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Re: [Amps] Failure of a pair of FU728F

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Subject: Re: [Amps] Failure of a pair of FU728F
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Date: Thu, 19 Sep 2019 01:18:01 +0200
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Yes, the pi net design values for 4KW PEP are quite different to 1.5KW.
If designed for 4k, circuit Q will be almost doubled for 1.5k.
And I doubt it can be tuned on 10m with that high tube impedance.


-----Original Message-----
From: Amps [] On Behalf Of Joe Subich,
Sent: Mittwoch, 18. September 2019 23:14
Subject: Re: [Amps] Failure of a pair of FU728F

"Legal limit" AM is 375 W of carrier -> 1500 W PEP.  Whether the OM4000
can be tuned properly for that operating condition is another story.


    ... Joe, W4TV

On 2019-09-18 2:13 PM, Greg Wasik wrote:
> Guessing that if you wanted to run legal limit AM with the OM4000 you
> want to avoid any long pauses in your modulation so that the average power
> is at least 1KW.  A dead key would be deadly...
> Greg
> K1YW
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