05-14-2013, 02:54 PM
B- is most easily found at the black lead of the filter capacitor. Don't use the chassis ground, but do use an isolation transformer to plug the radio into if you have one.
DMM's are not the best for measuring a changing voltage, such as when you are aligning your radio. An analog meter is much better. In this case, the ohms per volt figure is not so critical, since you are looking for voltage peaks, not a particular voltage. If you don't have an analog meter, or, even better, a scope, you can probably do better by ear than with a DMM because of the latter's slow response curve.
DMM's are not the best for measuring a changing voltage, such as when you are aligning your radio. An analog meter is much better. In this case, the ohms per volt figure is not so critical, since you are looking for voltage peaks, not a particular voltage. If you don't have an analog meter, or, even better, a scope, you can probably do better by ear than with a DMM because of the latter's slow response curve.
