Here's an odd one: I'm looking for a model 241 crystal oscillator for my collection of 540/544. I intend on using it with a 540 for PSK-31. I know I can use 2 x-tals with a 242, but I would like 241 also. Does anyone have one? Doesn't even have to work! I don't need a manual either...Ten Tec has a great copy machine HIHI. Thanks, Larry, N1SHM