That RS loop was discontinued years ago. I bought all I could when I found out that was happening. The Select A Tenna is sold also. C Crane may have the TERK. Powell On Jul 16, 2009, at 11:02 PM, Ronald J. Dot'o Sr. wrote: > Rat Shack used to sell a tunable one, cat.# 15-1853 that works fairly > well. I think CCrane.com carries some too. > > Ron D