Quickly, here are some simple maps showing the location of Bldg 4622 at MSFC. Driving directions : Follow Rideout road all the way south to the end, turn right on Fowler Rd; Centaur is a smaller road that splits off to the left – you can see our tower and antennas. (From http://aprs.fi/wa4nzd )
We also typically monitor the 147.100 repeater while we are there.
If this is the building you see, then you have found the right place….