[NJARC] Western Electric 215A "Peanut" Tube

[Yardleyite at aol.com]

Dear Fellow NJARC Members,
                                            I was wondering if anyone knew 
what the original applications for the Western  Electric 215A "peanut" tube was 
and why it was originally produced? I know the  specs, etc. To my knowledge it 
was used in a few of the early  superheterodyne kits in the mid '20's, but 
don't know of any "specific"  applications for it. Was it Western Electric's 
answer to an 01A in a smaller  package? Was it developed for telephone relay 
amplifiers, hence it's  "diminuitive" size compared to an 01A? 
 
I believe it was intended as a "detector-amplifier" like the 01A, but did  it 
exhibit any specific characteristics like say, a #00 tube or a gaseous  
detector in Armstrong regenerative circuts, etc? 
 
Any insight will be appreciated. I have 5 NOS ones I'd like to build  
something with someday to make them "sing for their supper" in a early-mid '20's  
retro receiver project, etc.
                                                                              
          Best  Regards,
                                                                              
                              Joe Cro N3IBX