Telecommunications – Receiver or analog modulated signal frequency converter – Cabinet – housing – or chassis structure
Patent
1995-06-07
1998-09-15
Urban, Edward F.
Telecommunications
Receiver or analog modulated signal frequency converter
Cabinet, housing, or chassis structure
455319, 455351, H04B 108
Patent
active
058094113
ABSTRACT:
A radio pager capable of changing the reception frequency thereof, as desired, and having a replaceable crystal oscillator. A reception frequency selecting device selects one of call signals having a plurality of predetermined frequencies which matches the crystal oscillator. A casing is formed with a first opening for allowing the crystal oscillator to be selectively attached to or detached from a printed circuit board, and a second opening for allowing the oscillator to be selectively inserted into or pulled out of the casing.
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Ishiguro Tetsumi
Kudoh Kazuhiro
NEC Corporation
Urban Edward F.
LandOfFree
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