>
>I found a broken National NCL-2000 cheap. I'm wondering if anyone on the list
>has a schematic for this puppy. Scanned and e-mailed would be great.
>
>It's marked "Bad plate relay". Makes me wonder if the plate relay is bad
>because gas arcing in the tubes ate the relay or it just got tired. Any
>insight
>would be great. Replacing the 8122's could raise the price of the amp quite a
>bit.
>
>Also, it's a 80-40-20-15-10 Meter amp. Anyone done a mode to pick up any
>of the
>new bands? Hopeing it's just changing the switch and adding some taps on the
>output tank. The input is "passive" so that isn't tuned (I believe).
>
>I like the use of tetrodes in this amp as opposed to the more typical triode
>designs in most other Ham amps. More elements is better right? :)
>
>If anyone has any strong opinions about this amp I'm happy to hear them. I'm
>going to be using it with a Yeasu FT-847. I figure I'm going to have to
>buffer
>the transmit output to drive the amp's relay input and maybe futz with the
>ALC
>a bit. Any other thoughts?
>
My Web site has a ncl-2000 diagram with all the mods that are worthwhile.
.
- Rich..., 805.386.3734, www.vcnet.com/measures.
end
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