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Re: IRF510 amplifier failures
I was looking at the data sheet from Mitsubishi for their RD15HVF1 and in the electrical characteristic table on page two it says:
Parameter Conditions Limits
Load VSWR tolerance Load VSWR=20, ... no destroy
If I am reading this correctly it looks like at over voltage and high power out it is expected to survive a VSWR of 20.
with friend google I also found https://groups.io/g/QRPLabs/message/13357
Wouldn't it be better to change to a RD15HVF1 for high VSWR rather than add circuits, even if the RD15HVF1 did not yield substantially better uBitx power performance at higher frequencies?