[ARC5] Loctal Tubes

[Bill Fuqua]

   Using 7 and 14 as first digits and also sometimes an odd last digit, not 
always the element count.
They were able to create a new series of tubes. Most of the times the last 
digit was accurate but to
prevent confusion they did not internally connect the suppressor grid thus 
increasing the count.
   Also, by stating 7 and 14 as nominal voltages suggested that the tubes 
were more compatible with
mobile use since the drain on the electrical system would cause the 
generator to kick in and increase
the voltage across the battery terminals.
    This is not from any historical information. It seem like a plausible 
explanation for the odd numbers.
The fact is locatal tubes were easier to manufacture than octals and was 
the predecessor to the
miniature tubes.