possible, but not more so." A. Einstein

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