BS170 thats a MOSFET 60pf input capacitance adds complications and would require a
bias adjustment for every one. Not a good choice. A 2n7000 is a similar device
and I have 2n6661 that I"ve used in the past at RF. There is no plan to use mosfets
in the driver or predriver stages. Generally the gate to drain capacitance is problematic
I've already listed MPSH10/MMBTH10 as candidates. I am waiting on sot and to92 from supplier.