"The signal on the Zibby is dead" - what is the meaning of "Zibby"?
score:22
The US Navy used a classified (at the time) homing system during WWII called the YE/ZB series. It was a homing system designed to guide aircraft safely back to their carriers. Although I have no source to back this up, I suspect 'zibby' is referencing the aircraft's ZB system (the YE system was the beacon on the carrier).
The ZB homing system
The ZB system was a rather ingenious method, classified until 1947, of homing in to an aircraft carrier. The carrier sent out a Morse code letter for every of 30 degrees of the carrier's compass direction points synchronized with the position of a rotating antenna. The coded letters for each of the twelve compass points were changed each day and sent as Modulated CW (Morse code tones). The code was modulated in the lower part of the broadcast band (for example at 800 KHz). That broadcast band RF signal was then used to further modulate the 234 to 258 Megahertz VHF signal (called UHF in the era). The VHF signal was mostly line-of-sight. If the pilot could hear one or two of the Morse code letters, he would know his relative position to the carrier. The double modulation would make it difficult for an enemy to easily detect the MCW content of the signal. The VHF signal was reportedly reliable to about 40 to 70 miles out for an aircraft at 10,000 feet and further at higher altitudes. The accessory ZB adapter was a relatively simple VHF receiver that would demodulate the received signal back to the lower portion of the broadcast band and the MCW signals were then detected by the ARB.
(info taken from this page on the Ohio University amateur radio pages.)
More post
- 📝 What happened at the Battle (or not?) of Luding Bridge, during the Long March of Chinese Communists in 1935?
- 📝 Why are modern tanks regiments called cavalry?
- 📝 Did colonists "resign the power of voting" and have no more right to govern themselves than the Cornish people?
- 📝 How long would a letter take to arrive in Geneva from Ingolstadt? (Georgian era)
- 📝 During the Great Depression, roughly what proportion of Americans lived below the World Bank PPP $1.25/day poverty line?
- 📝 Does the phrase "The empire on which the sun never sets" predate knowledge that the world is round?
- 📝 How many USA men dodged the draft in Vietnam, and how?
- 📝 Were Russians less racist than I thought?
- 📝 Are these Polish WWI or WW2 uniforms? And any idea on the shorter gentleman's military decoration (cross?) on left shoulder?
- 📝 How do we reconcile hierarchical and violent aspects of Ancient Egypt with its nonviolent principle of Maat, as exemplified in negative confessions?
- 📝 What wars or other serious crises have been caused by translation?
- 📝 Is there a population density map of pre-Columbian South America?
- 📝 Did the Sword of the Republic really fall from the Arc de Triomphe on the first day of the Battle of Verdun?
- 📝 When were the first deaths from the Spanish Flu Pandemic?
- 📝 Were the first African Americans in Jamestown slaves or indentured servants?
- 📝 What WW2 German badge is this?
- 📝 When did furniture become common in the homes of most people in the British Isles?
- 📝 Why did the Roman military start to favour swords over the spear phalanx?
- 📝 What is the origin of these WW1 "official history" maps?
- 📝 Why didn't the Roman Princeps restructure or dismantle the Praetorian Guard?
- 📝 How did Ram and Krishna become the dominant Gods in Hinduism?
- 📝 Why did the Swabian Hohenzollern princes give away their power to the Prussian king in 1850?
- 📝 Are there any influences of sinification in modern times?
- 📝 Circa 1000, what name would locals in England use for invaders?
- 📝 What does "MET HLS INDIA" inscribed on a bottom of brass sugar bowl mean?
- 📝 What was the price of a theatre ticket in London during WW2?
- 📝 What led to the creation of Belgium?
- 📝 Did WWII Delay Indian Independence?
- 📝 Why did the north and south struggle to control the territories before the American Civil War?
- 📝 Did French people in 19th century not bathe every day?
Source: stackoverflow.com
Search Posts
Related post
- 📝 "The signal on the Zibby is dead" - what is the meaning of "Zibby"?
- 📝 What is the meaning of people "looking elsewhere" on medieval paintings?
- 📝 What is the meaning of a glove on the tail of monsters in illuminated manuscripts?
- 📝 What is the name and meaning of a World War 2 CCC Medal with both the Polish Eagle and British Statant Gardant Lion?
- 📝 What was the meaning of the following Neville Chamberlain quote?
- 📝 What is the meaning of the hand gesture performed by King James II in the portrait by Peter Lely?
- 📝 What is the meaning of the cross on a Chinese bronze Gu Chalice?
- 📝 What is the meaning of Verte! at the end of Sisi’s autopsy report?
- 📝 What is the meaning of "£10 per cent" in the early 19th century in relation to a wage (30/- fortnight)
- 📝 What is the exact meaning of England vs. Britain before/during/after the formation of the Kingdom of England in the Middle Ages?
- 📝 What is the meaning of this samurai crest?
- 📝 What is the meaning behind this Panama joke published in a 1914 newspaper?
- 📝 What is the meaning behind Thomas Nast's political cartoon "Compromise--Indeed!"?
- 📝 What is the meaning of the quadruple symbols combination on a possibly Roman monumental piece?
- 📝 What is the meaning of the medieval word 'bliant', used to describe a fabric?
- 📝 What is the meaning of the elements of this emblem?
- 📝 What is the meaning of this phrase in chapter 64 of the Book of the Dead?
- 📝 What was the meaning of Auguste Delfosse's statement "La liberté française pour faire le tour du monde n'a pas besoin de passer en Belgique!"
- 📝 What is the meaning of this short passage in Thomas Carlyle's 'French Revolution'?
- 📝 What would have been the signal that Pontiac would have given to attack in Fort Detroit?
- 📝 What is the meaning of the images on the medal granted with the Nobel prize?
- 📝 What is the meaning of George S Patton's quote "Nobody ever defended anything successfully, there is only attack and attack and attack some more?"
- 📝 What was the meaning behind these lip make-ups in Ancient China?
- 📝 Did Adolf Hitler ever address the fact that his own appearance was almost an exact opposite of what he considered the ideal Aryan appearance?
- 📝 What is the origin of 3 meals a day?
- 📝 What is the first recorded dog name?
- 📝 What drugs were used in England during the High Middle Ages?
- 📝 What knowledge may have been lost at the Library of Alexandria?
- 📝 What were the reasons for the Renaissance / scientific revolution in Europe?
- 📝 What fueled the street lights in 13th-century Cordoba?