Tom, Understand, I could be off a bit, too. Haven't trimmed up the oscillator in the R75 in a long time...know what the error is down at 137, but it may be greater up closer to infinity. <g> JA n8tl wrote: > John: > > Sorry....keyboard & memory error(mine)....He's on 505.251 khz > here....I'm off by a couple Hi.