32-bit数字处理技术! Icom已经把数字处理技术应用在了IC-756PROII，开创了无线通讯领域的心范畴。IC-746PRO融合了32-bit数字处理技术能够更加灵活的增强信号，同时降低干扰，提供了更高的信噪比。DigitalTwinPBT手动阶式滤波器数字降噪AGC循环管理麦克风均衡器数字RF语音压缩.HF+50MHz+144MHz全波段覆盖持续的100W功率输出全模式数字调制解调IF滤波器多功能大屏幕LCD.可显示如下：频道名字功能键波段RTTY解码屏幕记忆调制器内容图形SWRRTTY解调器编码器大量的CW功能记忆调制器内建天线调谐器SSB/CW同步调谐音频抑制控制(VSC) 附加特性 三倍波段堆栈寄存器2种前置放大器20dBRF天线可调噪音抑制(101级)500Hz以下SSB模式的BPF功能1/4速度拨号功能(SSB-data,CW和RTTY模式)108个可选的DTCS和50个可选的CTCSS编码/解码器1750Hz音频编码选配高稳定性晶体单元,CR-33810个备忘录快速分裂功能 9.99kHzRIT和ITX计算机控制CI-VVOX可编程,记忆,选择记忆和IF扫描IF发射音频监视102个记忆频道9600bps数据终端AH-4控制电路自动TS功能选配声音合成单元1Hz调谐和指示 技术指标 一般指标频率范围:Rx 0.030-60.000MHz* 108.000-174.000MHz* Tx 1.800- 1.999MHz* 3.500- 3.999MHz* 7.000- 7.300MHz* 10.100-10.150MHz* 14.000-14.350MHz* 18.068-18.168MHz* 21.000-21.450MHz* 24.890-24.990MHz* 28.000-29.700MHz* 50.000-54.000MHz*144.000-148.000MHz**Somefreq.bandsarenotguaranteed.模式:USB,LSB,CW,RTTY,AM,FM频道数目:102(99regular,2scanedgesand1call)天线:SO-239 3(2forHF/50MHzand1for144MHzbands;50?)工作温度:-10℃to+60℃频率稳定性:Lessthan?ppmfrom1min.to60min.afterpowerON.Afterthat,rateofstabilitychangeislessthan 1ppmat25℃.Temperaturefluctuations(0℃to+50℃)lessthan1ppm.Frequencyresolution:1Hz电源:13.8VDC 15%(negativeground)电流消耗:Tx Rx Max.power Standby Max.audio 23A 2.2A 3.0A 尺寸 (不含天线):287(W) 120(H) 316.5(D)mm; 重量(大约):9.0kg;ACC1接口:8-pinDINconnectorACC2接口:7-pinDINconnectorCI-V接口:2-conductor3.5(d)mm(1/8 )数据接口:MiniDIN6-pin 发射指标输出功率 (continuouslyadjustable):SSB,CW,RTTY, AM FM5-100W 5-40W调制系统:SSB PSNmodulation AM Lowpowermodulation FM Phasemodulation乱真发射:50dB(HFbands) 60dB(50/144MHzbands)载波抑制:Morethan40dB无用边带抑制:Morethan55dBITXvariablerange: 9.999kHz麦克风:8-pinconnector(600?)ELE-KEY接口:3-conductor6.35(d)mm(1/4 )KEY接口:3-conductor6.35(d)mm(1/4 )SEND接口:Phono(RCA)ALC接口:Phono(RCA) 接收指标接收系统:3次转换超外差中频:1st64.455MHz(forallmodes) 2nd455kHz(forallmodes) 3rd36kHz(forallmodes)灵敏度(typical): FrequencyRange(MHz)SSB,CW,RTTY(at2.4kHzBW)AM(at6kHzBW)FM(at15kHzBW)0.50-1.799__13uV__1.80-27.990.16uV*12uV*1__28.0-29.990.16uV*12uV*10.5uV*150.0-54.00.13uV*21uV0.25uV*2144.0-148.00.1uV*31uV*30.1uV*310dBS/NforSSB,CW,RTTYandAM,12dBSINADforFM*1Pre-amp1isON, *2Pre-amp2isON, *3Pre-ampisON静噪灵敏度 (Pre-amp:OFF):SSB,CW,RTTY FM Lessthan5.6uV Lessthan1uV选择度 (representativevalue):SSB(BW:2.4kHz) CW(BW:500Hz) RTTY(BW:350Hz) AM(BW:6kHz) FM(BW:15kHz) Morethan2.4kHz/-6dB Lessthan3.2kHz/-40dB Lessthan3.6kHz/-60dB Lessthan4.3kHz/-80dB Morethan500Hz/-6dB Lessthan700Hz/-60dB Morethan360Hz/-6dB Lessthan650Hz/-60dB Morethan6.0kHz/-6dB Lessthan15.0kHz/-60dB Morethan12.0kHz/-6dB Lessthan20.0kHz/-60dB伪波和景象抑制比:Morethan70dB (HF,50MHzbands) Morethan60dB(144MHz) (exceptIFthroughon50MHzband)音量输出功率 (at13.8VDC):Morethan2.0Wat10%distortionwithan8?loadRITvariablerange:?.999kHzPHONE接口:3-pinconnector6.35(d)mm(1/4 )外接扬声器:2-pinconnector3.5(d)mm(1/4 )/8? 天线调谐器阻抗范围:16.7-150?unbalanced*1(HFbands) 20-125?unbalanced*2(50MHzband) *1LessthanVSWR3:1; *2LessthanVSWR2.5:1最小输入功率:8W(HFbands),15W(50MHzband)调谐准确性:VSWR1.5:1orless插入损失:Lessthan1.0dB(aftertuning) 附件:麦克风直流电源线备用保险丝CWkeyplug