Kenwood TKR-750 Service Manual

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TKR-75087SPECIFICATIONS (K,K2 TYPE)GENERALFrequency Range ................................ K : 146 to 174MHz K2 : 136 to 150MHZNumber of Channels ........................... 16 channelChannel Spacing ................................. Wide : 30kHz, 25kHz Narrow : 15kHz, 12.5kHz(PLL channel stepping 2.5kHz/5kHz/6.25kHz)Operating Voltage ............................... 13.6V DC± 15% (10.8~15.6V)Current DrainStandby .......................................... 0.8AStandby w/power save .................. 0.3A (Operating mode DC-IN : Backup, FAN : Temp, SAVE : ON, DISP : OFF)Receive .......................................... 1.2ATransmit/Receive ........................... Less than 13ADuty CycleReceive .......................................... 100%Transmit ......................................... 100% (100% @25W)Frequency Stability ............................. Less than ± 0.0002% –30°C to +60°C (–22°F to +140°F)Antenna Impedance ........................... 50ΩOperating Temperature Range ........... –30°C to +60°C (–22°F to +140°F)Dimensions ......................................... 483 (19) W x 88 (3-1/2) H x 340 (13-1/3) D mm (inch)Weight ................................................ 9.7kg (21.4 lbs.)RECEIVER (Measured by TIA/EIA-603)Sensitivity12dB SINAD ................................... 0.35μV (–116dBm)20dB Quieting ................................ 0.45μV (–114dBm)Selectivity ........................................... Wide : 85dB (± 30kHz/± 25kHz) Narrow : 80dB (15kHz), 77dB (12.5kHz)Intermodulation ................................... Wide : 80dB (± 30kHz/± 60kHz) Narrow : 75dB (± 15kHz/± 30kHz)Hum and Noise ................................... Wide : 50dB Narrow : 45dBSpurious & Image Rejection ............... 90dBAudio Output (Ext. Speaker) ............... 4W at 4Ω less than 5% distortionAudio Distortion (Ext. Speaker) .......... Less than 2.5% at 1000HzBand Spread ....................................... 3MHzTRANSMITTER (Measured by TIA/EIA-603)RF Power Output ................................ 50W adjustable to 15W (100% duty @25W)Type of Emission ................................ Wide : 16K0F3E Narrow : 11K0F3ESpurious Response ............................. 80dBFM Hum and Noise ............................ Wide : 50dB Narrow : 45dBAudio Distortion .................................. Less than 3% at 1000HzMicrophone Impedance ...................... 600ΩBand Spread ....................................... K : 28MHz K2 : 14MHz

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