600m crystal combination

Lately, a lot of color burst crystals made it into my collection. Not sure what to do with those, I had another look at standard frequencies. And this is the outcome:

• 3.579545 - 3.072 = 0.507545

In order to arrive at our allowed range (501kHz-504kHz), the color-burst crystal would have to be pulled down by max. 7.6kHz. Tough pull, but doable.