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Hello Mal,
I can't help you, but I use the same PA here.
Changed the capacitor banks and the coils and with some tweaking of the
coils, I put them on frequency one by one. I just tuned for maximum power, and
the heatsinks are getting just warm at full power. I started with 20 V
supply voltage during the tuning process and the PA was driven by a signal
generator, so I could simple find resonance frequency and step by
step closing in at 500 kHz. The DECCA PA gives me a nice 800W in
50 ohms at 48V supply voltage.
73, Albert
PA0A
----- Original Message -----
Sent: Wednesday, January 13, 2010 12:38
PM
Subject: LF: DECCA 5501 tx
Does anyone know if the series L and C was tuned
for resonance at the operating freq or meant to be adjusted for optimum
switching characteristics like in class E
mal/g3kev
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