INEXPENSIVE UHF TRANSCEIVER LEVERAGING COTS COMPONENTS
This paper describes the design of an inexpensive UHF transceiver which leverages some of the recently developed commercial off-the-shelf (COTS) components. The initial goal is to implement digital voice transmit and receive function, although the design can accommodate a wide range of digital commu...
| Main Authors: | , , |
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| Other Authors: | |
| Language: | en_US |
| Published: |
International Foundation for Telemetering
2017
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| Subjects: | |
| Online Access: | http://hdl.handle.net/10150/626996 http://arizona.openrepository.com/arizona/handle/10150/626996 |
| Summary: | This paper describes the design of an inexpensive UHF transceiver which leverages some of the recently developed commercial off-the-shelf (COTS) components. The initial goal is to implement digital voice transmit and receive function, although the design can accommodate a wide range of digital communication and telemetry applications. The handheld transceiver transmits 5 watts of power in the 430-435 MHz UHF band. A 1.2 kHz wide GFSK modulation format is used, generated by a Silicon Labs radio chip. The recently released Raspberry Pi Zero processor implements a low bit rate audio coding which conforms to the Codec2 standard. The transceiver fits in a 3 cm x 8 cm x 14 cm volume. It is powered by two 18650 lithium ion cells, and draws approximately 1 watt of power during receive, and 6 watts during transmission. |
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