[Boatanchors] Globe Chief 90s

[James M. Walker]

How is your antenna output taken off the transmitter? The antenna 1 terminal
and ground are for 50 ohm systems, is that it? Else are you trying to 
connect across
terminals 1 --center of coax, and terminal 2 ground of coax?

With 475vdc on the 807s you should be getting around 60 - 70 watts at 50
ohms across the proper terminals.

Jim
WB2FCN

----- Original Message ----- 
From: "John King" <k5pgw at yahoo.com>
To: <Boatanchors at mailman.qth.net>
Sent: Tuesday, February 13, 2007 8:13 AM
Subject: [Boatanchors] Globe Chief 90s


>I have two Globe Chief 90 transmitters and both have
> very little grid drive and low RF output. Get a
> flicker of grid drive from 6AG7 oscillators to the two
> 807 tubes on each Globe Chief.
>
> Finals dip on both transformers, but the output is low
> on both. Output is only about 30 or 35 watts on each.
>
> I have actually took all parts out of one of them and
> reduced it to a kit and then rebuilt it according kit
> instructions. Same performance upon rebuilding. Tested
> all components and replaced all components with kinked
> up leads.
>
> Only two stages and three tubes so I am scratching my
> head. Your suggestions based on knowledge and
> experience will be greatly appreciated. 73, John, K5PGW
>
>
>
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