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Re: [tracker2] Proto B board setup and tuning

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  • P. Suryono Adisoemarta
    Mine is at 11 o clock using that technique. 73 de Paulus ... KC4RAX-5 SWRQ6U,WA4BWB-3*,KD4PBS-3*,WIDE3:`k&/l i /] 6z}D700-MOBILE ...
    Message 1 of 3 , Sep 25, 2007
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      Mine is at 11 o'clock using that technique.

      73 de Paulus

      --- Scott Miller <scott@...> wrote:

      > I don't remember now where the sweet spot was for
      > Proto B tuning. Best
      > way to test is to play back a calibration tone pair,
      > either from another
      > TNC or from the APRS test CD, and adjust the RX pot
      > until you see 50%
      > duty cycle at pin 7 of the NJM2211 using a meter or
      > oscilloscope.
      >
      > For dual ports, you'll need to build a splitter.
      > I'll make sure I get
      > the details for that added to the manual soon. I'm
      > on the road today -
      > literally, on US 101 watching the channel islands
      > coming out of the
      > morning fog. Not driving, though!
      >
      > I've run both a Deluo GPS and Garmin GPSmap 60CS,
      > and I think it was
      > doing OK switching between the two last I checked.
      > I was doing pretty
      > much the same thing - the Deluo is permanently
      > installed and gets used
      > for regular tracking, but when the 60CS is plugged
      > in I have a map display.
      >
      > Scott
      >
      > Tanner Lovelace wrote:
      > >
      > >
      > > Greetings,
      > >
      > > After sitting on it for way too long I finally got
      > around to assembling
      > > the proto b board I bought a long time ago (hangs
      > head). But, that's
      > > the good news. :-) It's together now and I'm
      > trying to figure out everything
      > > about it. It seems to work fairly well
      > transmitting. I've also played
      > > around a bit with command mode. What I'm trying to
      > figure out how to
      > > do now, though, is to get it to correctly receive
      > packets and display
      > > them on my Garmin GPSMap 60C.
      > >
      > > I first wanted to see if it will receive packets,
      > so after searching
      > > the group archives and looking at the
      > documentation I found the "monitor"
      > > command. So, with the tracker 2 hooked up to the
      > radio and my laptop
      > > I set monitor mode on and tried to transmit from
      > my home Xastir station
      > > to see if it would receive it. I do see the radio
      > indicating that it
      > > is receiving
      > > stuff and I see the led on the tracker 2 flash
      > green, but I don't see
      > > anything
      > > at all in the terminal.
      > >
      > > Of course, then later, while I was trying to
      > figure out what might be
      > > wrong, this popped up on the terminal:
      > >
      > >
      >
      KC4RAX-5>SWRQ6U,WA4BWB-3*,KD4PBS-3*,WIDE3:`k&/l"i>/]"6z}D700-MOBILE
      > > $GPWPL,3721.65,N,07910.19,W,KC4RAX-5*35
      > >
      >
      $PMGNWPL,3721.65,N,07910.19,W,921,F,KC4RAX-5,D700-MOBILE
      > ,f*52
      > >
      > > So, it looks like it is receiving *some*
      > transmissions. I have not adjusted
      > > my RX pot at all yet. How do I go about doing
      > that? (I do have an
      > > oscilloscope if I need it, but it was given to me
      > and I'm not very
      > > knowledgeable
      > > in how to use it yet.) Any suggestions would be
      > appreciated.
      > >
      > > Also, another question while I'm at it. Am I
      > correct in thinking that if I
      > > want to use a second serial in on my proto b board
      > that I'll need to do
      > > more assembly of something? What do I need to do
      > there? And assuming
      > > I get a second serial port working, is the
      > following scenario feasible?
      > >
      > > What I'd like to be able to do is this. I have an
      > Axiom Sandpiper GPS board
      > > that I'd like to permanently connect to the
      > tracker 2 in my car.
      > > However, since
      > > it doesn't have a display, I'd like to be able,
      > when I have it with me,
      > > to get
      > > the tracker 2 to display APRS entities on the
      > GPSMap 60C. Is it possible to
      > > connect the axiom gpsr to the second serial port
      > and have the tracker 2
      > > receive from that and then connect the gpsmap 60C
      > to the first serial port
      > > and have it receive waypoints from the tracker 2.
      > What problems will I run
      > > into with this setup?
      > >
      > > Thanks in advance,
      > > Tanner Lovelace
      > > KB4TYE
      > > --
      > > Tanner Lovelace
      > > kb4tye at arrl dot net
      > > http://wtl.wayfarer.org/
      > <http://wtl.wayfarer.org/>
      > > (fieldless) In fess two roundels in pale, a billet
      > fesswise and an
      > > increscent, all sable.
      > >
      > >
      >
      >
      >
      >
      > Yahoo! Groups Links
      >
      >
      >
      >
      >




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