In article , Uwe
writes:

I will just have to fiddle a bit more
with the pi network (since at the B+ voltages suggested here my plate
current would be way high) and I will have to live with the chirp.

Are you getting a "dip" in plate current? If not, the coil is probably too
large or too small. Unless you get a real dip, the output network isn;t right.

I have used a very similar transmitter with 350 volts on the plate, and the dip
is clean and pronounced.

Nobody
has complained yet anyways and maybe the chirp is worse in my receiver than
on the air, as someone here suggested. By the way I use a Icom R75 for a
receiver and switch the antenna off during transmit-still plenty of a signal
seems to get into the receiver anyways.

It is quite possible that the receiver is being overloaded by the large signal
and creating a chirp.

73 de Jim, N2EY