[Collins] 6146B Circuit change

[Jim Brannigan]

  If I recall, running 6146B's at full power required a change in the screen
voltage.  But, I agree with Jerry, it is not worth it.
Jim


> The only comment I recall seeing was "DON'T use 6146B." Not because of
> neutralization but because the output tank components (probably the
> loading padding capacitor) and handle the extra current from loading up
> 6146B to their full ratings.
>
> I put 6146B in my 32S1 decades ago and I didn't change the
> neutralization circuit. I also run them at 6146 ratings. The tubes will
> last virtually forever and I don't fry the output tank components. That
> is the proper way to run 6146B. The added 1 dB from running the extra
> power of the 6146B won't be detected at the other end of any path, yet
> the added melting of tank circuit components will be detected locally.
> Switch wafers and large compression mica capacitors are not readily
> obtained nor easily replaced.
>
> 73, Jerry, K0CQ