Re: show your mic

 

Max,

From board to board there will always be some variation of gain.

You can increasing the mic gain by reducing the resistor

BITX40 - R123
uBITX - R63

You could try the mic gain control I described recently.

You could also increase the drive

BITX40 - R136
uBITX - RV1

Raj


At 21/04/2018, you wrote:
Speaking of mics, I have to raise my voice almost to the level of shouting to get 5 watts out on 40 meters.  Is this normal or should I look for a problem?
 
Regards.
 
Max K 4 O D S.
 
I've Never Lost the Wonder.
 
Antique Electronics Site: http://www.angelfire.com/electronic/funwithtubes/

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