[1000mp] MKV power???

[Pete Smith]

At 03:06 PM 4/1/02 -0500, you wrote:
>Hi all
>    The mark 5 can be runned at 300 watts with no problems. The Phillips MOS
>BLF 147 are rated at 150 watts a piece with a very low IMD distortion at
>that power level, and that is conservative....The power supply might be
>stressed a little more, But SSB is a very low duty cycle mode. and Yaesu
>rates the power supply at 450 watts

And why would you want to do this?  The increase in signal is negligible 
(1.8 dB?) compared to the risks you run.  According to Yaesu, the FP-29 is 
capable of 490 watts output, but this is to power everything in the radio, 
not just the final stage, and it's very unlikely that the overall 
efficiency of the radio (not just the final stage) is better than 50 percent.

Have you measured the IMD at 300 watts output?  I bet it is significantly 
below that specified at the 200 watt level.