[Amps] Tuned input board on SB-220

[Roger D Johnson]

k7rdx wrote:
> But if you employ the tuner in the driver, the length of coax to the tube
> cathode becomes another issue. I am confident the engineers at LDG as well
> as those who tested their tuner boards in amps prior to them releasing the
> product for sale,have looked at all the angles,,,All I want to report to
> this group is the fact the tuner does a great job for me and if it makes you
> happy to question it`s operation then so be it...Jim..K7RDX..

I'd be a lot more confident if there were some published figures for IMD
products using an L network vs a Pi network. We really don't need more
amplifiers spewing out higher levels intermodulation products.

73, Roger


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