ORIGINAL MESSAGE:


I don't remember where I have read that only the control grid had
physically push to ground, while the others grid(s) was electrically
floating and connected to ground through of the capacitors....


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The control grid should be connected directly to ground but never allow
the other grids to float. They must either be connected to a standard
bias supply or grounded themselves. If they are floating, they will
pick up a charge and do things you don't want them to do. :-)

Connecting all grids to ground was a common practice in the old days
but is rarely done anymore, due I believe to bad linearity. If you're
only doing CW, FM or RTTY, linearity is not an issue and it should work
fine that way.

Bill, W6WRT

The control grid should be connected directly to ground but never allow
the other grids to float. They must either be connected to a standard
bias supply or grounded themselves. If they are floating, they will
pick up a charge and do things you don't want them to do. :-)

Connecting all grids to ground was a common practice in the old days
but is rarely done anymore, due I believe to bad linearity. If you're
only doing CW, FM or RTTY, linearity is not an issue and it should work
fine that way.

Bill, W6WRT

Thanks Bill...
--
73's de IZ5FCY Roberto