>
>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.
>
? add another tube, current increases, RL decreases and C-tune needs to
increase in order to maintain design Q. / / . I saw 2, 4CX350As that
ran 2500v @ 600mA . P-out was c. 900w pep.
>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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>
>
>--
>FAQ on WWW: http://www.contesting.com/FAQ/amps
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>
>
- Rich..., 805.386.3734, www.vcnet.com/measures.
end
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