公开(公告)号：US4186342A

公开(公告)日：1980-01-29

申请号：US848559

申请日：1977-11-04

申请人： Robert R. Kyle

发明人： Robert R. Kyle

IPC分类号： H04B1/38 ,  H03L7/193 ,  H04B1/03 ,  H04B1/40 ,  H05K5/00 ,  H03B3/08

CPC分类号： H05K5/0017 ,  H04B1/03 ,  H04B1/401 ,  H03L7/193 ,  H04B2001/3894

摘要： An improved marine radio telephone is disclosed which has a housing having an angular opening suitable for either above or below eye level installation and a chassis having printed wiring board support members including a tiltable front panel support member for adapting the front panel to correspond to the position of the housing when mounted therein and a rear support member for supporting the transmitter board and heat sink for improved heat dissipation. The front panel includes a keyboard having keys for selecting digits 0 to 9, an emergency channel, and weather channels, a display for displaying the channel selected, control knobs for volume and squelch control, and switches for power and U.S.A. or international channel selection. The printed wiring boards include a front panel board, a digital input/output and power board, a frequency synthesizer board, a receiver board and a transmitter board. The front panel board sends operating signals to and receives outputs from the other boards. The digital input/output board includes a digital detector means for producing binary coded numbers representative of the keys pressed, a load control means for alternately loading the binary coded numbers into a tens register and a units register, an illegal channel detector connected to the tens and units registers for detecting an improper channel selection, and a memory connected to the units register and producing in response to binary coded numbers for legal channels a synthesizer address code for the channel selected. The synethesizer board is connected to the digital input/output and power board to provide, in response to the synthesizer address code, a local oscillator signal for the receiver clearing receiver operation and an audio modulated signal for transmission during transmitter operation. A phase lock loss signal is produced for preventing illegal operation. The receiver board includes an improved squelch circuit which provides for fine tuning to eliminate noise without unnecessarily reducing the audio signal.

公开(公告)号：US4267597A

公开(公告)日：1981-05-12

申请号：US55108

申请日：1979-07-05

申请人： John P. Volpi ,  Robert R. Kyle

发明人： John P. Volpi ,  Robert R. Kyle

IPC分类号： H03J1/00 ,  H04B1/40

CPC分类号： H04B1/40 ,  H03J1/005

摘要： An improved marine radio telephone is disclosed having a microphone, display, speaker, and controls. The controls include switches and a keyboard located together with a display in a panel, a microphone conveniently located as to the front panel, and a push-to-talk switch incorporated in the microphone. A panel printed wiring board is provided for the control circuits. Digital logic circuits, including a special purpose microcomputer and a power supply mounted on a second printed wiring board, interface with the control circuits and display. The control circuits include circuit blocking means which can be readily removed to permit, when authorized, transmission on Coast Guard auxiliary channels 21, 23, 81, 82, and 83. A frequency synthesizer interfaces between the logic circuits and a transmitter and receiver. The synthesizer and receiver are mounted on a third PWB, and the transmitter is mounted on a fourth printed wiring board. The special purpose microcomputer has an on-chip ROM and RAM processing capability which allows continuous scanning of at least one preselected channel in addition to the scanning of the emergency channel "16" and the automatic switching of power from 25 watt to one watt with the selection of one of the three channels requiring one watt operation.

摘要翻译： 公开了一种改进的海上无线电话，其具有麦克风，显示器，扬声器和控制器。 控制器包括开关和与面板中的显示器一起设置的键盘，与前面板方便定位的麦克风以及并入麦克风的一键通开关。 为控制电路提供面板印刷线路板。 数字逻辑电路，包括专用微型计算机和安装在第二印刷电路板上的电源，与控制电路和显示器接口。 控制电路包括电路阻塞装置，当被授权在Coast Guard辅助通道21,23,81,82和83上传输时，可以容易地去除它们。频率合成器在逻辑电路与发射器和接收器之间进行接口。 合成器和接收器安装在第三PWB上，并且发射器安装在第四印刷线路板上。 专用微型计算机具有片上ROM和RAM处理能力，除了扫描紧急通道“16”之外，还允许至少一个预选通道的连续扫描以及将功率从25瓦特自动切换到一瓦特， 选择需要一瓦功能的三个通道之一。

公开(公告)号：US6016304A

公开(公告)日：2000-01-18

申请号：US904144

申请日：1997-07-31

申请人： Robert R. Kyle ,  William F. Dixon ,  Ronald L. Meyer

发明人： Robert R. Kyle ,  William F. Dixon ,  Ronald L. Meyer

IPC分类号： H01P1/18 ,  H01P1/22 ,  H01P5/04 ,  H03C5/00 ,  G01R31/08 ,  H04K1/02 ,  H04L27/14

CPC分类号： H03C5/00 ,  H01P5/04

摘要： An RF phase and/or amplitude control device (40) has a digitally controlled attenuator (41) at it input to adjust the overall output level of the output. The device includes an in-phase power divider (43) for splitting up the input signals over two paths (I and Q). The power divided signals in the two paths are further power divided and shifted in relative phase at 180.degree. hybrids (49 and 50). The power divided and phases shifted signals in each path I and Q are selectively switched using switches (51 and 53). The selected and switched output is quadrative combined at a 90.degree. hybrid (55). This provides a single inexpensive device which can provide digitally controlled output signals which are either phase controlled or amplitude controlled or both.

摘要翻译： RF相位和/或幅度控制装置（40）在其输入处具有数字控制的衰减器（41），以调节输出的总输出电平。 该装置包括用于通过两条路径（I和Q）分离输入信号的同相功率分配器（43）。 两条路径中的分频信号在180°混合（49和50）的相位相位上进一步分频和移位。 使用开关（51和53）选择性地切换每个路径I和Q中的功率分配和相移信号。 选择和切换输出在90°混合（55）下进行二次组合。 这提供了一种廉价的设备，其可以提供数字控制的输出信号，这些输出信号是相位控制的或幅度控制的，或两者都是。