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 B- on old radio

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Cliff Jones
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Site Administrator
Cliff Jones


Join date : 2010-11-22

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PostSubject: Re: B- on old radio   B- on old radio I_icon_minitimeAugust 22nd 2012, 11:47 pm

It is where the Ground connection on your radio is used. Normally the AC filter caps have a positive sign and a negative sign. The negative sign is the same as B-, so hook up the ground side of the signal generator to this connection. BE WARNED however that you had better use an Isolation transformer. IF this radio is an AA5 radio. Or sparks may fly and blow out your equipment and radio. The reason I say this is just because the way you asked the question, it says you have no experiences in radio repairing. So be careful!

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johnwater
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Join date : 2012-08-22

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PostSubject: B- on old radio   B- on old radio I_icon_minitimeAugust 22nd 2012, 2:26 pm

I have motorola C1N model and schematic,trying to align with signal gen.Instructions say connect high side to grid of converter tube,low side to B-.I dont know exactly what is B-.can anyone advise me on that?
thanks
john
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