Tis true
This continued for many years as remote farms had no electrical power
Typical was two 45 Volt batteries

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Keyboard to you


Hey I can buy A batteries, (AA, and AAA), and C batteries -- right
What happened to the B battery ???

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Keyboard In the Wilderness

Tony

In the beginning every radio, or virtually every radio, was battery
operated.
They all used B batteries. It was only later that radio ran off AC line
voltage.

Michael