tr7500_使用说明书手册(eu)

TR-7500 SPECIFICATIONSGENERALSemiconductor...Transistors44FETsICs2Diodes36fr0qu0 ncy Range.··-4.·····-145.000 MHz to145.975MHzFrequency Synthesizer,++·+·t·Digital control of phase locked VCOSynthesizer Stability,,,,,,,t,,,··,,。Lss.than±750Hzat25CFMNo.of Channel◆。440.4””卡9+40 channel (25 kHz interval)Built-in channels.....................40f145.000-145.975MH2at25kH2LStepOperating Temperature+..es:ts+t··-20to460°CPower Voltage，下，，，，，，一中+4+11.5 VDC to 16.0 VDC(13.8 VDC as reference)Grounding4年4440044040年0g0t40Negative groundingAntenna Impedance,,,,,,.,,,,,··-+-501DC CurrentLess than 0.5A in receive with no input signalLess than 3.0A in transmit (HI)Less than 1.5A in transmit (LOW)《at13.8VDclDim8nsi0ns。。+·152mmwidth60 mmhigh234mmdeepWeightApprox.2.2 kgTRANSMIT SECTIONRF Output Pow0r,,,,·,··+·High10 watts(min.]Low approx.1 watt (adjustable up to 5 watts)Modulation.··4Variable reactance direct shiftMax.Frequ0 ncy Deviation。.,····,++±5kHzSpurious Radiation.-,+.++···tLess than-60 dBRepeater Tone Frequency1750HzMicrophone,.。,,。。,,,,,,,,,,:,,,,,Dynamic microphone with PTT switch,50011RECEIVE SECTIONCircuitry-··Double superheterodyneIntermediate Frequency,.。,,,..,:,.。.1st IF 10.7 MHz2nd IF455 kHzSensitivity ,.....................Less than 0.4 uV for 20 dB quieting(Less than 1 uV for 30 dB S/N)Squelch Sensitivity4。++，。444”4.444Less than 0.25 uVPass Band Width··More than 12 kHz at 6 dB downSelectivity (2 Signal)卡4▣年9599卡。”中”More than 70 dB at 25 kHz of adjacent channelImage Rej0 ction,。,..:。e··。·-·.-44More than 70 dBSpurious Interference,·,,,··,.+:.:,:More than 60 dBIntermodulation,,,,,,,,,,。,,。,,,,More than 66 dBAudio Output,,···aMore than 1.5 watts across 8 load (10%distortion)Note:The circuit and ratings may change without notice due to development in technology.