On Sat, 29 Aug 2009 21:30:02 -0400, "Joe Subich, W4TV" <lists@subich.com> wrote:
>
>No, I'm saying they are all designed to operate at 1500 Watts
>output. If one reduces power without reducing the plate voltage
>appropriately, the plate load impedance will change. Unless the
>"L" in the pi-network is changed to the correct value for the new
>plate load impedance, the pi network will be very different than
>what was designed for normal operation.
That part is correct, however only the efficiency suffers. No harm is done..
>
>If the components (particularly the pi-network coil and band
>switch) are not sized appropriately for the higher currents
>and voltages, they will fail prematurely.
That part is incorrect. The voltages and currents do not increase when power is
reduced. They decrease.
73, Bill W6WRT
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