Post by Karl Welteke on Mar 27, 2022 14:41:19 GMT 8
Sound Detection Equipment!
The Battle of Bataan and the Siege of Corregidor was fought before sophisticated and common RADAR Equipment. The Anti-Aircraft defense in these two battles had to depend on this sound detection and optical detection equipment. During the middle of WWII this sound detection equipment became obsolete because of the development of RADAR.
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Friends sent me or made me aware of the next 3 images and sent comments.
Zf613. One sound detection device is partially shown on page 124 at this publication with Japanese troops behind it, click here for the source:
corregidor.org/refdoc/Reference_Reading/Gasei/45MB-Philippine-Expeditionary-Force-by-Gasei-1943.pdf/128/index.html
MB45 Philippine Expeditionary Force by Gasei 1943.pdf. It is available in the Corregidor.org Library. The researcher of the writing team of the new book “ Relentless Hope: A True Story of War and Survival, by David L. Britt”, John Duresky made me aware of it.
My friend John Moffitt who has visited Corregidor 60 times said this: The US Army had sound locators for this purpose on Corregidor. Big elephant eared beasts mounted on a trailer.
Zf614. This is a PLANE DETECTOR HEARING DEVICE wire photo, dated 21th May 1940. John Duresky sent this and he said: Not exactly user-friendly. According to this wire photo it took at least three men to operate one of these hearing devices for planes.
Zf615. This is the description of the previous image # Zf614; this is a PLANE DETECTOR HEARING DEVICE wire photo, dated 21th May 1940. John Duresky sent this and he said: Not exactly user-friendly. According to this wire photo it took at least three men to operate one of these hearing devices for planes.
Wikipedia has a page about “acoustic locations”, I copied 4 images, click here for the URL:
en.wikipedia.org/wiki/Acoustic_location
Zf612. Sound location equipment in Germany, 1939. It consists of four acoustic horns, a horizontal pair and a vertical pair, connected by rubber tubes to stethoscope type earphones worn by the two technicians left and right. The stereo earphones enabled one technician to determine the direction and the other the elevation of the aircraft. This picture is from Wikipedia, look for the URL above.
Zf616. This picture is from Wikipedia, look for the URL above.
Zf617. Pre-World War II photograph of Japanese Emperor Shōwa (Hirohito) inspecting military acoustic locators mounted on 4-wheel carriages. This picture is from Wikipedia, look for the URL above.
Zf618. Swedish soldiers operating an acoustic locator in 1940. This picture is from Wikipedia, look for the URL above.
Zf619. This is a Google Image Search for sound detecting equipment.
The Battle of Bataan and the Siege of Corregidor was fought before sophisticated and common RADAR Equipment. The Anti-Aircraft defense in these two battles had to depend on this sound detection and optical detection equipment. During the middle of WWII this sound detection equipment became obsolete because of the development of RADAR.
-----------------------------------------
Friends sent me or made me aware of the next 3 images and sent comments.
Zf613. One sound detection device is partially shown on page 124 at this publication with Japanese troops behind it, click here for the source:
corregidor.org/refdoc/Reference_Reading/Gasei/45MB-Philippine-Expeditionary-Force-by-Gasei-1943.pdf/128/index.html
MB45 Philippine Expeditionary Force by Gasei 1943.pdf. It is available in the Corregidor.org Library. The researcher of the writing team of the new book “ Relentless Hope: A True Story of War and Survival, by David L. Britt”, John Duresky made me aware of it.
My friend John Moffitt who has visited Corregidor 60 times said this: The US Army had sound locators for this purpose on Corregidor. Big elephant eared beasts mounted on a trailer.
Zf614. This is a PLANE DETECTOR HEARING DEVICE wire photo, dated 21th May 1940. John Duresky sent this and he said: Not exactly user-friendly. According to this wire photo it took at least three men to operate one of these hearing devices for planes.
Zf615. This is the description of the previous image # Zf614; this is a PLANE DETECTOR HEARING DEVICE wire photo, dated 21th May 1940. John Duresky sent this and he said: Not exactly user-friendly. According to this wire photo it took at least three men to operate one of these hearing devices for planes.
Wikipedia has a page about “acoustic locations”, I copied 4 images, click here for the URL:
en.wikipedia.org/wiki/Acoustic_location
Zf612. Sound location equipment in Germany, 1939. It consists of four acoustic horns, a horizontal pair and a vertical pair, connected by rubber tubes to stethoscope type earphones worn by the two technicians left and right. The stereo earphones enabled one technician to determine the direction and the other the elevation of the aircraft. This picture is from Wikipedia, look for the URL above.
Zf616. This picture is from Wikipedia, look for the URL above.
Zf617. Pre-World War II photograph of Japanese Emperor Shōwa (Hirohito) inspecting military acoustic locators mounted on 4-wheel carriages. This picture is from Wikipedia, look for the URL above.
Zf618. Swedish soldiers operating an acoustic locator in 1940. This picture is from Wikipedia, look for the URL above.
Zf619. This is a Google Image Search for sound detecting equipment.