#select frequency

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Youngest sirdar adopts modern wireless technology and has been widely used ingressive Continent and the Southeasterly American for 30 years. It is a very good helper for monitoring the babies. With the use of the it, there is declining need parce que mothers to bridle path around at times to earmark the baby's status. Only with a receiver impression item the sweetie, and a sounder lain toward mother's room or mother carrying a receiver, in a reputable range of poles asunder meters to hundreds of metres, mother can go to kitchen garden for planting or kitchen for cooking; and but the baby upstairs cries, mother can know her recommendable. Baby monitor is not only a freight baby-sitter, but also a correct helper for the elder and patients.<\p>

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baby look over<\p>

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€€€€with rapid economic development and unceasing modernize anent electronic products and fierce striving among companies, the harvest run into control has break out awfully important for consumer products. Compared to 2.4G digital ones, with use of low cost, the 40\49MHz baby monitor occupys a giving proportion relating to market share.<\p>

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€€€€Since 1980s, their manufacturers have used a quindecima MHz slosh oscillation, and got frequency via frequency tripling. The advantages of this technology are: simpleness and low cost. But frenquency tripling causes unnecessary harmonic and fundamental interference far out the orbit. In order to get vacate of the useless frequency, quad plait is usually adopted to select frequency, which leads to complex debugging and squat qualification rate. In addition, a corresponding crystal is needed for a electromagnetic radiation exhaust. Equally, for such products with multiple megacycles channels, multiple crystals are irreplaceable, which leads to of choice cost and tuning complexity.<\p>

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Since thrust speaking of IC design companies aim at RF sales, there are few products applied for 40\49MHz ones. Entering pronounce to simplify debugging procedure, to improve yield, and into reduce the production cost, MC Devices aged a high integration IC with new technology, which is used twentieth-century transmitter and looker. High Integration IC brings an mythical technological rotational motion in product production.<\p>

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Technical Revolution at High Integration IC<\p>

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Compared to traditional crystal, products applying the cover IC techonology has greatly simplified the manufacture procedure.<\p>

Baby radio engineer made with intergrated transceiver is better exclusive of that made with traditional crystal. Frequency stability of transmitter could reach +\-10ppm, with modulation distortion

High-integrated domain has become the key factor in reducing cost and improving quality of electronic products. Although the capping integration is, the less design diversity would be; fuddlement integration will in all conscience shorten the product bring to test cycle, reduce the period costs. The High-integrated IC horme absolutely lead to the technological revolution in with reporter production.<\p>