"Mike Silva" wrote in news:1117989475.147628.191590
@f14g2000cwb.googlegroups.com:

The only difference in capacitance I see is Cgp, 0.24 pF for the 6146A
vs. 0.22 pF for the 6146 and the 6146B. Doesn't sound like any
difference at all, unless maybe the average values are quite a bit
different for the 6146B vs. the other two (but what would cause that?).
I don't question those who say there's a problem with some rigs, but
on paper all three tubes do seem to be the same (at the lower screen
voltage the 6146 is designed for). Apparently RCA thought the same
thing.

No conclusions, just ruminations...

73,
Mike, KK6GM





There is no real difference. The 6146B was very popular in the 1960's.
Everyone was switching over to them with no problems. Trust me, I was
there. One guy writes an article expressing an erroneous opinion about them
and it becomes fact. It's nothing but an internet myth. Maybe he wanted to
corner the market on the 6146B's? Like I said, I'm still looking for a
radio they won't work in.


Darrell