Re: [tracker2] Proto B board setup and tuning
- 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 forKC4RAX-5>SWRQ6U,WA4BWB-3*,KD4PBS-3*,WIDE3:`k&/l"i>/]"6z}D700-MOBILE
> 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
> 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.
> 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:
> > $GPWPL,3721.65,N,07910.19,W,KC4RAX-5*35$PMGNWPL,3721.65,N,07910.19,W,921,F,KC4RAX-5,D700-MOBILE
> > 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
> > 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/
> > (fieldless) In fess two roundels in pale, a billet
> fesswise and an
> > increscent, all sable.
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