[Milsurplus] Question about Parasets

[Bruce Gentry]

>>
>> In a message dated 9/17/2010 12:00:04 PM Central Daylight Time,
>> kk7iz at cox.net writes:
>>     
>>> Since the 1 volt miniature tubes were introduced by RCA in 1940, were any
>>>
>>> Parasets
>>> built using this them?
>>>
>>>       
>
>
>   
Any of these sets or "spy rigs" I have encountered use octal or hearing 
aid tubes, and all I can recall are indirectly heated .  Because the 7 
pin miniature was so new,  it might have been smarter to use tubes that 
could be found more easily in enemy territory in case the radio was 
damaged.   Another  question arises- how popular were small ( lunchbox 
or coat pocket) battery portables outside of the USA in 1940?  Because 
of enemy occupation and other regulations,  they might have been very 
rare.   

     Bruce Gentry KA2IVY