On Sun, 6 Mar 2016 12:31:47 -0700, you wrote: >What could this have been used >for, with such a narrow bandwidth? Removing spurs from a 100Kc standard, perhaps? -- Gary Woods AKA K2AHC- PGP key on request, or at home.earthlink.net/~garygarlic Zone 5/4 in upstate New York, 1420' elevation. NY WO G