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Re: T41 Transmitting (noise in ssb)

 

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That¡¯s why I build the digital attenuator board to use with the PAs¡­? Use the full range of the A/D then¡­ and attenuate the power where it should be attenuated.

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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.

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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 Greg KF5N
Sent: Thursday, September 7, 2023 11:00 AM
To: [email protected]
Subject: Re: [SoftwareControlledHamRadio] T41 Transmitting (noise in ssb)

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It will take some calculating to discover the optimum amplitudes out of the Audio Hat.
Voice peaks need to be accounted for.? So you can't drive too hard or the peaks will get clipped.
The T41 power control is done by varying the I and Q amplitudes.? So that is another consideration.
If you want power varied from 1 watt to 20 watts that soaks up a lot of the DAC range.
And then you have to add the voice peak problem on top of that.

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73 Greg KF5N

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