PRC-6 Crystal choices
offset is 4.3MHz

Channel	xtal	bandplan
50.4	46.1	50.3 - 50.6 all modes
50.6	46.3
52.02	47.72*	52.02, 52.04 FM simplex
		52.525 FM simplex
		52.54 FM simplex
53.0	48.7	53.0 remote base FM simplex
		53.02 simplex
53.9	49.6*	53.52, 53.9 simplex

* non-standard