[BULK] - [Amps] 2m Linear Amp Enquiry

[Steve Katz]

> Has anybody got experience of the Amp listed in the Tech web pages of
> 6m.com?  It was for 2m using 2-4cx250b (shown as Horizons 12-62) zip file
> c5
> It looks easy to build, and has a PI output network. 
> 
> //The 6mt.com website is so painfully slow to load I don't have the time
> to look for this; however a pi-network for high power on two meters seems
> like folly.  Every dual 4CX250 amp I've ever built for 2m (several of
> them) always used the tubes in push-pull with tuned plate lines, tuned by
> a tiny bit of variable C between the tubes, and link coupling.
> Efficiencies of >65% are common, all the parts are from the hardware
> store, and the tubes run very cool.  I've never seen anyone actually get a
> 2m pi-net working at a kilowatt...-WB2WIK/6
> 
> 
>  I guess it was an
> early design but with some
> modifications (say better grid bias and screen protection, etc.), would it
> /
> did it
> give good performance compared to other designs?
> 
> David
> 
> 
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