ORIGINAL MESSAGE:
At 10:44 AM 1/22/2006, VSH-RW4WZ wrote:
>Good idea, but it seems for me it will be cheaper and easy to build PA
>using
>one tube and 5 PI networks which is switch by 10 relays......
>We build 30 years ago such a kind PA at UK4WAR ;)
>
>73!
>
>Larry
>
>RW4WZ
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
That would be good too if you can keep the lead lengths down. Also, a
relay to switch the plate end of the pi net would have to be pretty
substantial ($$$). I like the idea though.
Perhaps the tube could be in the center and the networks laid out
like spokes of a wheel? That would take a lot of chassis space, but
so would separate amps.
Or maybe a single tapped coil and separate tune/load caps being
switched in and out?
How did you do it at VK4WAR?
73, Bill W6WRT
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