Good night Uwe,
Perhaps a low pass filter problem, there is perhaps too much harmonic...
I suppose that everything goes fine with a pure resistive load.
What are the values of the components of your low pass filter?
I use 54µH air coils, because I had saturation problems with magnetics
supports, it is bigger but better (from my side).
In QRP it is easy but in QRO troubles are there! I hope that you are going
to find a solution.
Vy 73 Uwe
----- Original Message -----
From: <[email protected]>
To: <[email protected]>
Sent: Saturday, February 17, 2007 7:10 PM
Subject: LF: Sine or not
at the output of my LF TX the phase of V and A looked nice,
both clean sines and in phase until I lengthened the top wires from 180m
the system is in resonance, the phase OK. but the form of the A sine is
pse see atachment.
my question, what is wrong?