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Re: K9HZ PA


 

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That should not be a big deal unless the mode is a digital continuous one like FT8 etc. ?

You need 8 watts to drive my 100W PA to full power so the 20W intermediate stage is the right module for that purpose. ?


Dr.?William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ

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Owner - Operator

Big Signal Ranch ¨C K9ZC

Staunton, Illinois

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Owner ¨C Operator

Villa Grand Piton - J68HZ

Soufriere, St. Lucia W.I.

Rent it: www.VillaGrandPiton.com


email:??bill@...

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On Feb 22, 2025, at 3:30?PM, Gary via groups.io <w9td@...> wrote:

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Wayde,
The attenuator on the amp is made with 1/8 W SMD resistors, so 100mW would about the most power you could drive it with. It only needs 1 mW to drive it to full power so you would have to dissipate nearly all the 100mW of drive in the attenuator. I think you need to consider an external attenuator which absorbs most of the drive power. In any case, if you already have a 5W rig, why do you need a 20 W amp? For 6dB?
Gary
W9TD

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