Page 1: ...Please read before using this equipment OWNERS MANUAL PATROLMAN PRO 3A VHF UHF 3 BAND MONITOR RECEIVER PROFESSIONAL SERIES Catalog No 20 452...
Page 2: ...o c1ear reason for the failure first check the supply switch This switch entirely disconnects the supply components that are not in use Also before connecting the PRO 3A receiver to a DC power supply...
Page 3: ...quiet hiss fram the speaker The next step is to tune the band for a signal Several passes may be necessary since stations in the communications bands transmit only when they have a message and do not...
Page 4: ...p and radials should be cut as follows During installation all four radials are cut to 20 1 4 152 174 MHz or 6 1 2 450 470 MHz They are removed from the assembly the four end balts pulled off and each...
Page 5: ...e control F Squelch eliminates no signaI noise G Selectivity switch chooses broad or sharp characteristic H Band switch I Low impedance audio Jack for phones or external speaker J Audio filter improve...
Page 6: ...actors to consider when mounting any piece of equipment in an automobile Be sure that the Receiver controls may be easily reached by the operator Also be sure that connecting cables do not interfere w...
Page 7: ...PHONE JACK J2 VOLUME UHF SOUELCH AF UHF BUFFE R NOISE AMP DC AMP Hl CUT ANTEN NA CONVERTER SWITCHING AMP AND FILTER AUDIO AMP AMP DETECTOR JACK 450 470 MHz 023 24 013 24 D4 5 015 16 17 AF FILTER 020 2...
Page 8: ...De iS RGG 330 Q23 24 2SC 394 UHF CO NVERTE R 4 47QMHzJ IF Q7 08 09 0 I VHF LOW UHF VHF HIGHBAND SWITCH SELEcrtVITY SW TCH 5KHz 15KHz AF FILTER SWITCH I N OUT PCNlER ON OFF SWITCH SQUELCH CONTROL VOLUM...
Page 9: ...Schematic of VHF LO front end 30 50 MHz Schematic of VHF Hl front end 152 174 MHz Schematic of UH F converter 450 470 MHz ANT L2 CTl L3 CT2 8 L5 C 3 KlJ eI9 I LG...
