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The radio receiver Yaesu FRG-7000 uses the "Wadley loop". [1] XCR-30. The "Wadley-drift-canceling-loop", also known as a "Wadley loop", is a system of two oscillators, a frequency synthesizer, and two frequency mixers in the radio-frequency signal path. The system was designed by Dr. Trevor Wadley in the 1940s in South Africa.
Ampex 601 playing a recording of "Les Paul's New Sound, Vol. II". Made in Redwood City, California, c. 1956. Internals of Ampex Fine Line F-44, a 3-head Ampex home-use audio tape recorder, c. 1965 AMPEX model 300 half-inch three-track recorder AMPEX 440 (2tr, 4tr) & 16-track MM 1000
The VAX 7000 and VAX 10000 are a discontinued family of high-end multiprocessor minicomputers developed and manufactured by Digital Equipment Corporation (DEC), introduced in July 1992. These systems use NVAX microprocessors implementing the VAX instruction set architecture , and run the OpenVMS operating system .
An Altera MAX 7000-series CPLD with 2500 gates. Die of an Altera EPM7032 EEPROM-based CPLD. Die size 3446x2252 μm. Technology node 1 μm. A complex programmable logic device (CPLD) is a programmable logic device with complexity between that of PALs and FPGAs, and architectural features of both.
Doppler radio direction finding, also known as Doppler DF, is a radio direction-finding method that generates accurate bearing information with minimal electronics. It is best suited to applications in VHF and UHF frequencies and takes only a short time to indicate a direction.
Example: The image shows two identical amplifiers A1 and A2 connected in bridge mode. The system is arranged in such a way that the outputs from the amplifiers are inverted with respect to each other. In other words, as the signal in one amplifier is swinging positively, the signal in the other is swinging negatively.
In 2002, Cheryl Vedoe, founder of Tenth Planet and VP of Education Marketing at Apple Inc., became CEO of Apex. [3] That same year, it acquired Beyond Books. Apex Learning acquired Boxer Math in 2003. [2] In 2006, Apex had a $6 million round of venture capital financing led by MK Capital [3]. [4] [better source needed]
This is a list of racetracks which have hosted a GT World Challenge America race between 1990 and 2022. This list includes SRO America's GT4 America , TC America and GT America series. Several nations have hosted a race, including the United States, Canada, Mexico, and Puerto Rico.