Patent classifications
H
ELECTRICITY
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H04
ELECTRIC COMMUNICATION TECHNIQUE
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H04B
TRANSMISSION
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1/00
Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
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H04B1/005
adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges
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H04B1/0067
with one or more circuit blocks in common for different bands
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H04B1/0075
using different intermediate frequencied for the different bands
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H04B1/0078
with a common intermediate frequency amplifier for the different intermediate frequencies, e.g. when using switched intermediate frequency filters
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