Telecommunications – Receiver or analog modulated signal frequency converter – Measuring or testing of receiver
Patent
1994-03-11
1997-03-18
Eisenzopf, Reinhard J.
Telecommunications
Receiver or analog modulated signal frequency converter
Measuring or testing of receiver
455 677, 4551542, 4552262, H04B 1700
Patent
active
056132328
ABSTRACT:
A receiver apparatus includes a display apparatus for displaying signal strengths of signals of a plurality of reception frequencies. In the receiver apparatus, a receiver circuit of one system receives a high-frequency signal having a predetermined reception frequency, and a detection storage circuit detects and stores the signal strengths of the signals having a plurality of reception frequencies received by the receiver circuit by selectively switching over among the reception frequencies of the receiver circuit according to a predetermined order of the switching. The display apparatus has a plurality of display sections, and displays on the plurality of display sections the signal strengths of the signals having a plurality of reception frequencies stored in the detection storage circuit according to the order of the switching. Further, a demodulator circuit demodulates a high-frequency signal having at least one reception frequency received by the receiver circuit.
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"Thorough Technical Information, All About ICOM IC-780, by ICOM Corporation", HAM Journal No. 54, Mar. and Apr. 1988.
"Wide Band Receiver, CCR708A, Service Manual", Marantz Japan Inc. 1993.
Kuroda Toshihide
Nakagawa Kazuko
Nakayama Kazuyuki
Taki Tomotsugu
Toshida Youichi
Alinco Incorporated
Eisenzopf Reinhard J.
Vo Nguyen
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