IC-718_broch.pdf
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1、HF ALL BAND TRANSCEIVER Front mounted loud speaker The IC-718 has a speaker mounted on the front panel. With the speaker facing the operator, audio sounds can be clearly heard without impediment during opera- tion. It is no longer necessary to manually increase the volume to try and capture audio so
2、unds. Superior basic performance The IC-718 has 0.0329.999999 MHz* general coverage receive capability. A 4- element system is employed for the 1st receive mixer, providing superior receive IMD, especially from in-band near-by in- terfering signals. A well-designed double- conversion system to help
3、minimize image and spurious responses for better signal fi delity, is also built-in. A newly de- signed PLL circuit has been adopted to improve C/N ratio characteristics. The combination of the 4-element system mixer and new PLL circuit allows superior basic performance as that of a commer- cial gra
4、de transceiver. *Guaranteed range: 0.529.999999 MHz Optional DSP capability With the optional UT-106* installed you gain AF DSP capabilities. The DSP includes the following to give you superior receive quality in your shack. * Already installed with some versions. Noise reduction: Pulls desired AF s
5、ignals from noise. Out- standing S/N ratio is achieved, providing clean audio in SSB and AM. Automatic Notch fi lter: This automatically minimizes beat signals and heterodynes while preserving the re- ceive signal. Also, the notch frequency is automatically adjusted to follow interfering beat signal
6、s for example, reducing in- terference from RTTY signals during SSB operation. Interference rejection IF shift To reject interference, the IC-718 has an IF shift function which shifts the center fre- quency of the IF passband electronically to reduce adjacent interference. Microphone compressor The
7、IC-718 has a low distrotion micro- phone compressor. This feature com- presses microphone audio input to increase average audio output level. The result is, that talk power is increased. This function is effective for long distance com- munication, or when propagation condi- tions are poor. RF gain
8、control RF gain control is combined with the squelch control. The RF gain adjusts min- imum response receiver gain, and ignores signals weaker than the pre-set level providing pleasant stand-by, or scanning. Ample CW features An electronic keyer with a variable dot/dash ratio (2.8:1 to 4.5:1)control
9、 is built-in. By simply connecting a paddle, easy CW operation can be made. The CW pitch and the key speed are also vari- able from 300900 Hz, 660 wpm, re- spectively. Of course, full break-in capability is available with the adjustable break-in delay. VOX operation A VOX (voice operated transmissio
10、n)is in- cluded with the IC-718. It provides hands- free operation by detecting audio signals from the microphone. Its easy! Noise reduction OFF Comparison of receive signal speaker output Noise reduction ON The HF bands allow you to c tances covering many km ev world. With the superior perfo such a
11、s wide dynamic range, operation you will fi nd making rience the combination of the nology, along with the size a will see the IC-718 will be th ever own. Flexible fi lter selection An optional IF filter can be installed into the transceiver to suit your operating pref- erence. High frequency stabil
12、ity When the optional CR-338 HIGH STABILITY CRYSTAL UNITis in- stalled, you get a very high frequency stability of 0.5 ppm. Selectable antenna tuner Either the AT-180 or AH-4 optional an- tenna tuner can be used with the IC-718 to suit your installing conditions, or oper- ating style. Of course, the
13、 AH-4 control circuit is built into the IC-718. Simple operation The IC-718 is equipped with a minimum number of switches and controls for supe- rior feature selectability. The 10-key pad on the front panel to directly enter an op- erating frequency, or a memory channel number. The auto tuning steps
14、 function helps quick tuning activates when turning the dial quickly. And the band stacking register is very convenient when changing operating bands. Digital S/RF meter Built-in multi functional digital S/RF meter indicates signal strength level while re- ceiving, and either transmit output power,
15、ALC level or VSWR ratio while transmit- ting. Optional voice synthesizer A clear, electronically-generated voice an- nounces operating frequency, mode and receiving signal strength level when the optional voice synthesizer unit, UT-102, is installed. Other features USB, LSB, CW, RTTY(FSK)and AM mode
16、s are built-in Level adjustable noise blanker RF attenuator and Pre-amplifi er Variety of scanning function types Total 101 memory channels are available Hand microphone is supplied, and more. communicate over long dis- even to the other side of the ormance found in the IC-718 , high C/N ratio, and
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