Hi,
Have you calculated what the loaded, operating Q actually is?
You ordinarily don't want to exceed say, 13 or so.
73, K6XK
-----Original Message-----
From: William L. Fuqua III <wlfuqu00@pop.uky.edu>
To: amps@contesting.com <amps@contesting.com>
To: <amps@contesting.com>
Date: Friday, January 29, 1999 4:13 PM
Subject: [AMPS] B&W 850 in PI-L network
>
> I would like to use a B&W 850 with an additional coil w/switch
>to make a PI-L network for my 4-1000A GG amp. I will be running
>5 or 6 KV plate voltage which takes me up past 5Kohms plate impedance.
>The Q of the 850 is pretty high in that case.
> Actually, the inductance values seem to work out just about right
>according to the "Radio Handbook" if I offset the switch by one position.
>That is to make 80 Meter postion the 40 meter one, etc.
> Is there a problem running the 850 at these higer Qs?
>Does it get HOT? or burn out contacts? If anyone has any experience
>with this please reply.
>
>73
>Bill wa4lav
>
> William L. Fuqua III P.E. E-mail WLFUQU00@POP.UKY.EDU Phone (606)
257-4155
> Department of Physics and Astronomy CP-177 Chem. Phys. Bldg.
> University of Kentucky , Lexington, Ky 40506-0055
>
>
>
>
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