Just picked up a 1930s Battery operated Coronado

[Electronic M]

Originally Posted by vortalexfan

OK, So I have a question about this radio:

Is it normal for a tube powered battery radio like this to drain the "B" Battery supply so that it goes from supplying 90VDC to the radio's B+ Circuit to a little over 50VDC to the B+ Circuit in the radio (which makes the radio barely operable) in less than 2 months?

I thought the "B" Battery supply was supposed to last almost two years with barely any use, and I'm using store brand 9V batteries like what was suggested by Radiotvphononut on one of his Youtube videos where repaired a similar radio to this and created a rigged up battery supply using modern 9V and "D" Cell Batteries.

Any Ideas as to what might cause this weird aforementioned issue?

Check your B+ current drain with the set on and off. If it draws current off something is wrong, if the on current is more than 20% higher than the sum of the max plate currents of the tubes data sheets then something is wrong....if the heaters are parallel wired you should be able to troubleshoot by pulling tubes one at a time and observing change in B+ current. The drop in current when a tube is pulled is what it's drawing, and if that exceeds what the data sheet says it should be then the circuit it's in is suspect. If all the tubes are out and its drawing substantial B+ current look for B+ shorts and resistive dividers off the B+.