[MRCA] T-195 Auto-NoTune

[aj1g at comcast.net]

Just a quick follow up on the Auto No-tune issue: 

To see if for some reason the deep cycle batteries were limiting the output voltage being supplied by the PP-7333, I open circuited the batteries leaving the PP7333 alone to carry the T-195 AFTER I had started the HV dyno in the CW mode. (Only after I tried to start the big dyno without the batteries and got the expected result, tripped the PP7333 output breaker and shut down the transmitter). After I started the HV dyno and open circuited the battery, the DC voltage being supplied to the transmitter from the PP7333 under full load while tuning was still only 26.7 volts, essentially the same as with the batteries floated on the supply output. And, not surprisingly, if Jeep's observation holds true, the set did not auto-tune. After turning off the transmitter, the no load output voltage of the power supply did rise up to 28.1volts,so apparently, the voltage regulation is not all that tight. So it looks like the next step is to figure out how to bump up the 7333 output voltage by a couple of volts, at least while attempting a tune cycle. 

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