144 Mhz DSB Transceiver Idea

This is just an idea for a simple 2m DSB transceiver, I'm still thinking
about this one.
Using the circuit of the 6m QRP DSB Handy Transceiver(Micro6DSB)
from JR8DAG
Using a 72Mhz xtal in place of the 50Mhz and changing the single
balanced mixer/modulator to a sub-harmonic mixer, the circuit
should work on 2m without any other mods except for the tuned
circuits.