FT-227RA_user操作说明书手册

毫2至y游AN ANDREASSE时28.KORSGARDSVEIDK-2920 CHARLOTTENLUNDD E NMAR KYAESU MODEL FT-227RAThe FT-227RA is an adaptation of the FT-227R which provides expanded memory capability as well as scanningcapability.The scanner will search for a busy or clear channel,as desired,or will scan indefinitely until halted bya press of the microphone PTT switch.The following changes in the FT-227R Instruction Manual should be observed.Apart from these changes,operationis identical to that of the FT-227R.1.All references to "FT-227R"should read "FT-227RA".2.The microphone supplied with the FT-227RA contains up/down scanner controls.The microphone plug and jackin the FT-227RA contain 6 pins,compared to 4 pins for the FT-227R.3.The FT-227RA FUNCTION switch has memory positions M1,M2,M3,and M4,as shown.Also on the FUNCTIONswitch are600kHz repeater positions.4.The bottom of the cabinet contains the HI/LOW RF output switch,as well as the BUSY-MAN-CLEAR scanningselect switch.5.Page 18,"PLL CONTROL SECTION",should have its first paragraph modified to read:"The optical couplingsystem utilizes two photo-interruptors Q2 and Q3 (both ON-1105)to generate two signal outputs which areamplified by Q4 and Q5 (both 2SC1815Y)and applied to the PLL control unit.6.The FT-227RA block diagram,schematic diagram,and parts list should be referred to for correct information.FT-227RA OPERATIONFor scanner operation,proceed as follows.Place the BUSY-MAN-CLEAR switch in the MAN position,and the MRswitch should be OFF.Pressing the UP button for an instant will cause a shift of 10kHz upwards.Holding the UPbutton down for more than second will initiate scanning higher in frequency.Press the UP button once again to haltthe scan at the desired frequency.Pressing the DN switch in the same manner will cause scanning toward a lower frequency.Placing the scanning select switch in the BUSY position will cause the scan to be halted whenever the squelch is trippedby a signal on the frequency being scanned.Placing the switch in the CLEAR position will cause the scan to be haltedwhen the receiver is muted (no signal present).When the optional tone squelch is used,the scan will be halted accordingto the condition of the main squelch,not the tone squelch.For memory operation,proceed as follows.Memory channels M1-M3 are for simplex operation only.With the MRswitch OFF,dial in the desired frequency,press M,and then the frequency will be stored in the channel selected by theFUNCTION switch.For instant return to the simplex frequency,press MR.Memory channel M4 can be used for repeater operation.Store the repeater UPLINK (input)frequency in channel M4,then rotate the dial to the repeater downlink frequency.With the MR switch OFF,you will now be transmitting onthe memorized frequency,and receiving on the dial frequency.Pressing the MR button puts you on the miemorizedfrequency for both transmit and receive.The +600kHz positions of the FUNCTION switch are used only for securing repeater offset on the dial frequencies.Fo