The Jupiter receiver defaults to Motorola output, but can be switched to
Zodiac. It talks at 9600:8:N:1
Frankly, it is the wrong receiver to use, particularly with an indoor antenna.
I would go with a modern GPS receiver with standard NMEA output and a 1PPS
signal. They are MUCH more sensitive and usually work indoors and can be had
for dirt cheap. Most have an on-board ceramic patch antenna. Ublox receivers
seem to work well indoors.
NAVSPARK makes a tiny little GPS board with 1PPS output. 6 for $36 or one free
for $10 shipping (no antenna supplied, has a U.FL connector). It speaks NMEA
at 115,200:8:N:1 or can be setup for 9600 baud.
The delay between message and 1PPS is receiver dependent. Usually it is small
enough to not be noticeable. Some receivers send the message before the 1PPS,
others after it. You can compensate for the differences/delays in software.
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