[AMPS] B&W 851/852

[Peter Gerba]

Hi Skip;

I'm using an 852 in my 8877 amp (under construction)..B&W says:
2K-4K vdc
out 50-75 ohms
taps..

3.72uh / 268pf
2.34  / 144
1.34  / 73
0.95 / 36

The fellow I spoke to at B&W told me the unit was designed for 2 8877s.

If my data is incorrect (Tom ?) please let me know.

pete, kn6bi


Peter Gerba
pgerba@crl.com

On Wed, 23 Apr 1997, Bob Morris K2RK wrote:

> Skip wrote:
> > 
> > Hello all,
> > I've just found the group here and signed on. I've made some measurements
> > of a B&W 852 coil assembly. Doing the paperwork with some of the values
> > I've measured and the common charts for Pi outputs, I conclude that the
> > values are pretty "general" for the advertised use.
> > 
> > Instead of "tweaking" this one in, it was just easier to machine a new
> > assembly with the proper values for my circuit.
> > Has this been brought up before and have any of you experienced this same
> > issue? Although the unit I have is used, I believe it to be unmodified.
> > 
> > thanks
> > Skip  wv6f
> > 
> > --
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> 
>      Bill Orr mentions the values in one of the Handbooks, and
> the mods necessary. But just do the math. The listed values (850)
> don't "keep" the same plate impedance for each band. (?). Some were 
> quite far off. As I remember doing it, remove a couple of turns and
> re-tap a couple of bands (Again on an 850).
> 
> --
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