I always use silver mica capacitors in a pi network.? They cost
more but I have never had a problem when using them.
Lee, w0vt
On 11/1/2017 11:22 AM, DL3HRT- Karsten
wrote:
It was just trial
and error. I realized that I had to spread windings over the whole
core. So I decided to remove one turn. I did it with L2 and L3 and
have good results now. I stopped at this point and did not change
anything else.
What I realized in the thermal images is that the 390pF capacitors
heat up.
Regards
Karsten
_.
