On Monday, 8 February 2016 15:29:53 UTC+2, Tango Whisky wrote:
The FSG16 is an almost 40 years old design. At the time, the channels/frequencies were stabilized with one dedicated quartz per frequency, and the FSG16 was designed to hold 12 quartzes. Simple as that.

So 12 individual crystals was a cheaper solution than being able to tune into any of the 720 usable channels that the rest of the receiver unit is capable of?