Time and Tide analysis.
https://tighar.org/Publications/TTracks/2013Vol_29/February_2013/Time_And_Tide.pdfPost loss Catalog has analysis.
https://tighar.org/Projects/Earhart/Archives/Research/ResearchPapers/Brandenburg/signalcatalog.htmlThese are the credible signals (Green Identifier) where a voice can be deduced to be a man or woman(“Earhart”). There are other credible signals that identify a voice but are not listed below because it was not clear who was talking.
The intent is to see if there is a window where one of the crew could have been ashore while the other was in the plane.
30555IA July 2 -6:55 PM-Woman’s voice
30800LE July 2 -9:00PM -Woman’s voice
31900PX July 3-8:00AM - Woman’s Voice but it mentions a storm and “we” can’t stay here long
40650HD July 3 7:50PM Woman’s voice
41031PU July 3 -11:31 PM – Man’s voice
41200CC July 4 -1:00 AM -Man’s voice
41215WD July 4-1:15 AM -Man’s voice
41500RH July 4 -4:00AM Woman’s voice (Randolph)
41500CB July 4 4:00AM -Conversation between man and woman(Crabb simultaneous to Randolph)
50638PY July 4 7:38 PM -Man’s voice
50908HD July 4 10:08 PM -Man’s voice
50916CS July 4 10:16-Woman’s voice
51200ME July 5, 1:00 AM-Woman’s voice
51417CV July 5 3:17 AM -Man’s Voice
51700CB July 5 6:00AM-Conversation between man and woman(Crabb)
52130KK July 5 10:30 AM -12:15PM Conversation between man and woman (Klenck)
61400CB July 6 3AM-Conversation between man and woman (Crabb)
71230LC July 7 1:30 AM-Woman’s Voice (Lovelace)
Based only on the signals in the catalog that provided information where you can identify that there is a man or a woman:
There is a possible large window where Earhart was heard and not Fred in the initial 13 hours or even 28 1/2 hours. July 2, 6:55pm to July 3, 8:00 am or even July 3, 11:31PM
There is a possible large window of 8 hours where Fred is heard and not Earhart. July 3 7:50PM to July 4, 4:00am
Then a mix of the two with oddly 3 instances of conversations being overheard between both of them near the end.