[AMRadio] : BC 610

[Jim Miller WB5OXQ]

I have a friend who had one of these transmitters and we did not know what 
it really was good for.  We could not connect it to try it out because it 
seems to me it needed 220vac and we only had 110vac at his house.  I do not 
know if it is still there but it might be.  Are these real good on am phone? 
Does it require a carbon mic?  How much output are they good for on AM? 
This one looked to be in good condition
WB5OXQ