David ) writes:

Pick your 1MHz band, and tune away. You'll need to tweek a bit if
you want to be very far from 15 MHz.


If you choose the 31 and 25 metre bands you can receive both with one
crystal in the oscillator. Many years ago I built a simple converter
using a 10.7 MHz crystal and a tunable front end so I could tune 31 m band
(osc on the high side) and the 25 m band (osc on the low side). Don't
remember now where I got the circuit but it worked very well with a
standard (in those days!) car radio antenna.

.... Martin VE3OAT