[Boatanchors] B&W 850A Doc(s) needed

Gary Schafer garyschafer at comcast.net
Tue May 9 17:27:02 EDT 2006


Bob, which one do you have? There was an 850 and an 850A. One had copper
tubing for the main coil and the other had wire and more turns for the main
coil. I can never remember which model is which.

The difference is that the one with the copper tubing (and fewer turns) is
for low impedance plate loads like a 4CX1000 etc. The one with the wire coil
has more turns and is for tubes like 4-1000 or a pair of 4-400's with higher
plate impedance.

73
Gary  K4FMX


> -----Original Message-----
> From: boatanchors-bounces at mailman.qth.net [mailto:boatanchors-
> bounces at mailman.qth.net] On Behalf Of Rbethman
> Sent: Tuesday, May 09, 2006 12:48 PM
> To: boatanchors at mailman.qth.net
> Subject: [Boatanchors] B&W 850A Doc(s) needed
> 
> Subject says it all.  Need to get the info to know EXACTLY how it is
> connected.  Bought it used 4 or 5 years ago.
> 
> Bob - N0DGN
> 
> --
>                        Bob Bethman - NØDGN
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