I should have qualified my question...i.e. running a typical operation of
2000 to 2500 DC plate voltage under 250 Mhz in Class AB1 configuration. Has
anyone constructed three 4CX350A's or 4CX300A's in parallel operation with
one KW DC input. I suspect from the answers here that it has not been
accomplished and may be impossible to resonate the plate circuit on
frequencies above 30 Mhz due to the plate capacitance of three tubes in
parallel.
Hip boots securely fastened at all times.
George W7LFD
-----Original Message-----
From: owner-amps@contesting.com [mailto:owner-amps@contesting.com]On Behalf
Of Bob Duckworth
Sent: Monday, April 23, 2001 4:17 AM
To: Dfmich@aol.com; amps@contesting.com
Subject: Re: [AMPS] 4CX350A
Dan-
You are correct. Tek employed a distributed amp
as well as some of the early RADAR gear.
One needs hip boots around here at times :-)
-bob
----------
| From: Dfmich@aol.com
...
| One would have to look at all the gory details to nail this down but I am
| willing to bet that the 75 MHz amp for the Tektronix scope was a
distributed
| amplifier. The tubes is such an animal are not in parallel. Rather, they
...
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