2 meter GPS antenna?
 

I've got a 2 meter antenna for my mobile unit, and I'm wondering if it
could double as a GPS antenna. I've got a friend, who 5 years ago
showed me how he had his laptop running MS Streets & Trips hooked to a
GPS receiver. I'm not sure if he had a standalone receiver meant for
laptop use, or somehow used his ham antenna and another receiver. Any
ideas?

Thanks,
Andrew Weber
KG4OTT