"Matt Barrow" wrote:


wrote in message newsDbHf.33957$JT.26162@fed1read06...
ted wrote:


The only issue (or flaw) that has come to my attention is the risk of
radio interference on the GPS civilian frequency. The replacement GPS
satellites are being designed with a second civilian frequency to address
this problem.

How long will that take to populate the entire constellation?

If necessary to facilitate commercial avaition, not nearly as long as you
think.

If you launch three satellites per year then about 24/3 = 8 years.

Ron Lee