KDK_AKD-2001_参考电器原理图

SCHEMATHEEKBeh.T.HultermansAKD 2 Metre TRANSCEIVERPostbus 42285604 EE EindhovenACCESSORIESMODEL 2001 SPECIFICATIONSGENERAL:MODULATIONPACKET RADIOFMFREQ RANGE144.5-146MHzSUPPLY VOLTAGE13.8V±10%Proms are available to allow the transceiver to power up on a PACKETCHANNEL SPACING12.5Hzchannel.The advantage is that in a power down situation the unit,on powerSPEAKER80 INTERNALup will nol be transmitting on the calling channel.OP'TING TEMP RANGE-10°lo450PcFREQ STABILITY±1.5KHzThese proms may be ordered by quoting either the channel required or theTX-RX VOLTAGE CHANGEOVERfrequency.Relay OperatedTRANSMITTER:The proms are easily installed by removing the top cover of the transceiverand unplugging the existing prom and plugging in the replacement into theRF OUTPUT POWER25 WATTS Highsocket.It is advisable to note the orientation of the original prom and to makeRF OUTPUT POWER5 WATTS Lowsure the pins are not deformed prior to installation.SUPPLY CURRENT4 AMPS High PowerSUPPLY CURRENT2AMPS(Low Power】WARRANTY WILL NOT BE VOID UPON INSTALLATION OF PROMS BYTHE USERHARMONIC CONTENT<1wAUDIO DISTORTIONLess than 3%AUDIO RESPONSEEdb/octave pre-emphasisPOWER SUPPLY NOT OF AKD MANUFACTUREover range 300Hz to 3KHzDEVIATION±4KHzA Bench Top type power supply.capable of powering the transceiver isavailable from AKD.RECEIVER:SENSITIVITYBetter than 0.3j/Vfor 12 db SINADADJ CHANNEL SENSITIVITY60 dbBLOCKING90 dbIMAGE RESPONSE70 dbAUDIO RESPONSE6db octave de-emphasisover range 300Hz to 3KHzAUDIO OUTPUT2 WATTSREPEATER OPERATION:TONE BURST GENERATOR0.5 sec of 175042Hz TONESEMI DUPLEX OP ON CH0007SHIFT CAN BE CANCELLED FOR"LISTEN ON INPUT"CONNECTIONS:ANTENNASO 239 SOCKET on rearSUPPLYIn line fused 5 AMPPTT MICSocket on front paneiAKD Reserve the right to alter specification without noticeEXT SPEAKER not suppliedSocket on front panelE&OE