SS3900 BLACK

[radiocom]

Hi all i have just acquired a SS3900b ( dirland ) EPT360014B

It has 2166 and 1969 finals im looking at setting the bias after going through the manual the one only has VR11 + VR10 bais and final adjustments

what are the recommended mA on the settings please the manual says between 25 and 45mA bias and 50mA final

thanks all

[13EL121]

Check for 0.7V base voltage. Should be round about 50mA for driver and finals. Normaly 50mA should be ok for 2sc2166, 2sc1969 and 2sc2312 etc...