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Re: V3 versus V2 SBITX Board - What are the differences?


Mike KW1ND
 

Re-reading over the "sbitxv3 PA changes and measurements" doc* I see this item, but I don't recall reading of anyone making the changes (nor the other 2 changes preceding this).

3.
The standing current in the diodes that switch the LPFs was found insufficient on 3.5 MHz, hence, the resistors R201, R202, R203 and R204 are changed from 470 ohms to 330 ohms.

Just how "insufficient" was the current, and is it recommended? I have V2 hardware.

Thanks,
Mike

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