Post-loss Radio Messages--Overview: Difference between revisions
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* [http://tighar.org/Projects/Earhart/ResearchPapers/Brandenburg/WE-13.htm WE-13C Transmitter Harmonic Power Output.] | * [http://tighar.org/Projects/Earhart/ResearchPapers/Brandenburg/WE-13.htm WE-13C Transmitter Harmonic Power Output.] | ||
=== Battery Life === | |||
"Both batteries were rated at 85 ampere-hours. If both were at full charge on arrival at Niku -- a reasonable assumption -- there would have been enough charge for about 90 minutes of transmission time. The total transmission time required for all of the credible post-loss signals is 451 minutes."<ref>[[Brandenburg]] to EPAC, 1 April 2009. The careful reader will understand that the evaluation of post-loss messages continues and that, therefore, the total number of minutes to be accounted will vary with the estimate of credibility as the study continues.</ref> | |||
== References == | |||
<references/> | |||
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[[Category:Radio considerations]] | [[Category:Radio considerations]] | ||
Revision as of 16:29, 18 August 2009
World press reported many post loss radio signals like that heard by Nauru Radio published in the 5 July 1937 Canberra Times. (Courtesy: Australian Newspapers Beta Service)
A complete exposition and analysis of all reported radio contacts with the lost aircraft is to be found in Finding Amelia, by Ric Gillespie; the book contains a wealth of primary sources in a research library on a companion DVD.
- Betty’s Notebook. Notes taken by a teen-age girl in July of 1937 while listening to a short-wave radio.
- Dorothea Garsia Diary, Nauru, 1934-1938.
- The Pan American Airways Memos describe the efforts Pan Am made to take bearings on signals apparently coming from the downed aircraft.
Technical considerations
- Harmony and Power: Could Betty Have Heard Earhart on a Harmonic?
- Radio Direction Finder Analysis .
- The Radio Riddle.
- Post-Loss Signal Statistics with Tide Information.
- Post Loss Radio Signals (October 2000).
- WE-13C Transmitter Harmonic Power Output.
Battery Life
"Both batteries were rated at 85 ampere-hours. If both were at full charge on arrival at Niku -- a reasonable assumption -- there would have been enough charge for about 90 minutes of transmission time. The total transmission time required for all of the credible post-loss signals is 451 minutes."[1]
References
- ↑ Brandenburg to EPAC, 1 April 2009. The careful reader will understand that the evaluation of post-loss messages continues and that, therefore, the total number of minutes to be accounted will vary with the estimate of credibility as the study continues.