On Mon, 07 Mar 2005 17:47:56 +0100, andreas magun
wrote:

Thanks for replying.

The problem, was that I had not enough LO-power from the 74F74 outputs.
I have buffered them with a 50 Ohm TTL Driver 74AS804 that could deliver
plenty of current into the LO-inputs. I have limited it to approx 10 mA
by a series resistor of 300 Ohm. At a voltage drop of approximately .550
mVpp across the LO-inputs (approx. 5 mW) the exciter works now as expected.

That is good to hear. I've had excellent results with T2 using
squarewave drive.

Allison