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Re: K9HZ PA


 

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Hi Wade¡­ the Assembly manual covers all of these topics¡­?? IF you need help with the input attenuator, just ask for the specific example (formulas are in the manual)¡­

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Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ

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Owner - Operator

Big Signal Ranch ¨C K9ZC

Staunton, Illinois

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Owner ¨C Operator

Villa Grand Piton ¨C J68HZ

Soufriere, St. Lucia W.I.

Rent it:

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Moderator: North American QRO Group at Groups.IO.

Moderator: Amateur Radio Builders Group at Groups.IO.

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email:? bill@...

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From: [email protected] <[email protected]> On Behalf Of Wayde VA3NCA/AD2GX via groups.io
Sent: Tuesday, February 11, 2025 11:47 AM
To: [email protected]
Subject: Re: [AmateurRadioBuilders] K9HZ PA

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Hi Dr Schmidt, and everyone here!

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I'm finally getting to start the build of your 20W PA semi-kit. I will eventually use it with my T41 build as I get there, but would like to experiment a little with it as a standalone amp in the meantime.

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Does anyone have a generic block diagram on how this would integrate into an arbitrary other radio? I assume the following needs consideration:? rf-in power matching ( via the input power pad on board)? , rf-out lpf , ptt voltage interface conversion (if necessary), and TR switching? Anything else that would need to be handled?

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If a specific other qrp radio integration has been documented someplace, I'd be interested in reviewing that too!

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Thanks! and 73, Wayde VA3NCA/AD2GX?

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