Simultaneous translations, training for special events reporting, commentary along a monophonic recording, singing or playing musical instruments in unison with another voice etc. The mixed signals of the first transfer operation are now on channel II. Since the recording on channel I will get erased in the subsequent transfer operation, the mix on channel I I must be a final one because repetition is not possible, except by starting from the beginning again.

Remember … The tape is not easily offended, if you are making a mistake, it is always possible to start all over again by erasing previous recordings .… The most numerous and successful variant of Triple Seven is the 777-300ER, also known by its ICAO designation as the B77W. As over 40 years of old it need recapping ,Replacing some old parts ( Easy to find and plenty of parts available through e- shopping) . After overhauled by qualified professionals tech with standard numaicle adjustments, WOW ...... its peace of jem and ready to life time service again. The oldest B77W airframes are over 15 years old, and the high volume of use leads to wear and tear. The remarkable mechanical and electronic stability of the tape transport mechanism makes b77 most popular among audiophiles.

Key specs

If the recording has to take place on channel II, the microphone must be connected to input MIC CH I. The 777 fleet as a whole are among the safest planes to ever fly, with only 0.4% of the fleet being written off due to accident. Specs were remarkable for a machine measuring only 15½x16x7in, compared to console types found in studios. The signal-to-noise ratio was stated as better than 58dB at 7½ips and 56dB at 3¾ips, with crosstalk better than 45dB in stereo undistinguished by today’s standards, but a recent listen to master tapes on a mint B77 proved it to be more than good enough for “high end” usage. It never was a populist format, however often magazines like Playboy featured them in “bachelor pad” layouts in the 1950s and 1960s. They were owned mainly by the hard-core audiophiles of the day, those with 1) enough money to feed them open-reel tape, which never was affordable in the manner of the later cassettes, let alone CD-Rs, 2) no aversion to a conscientious handling regimen as irritating as that of LPs, and 3) an appetite or need for the ability to record. And costly pre-recorded open-reel tapes were always of limited appeal. You’ve probably heard the term, GPA or Grade Point Average, and discovered how important it is during high school, college, and your early career.

Press record pre-selector button REC CH II (35) (button REC CH I (32) must be in its released position), and turn stereo/mono mode selector (12) to position II. The specifications for the B77 required Full Fuzing Option (FUFO) and the ability for a low altitude, transonic laydown delivery, as well as a free fall from supersonic speeds and altitudes of 60,000 feet (18,000m) delivery. To achieve the low-level delivery capability, the B77 employed a gas generator for roll control and a lifting parachute as the initial part of a two-stage parachute system. This combination would actually lift the bomb from a drop altitude of 100 to 300 feet (30 to 91m) for main parachute opening. The roll control/parachute system was tested at Mach 2.2. From a delivery altitude of 100 feet (30m) at Mach 2.2, the B77 could be slowed to 40mph (64km/h) allowing the delivery aircraft to be 2.3 miles (3.7km) past ground zero. Actual detonation time could be varied after the laydown had occurred.Monitor selector TAPE/INPUT (16) set to position TAPE. Adjust for convenient headphone volume with potentiometer VOLUME (12). Start the tape machine in the recording mode and repeat the language lesson by speaking into the microphone. This might seem kind of like Algebra! You might be saying to yourself, “When am I ever going to need to know how to convert my GPA to a letter grade, or understand a college grading scale.”

G77 + China aprueba la reincorporación de México – DW – 17/09/2023". dw.com (in Spanish). 17 September 2023 . Retrieved 18 September 2023. Turn monitor selector (14) to position NAB (or TAPE respectively). The position INPUT may be used for rehearsal. The potentiometer LEVEL II (17) controls the portion of the new signal (second voice) which is to be added.

C77b

a b Shinn, David H.; Eisenman, Joshua (2023). China's Relations with Africa: a New Era of Strategic Engagement. New York: Columbia University Press. ISBN 978-0-231-21001-0. Haven't had an A77 but have enough B77s and PR99s. I've seen pics of the inside of A77 and also read through the service manual. As Tinman wrote, much better to work with a B77. Note: For overdub operations, this switch is always set to INPUT, because one has to listen to the previous recording (tempo information) ahead of the new recording process. Potentiometer LEVEL I (15) controls the intensity of the third voice or instrument which is to be added. As of 2023, the group comprises all of the UN member states (along with the UN observer State of Palestine), excluding the following countries: