書誌事項
- タイトル別名
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- ダイキキュウ トウサイヨウ スイショウ セイギョ FM ソウシンキ
- Crystal-Controlled FM Transmitter for Balloon Use
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A crystal-controlled transmitter has been developed for a telemetry system of a scientific balloon experiment. The transmitter is designed to send 16kHz PCM data or black and white TV camera signals by FM modulation. A carrier frequency of the transmitter is controlled by a PLL circuit and can be adjusted from 1670MHz to 1690MHz. The nominal out-put power is 0.5W and it can be easily increased to 5W by adopting a power booster amplifier. In order to eliminate EMI noise effect, the main unit of the transmitter is contained in a small aluminum case. It also serves as an effectve heat sink. The antenna unit is attached to a frame of a gondola and connected to the main unit through a coaxial cable. The transmitter was applied to 15 balloon flights and all worked well. The frequency drift was smaller than 16kHz nominal under the temperature condition in a stratosphere. The transmitter is expected to become one of the standare instrument for scientific balloon experiments.
資料番号: SA0166902000
収録刊行物
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- 宇宙科学研究所報告. 特集: 大気球研究報告
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宇宙科学研究所報告. 特集: 大気球研究報告 24 21-31, 1989-12
宇宙科学研究所
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詳細情報 詳細情報について
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- CRID
- 1050003824961862912
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- NII論文ID
- 110000222846
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- NII書誌ID
- AN00354485
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- ISSN
- 02859920
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- NDL書誌ID
- 3253839
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- 本文言語コード
- ja
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- 資料種別
- departmental bulletin paper
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- データソース種別
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- IRDB
- NDL
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