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Don't know. Why did people back in the day push their PDX and Phantom sweep tubers to over 1kw? Human nature I suppose.  Like I say I run mine at half the builders recommended max drive and get good numbers (500-800 pep depends AM,  SSB and mic used.) Now just need to add that to a beam and exponentially increase my directed "clean" power (Hammers dont start with me I know class B bias isn't "clean" in your world but in 11m it does the job)