Orbistar (www.orbistar.com, or, if not working, htd.com) sells the trimble mini
mag mount antenna for $45(us).  Their orbistar $35 does not work.  In fact, this
particular GPS has trouble with nearly any and all gps antennas not made by
trimble - reason being that they have overcurrent/undrecurrent circuitry which
is triggered by the high initial current of most antennas.

TSIP is trimbles internal binary protocol.  I assume it gives one scads of
information.

NMEA is the standard for positioning, and is accepted by most mapping programs
for the PC and other computers.

TAIP is a text based positioning protocol meant for radio transmissions.

It depends on your application as to what you should use.

-Adam

ryan pogge wrote:
>
> anyone find a good cheep antena to use with it yet?
> also, I have found all the upgrade software for it, what
> is the advantage or disadvantage of each protol?
> thanks
> _Ryan
>
> > Hook it up directly.
> >
> > -Adam
> >
> > "John A. Craft" wrote:
> > >
> > > I got one of the aforementioned BGMicro Trimble GPS receivers.  The
> > > documentation indicates the serial ports being "TTL Level", Using one of
> > > the MAX chips it talks to the computer just fine.
> > >
> > > If I want to talk to the USART port of a 16C63, what's needed?  Can I
> hook
> > > directly?  Seems strange to hook a MAX to the pic and a MAX to the
> GPS.....
> > >
> > > John C.
> >