22 lines
896 B
Plaintext
22 lines
896 B
Plaintext
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AST RESEARCH TECHNICAL BULLETIN TB-0170 4-25-86
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REACH! MODEM INTERFERENCE
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Some REACH! modem users have experienced interference problems
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when dailing numbers with the REACH! modem.
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These customers receive broadcasts of AM radio stations through
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the REACH! speaker as the modem is dialing a telephone number.
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They are located within a few miles of the interfering stations
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transmitter tower. This close proximity to the transmitter is
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causing the audio circuits of the REACH! modem to be overdriven,
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which demodulates the RF signal, which then plays it through
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REACH!'s speaker.
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To remove the interference, it is necessary to acquire a rapid
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interference filter such as is sold by AT&T in their phone
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centers. The part number for AT&T's filter is #Z100A.
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