The rotating tower systems webpage and pricing is over a decade old, are they still being manufactured? 4O3A also makes a rotating tower system. John KK9A Tom Hellem K0SN wrote: TT'ers: Does anybody know of sources for the base and guy rings to be used on Rohn 45/55 rotating tower. I found RTS Systems and K0XG on line. Are there others? Tom K0SN