[Milsurplus] A.E. Project ( If you accept this mission )

[Hue Miller]

I haven’t read TIGHAR for years, but I don’t recall anything about the transmitter being modified. 205 tubes were not hard to get in 1937
and I don’t recall any evidence she had any freqs channelized other than the standard 3105, 6210.
I would not call the equipment primitive. It was adequate, and equal to the military equipment for that class of plane at the time.
And – there’s evidence that the plane was equipped with the new Bendix RDF-1   500-8000 kHz DF loop tuner. ( The Navy ordered this
unit for their TBD bombers; the RDF-1 later became the DU ( no suffix ) ).  We had some discussion of this on milsurplus a few years
back, with Mike Hanz typically blowing minds by showing up with dates, facts, and schematics.
BTW, did y’all see that RDF-1 go for no money last month on Epay? I plumb forgot to bid.
-Hue Miller 

From: Dennis DuVall 
Details of Earhart's  radios are available on the TIGHAR site along with a LOT 
of other technical information. For an overall technical analysis and description of the radios see:
<.http://tighar.org/Projects/Earhart/Archives/Research/ResearchPapers/ElectraRadios/ElectraRadios.htm >

For a schematic of the 13C PA see: 
<http://tighar.org/Projects/Earhart/Archives/Research/ResearchPapers/ElectraRadios/FigureB.html>

Earhart’s radio was apparently modified, see:
<http://tighar.org/Projects/Earhart/Archives/Research/ResearchPapers/ElectraRadios/Schematic2.html>

Very primitive stuff by today’s standards and better equipment probably available at the time.

Dennis D.  W7QHO
Glendale, CA