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JOHNNY III ASC HARRY III ASC SERVICE MANUAL...
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-TECNNICAL CHARACTERITICS JOHNNY III ASC ( config: E EU PL ) HARRY III ASC ( config: E d EU EC U PL ) 1-GENERAL: -Multiconfiguration(E,d,EU,EC,U,PL) -E ⇒ 40 channels AM/FM 4W (from 26,965Mhz to 27,405Mhz) -d ⇒ 80 channels FM 4W (from 26,565Mhz to 27,405Mhz) 40 channels AM 1W (from 26,965Mhz to 27,405Mhz) -EU ⇒...
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3-RECEPTION: -Maximum sensitivity at 20dB sinad -0,5µV(-113dBm) AM/FM -Audio frequency response -From 300Hz to 3kHz in AM/FM -Adjacent channel selectivity -Superior to 60dB -Frequency image rejection -Superior to 60dB -Intermodulation response -Superior to 54dB -Maximum audio power -Squelch sensitivity -Threshold 0,2µV(-120dBm)/Tight 1mV(-47dBm) -Current drain -300mA nominal/750mA maximum...
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ALIGNMENT TRANSMITTER 1 - Alignment procedure(13,2V;configuration”EU,E”) STEP CONDITION ADJUSTMENT REMARKS OF ADJUSTMENT FM/AM(E)TX RT201 Connect a wattmeter to jack antenna, Channel 20 adjust RT201 to reach 5V±0,2V on the DC voltmeter connected to TP104. AM(EU)TX RT203 Connect a wattmeter to jack antenna, Channel 20 adjust RT203 to reach 1W on the wattmeter.
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ALIGNMENT RECEIVER 1 - Alignment procedure(13,2V;configuration”EU,E”) STEP CONDITION ADJUSTMENT REMARKS OF ADJUSTMENT AM(EU,E) L1-L2-L3 Connect HF generator to jack antenna Channel 20 L4-L6-L7 adjusted at ( –107dBm 1KHz 60%), Middle volume connect sinad meter to jack EXT speaker level. and adjust coils for maximum sensitivity( ≥...
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