PTP 650 Syncronization

I have not sincronized my PTP650s because I would be forced to 1:1 ratio on all of them, We usually use 2:1, more donload than upload.  So it would be really nice to be abble to sync at 2:1 all PTP650 on same site.

Make a new 650 with GPS built in so it would be used as a master for a link.