Hi Zack!
I have an “out of the blue” question that hit me the other day since I am a freshmen in college and will likely move away from home sometime in the next 5+ years... I know the VUCC rules say you can count any grid towards VUCC that was worked from two locations no more than 120km apart.
Actually, the limit for the maximum distance between the locations you use for satellite VUCC is 200km, or approximately 124.2 miles. See section 6 in the current VUCC rules at:
http://www.arrl.org/files/file/Awards/VUCC%20Rules%202011_Rev%2020110215.pdf
Lets say I have 500 grids worked by the time I move out (which is a LOT of time, work and $$), and I decide to move to SC. Are those 500 grids that I worked/confirmed no longer valid towards VUCC (if I wanted to get an endorsement)?
If your location in South Carolina is more than 200km from all locations you are currently operating from and using toward your current satellite VUCC, then the South Carolina location could not be used toward your existing satellite VUCC. You would have to start working on a new satellite VUCC based on your new location in South Carolina. You would still maintain your existing satellite VUCC award, and could add to it if you operate from other locations that would fall within the 200km limit for that satellite VUCC.
This probably isn't the answer you were looking for, Zack. Then again, you would have a new challenge to work stations from a new location further east than you are now.
73!
Patrick WD9EWK/VA7EWK http://www.wd9ewk.net/