----- Original Message ----- From: "Greg Deputy" > Nah, there are units available in the hundred hertz range, but pricey. Yeah, I've seen 'em... >$5000!! BTW, I don't need 100's of Hz; I was thinking more 2-5Hz. Just enough to get rid of navigation lag. > I'm working with a guy who is building GPS telemetry units for use in > model rockets, r/c planes, and other applications (www.gpsflight.com). > He has several units he uses, and told me about some of the other > suppliers he spoke to. I guess 1hz is pretty much the standard unless > your app is military. One contact he had was with the people who make > units used in GPS guided Mortar rounds. Very tough gps units with high > update rate and must survive high accelerations. Anyways, they're out > there, but they're expensive and you have to jump through hoops to get > them. Yeah, Trimble has a bunch of Mil Spec OEM GPS units on their site. Only available to the U.S. military, and very likely comparable to the infamous $1000 hammer in price. - Robert -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body