Kenwood NX-420 K Service Manual

Contents

NX-42079SPECIFICATIONSGENERALModels ........................................................K : Basic ModelK3 : Full Key w/LCD ModelFrequency Range .......................................TX : 806~825MHz, 851~870MHz RX : 851~870MHzNumber of Channels...................................K3 : 260 K : 64Zones..........................................................K3 : 128 K : 4Max. Channels per Zone ............................K3 : 250 K : 16Channel Spacing ........................................Analog : 12.5/25kHz Digital : 6.25/12.5kHzOperating Voltage .......................................7.5V DC ±20%Battery Life (5-5-90)with KNB-55L..........................................Approx. 8.5 hourswith KNB-56N .........................................Approx. 8.5 hourswith KNB-57L..........................................Approx. 11.5 hoursOperating Temperature Range ...................–22°F to +140°F (–30°C to +60°C)Frequency Stability .....................................±1.0ppmAntenna Impedance ...................................50Dimensions (W x H x D) (Projections not included)KRadio only ...........................................2.20 x 4.35 x 1.48 in (56 x 110.5 x 37.5 mm)with KNB-55L ......................................2.20 x 4.35 x 1.50 in (56 x 110.5 x 38.1 mm)with KNB-56N .....................................2.20 x 4.35 x 1.72 in (56 x 110.5 x 43.8 mm)with KNB-57L ......................................2.20 x 4.35 x 1.58 in (56 x 110.5 x 40.1 mm)K3Radio only ...........................................2.20 x 4.35 x 1.45 in (56 x 110.5 x 36.9 mm)with KNB-55L ......................................2.20 x 4.35 x 1.48 in (56 x 110.5 x 37.5 mm)with KNB-56N .....................................2.20 x 4.35 x 1.70 in (56 x 110.5 x 43.2 mm)with KNB-57L ......................................2.20 x 4.35 x 1.56 in (56 x 110.5 x 39.5 mm)Weight (net)Radio only...............................................K : 7.2 oz (205g) K3 : 7.4 oz (210g)with KNB-55L..........................................K : 10.6 oz (300g) K3 : 10.8 oz (305g)with KNB-56N .........................................K : 14.1 oz (400g) K3 : 14.3 oz (405g)with KNB-57L..........................................K : 11.5 oz (325g) K3 : 11.6 oz (330g)RECEIVERSensitivity ...................................................Digital @6.25kHz (3% BER) : 0.20μVDigital @12.5kHz (3% BER) : 0.25μVAnalog (12dB SINAD) : 0.25μVSelectivity ...................................................Analog @25kHz : 72dB Analog @12.5kHz : 65dBIntermodulation Distortion ..........................Analog : 70dBSpurious Response ....................................Analog : 70dBAudio Distortion ..........................................Less than 3%Audio Output ...............................................500mW/8TRANSMITTERRF Power Output ........................................3W/1WSpurious Response ....................................70dBFM Hum and Noise.....................................Analog @25kHz : 45dB Analog @12.5kHz : 40dBAudio Distortion ..........................................Less than 3%Modulation ..................................................16K0F3E, 11K0F3E, 8K30F1E, 8K30F1D, 8K30F7W,4K00F1E, 4K00F1D, 4K00F7W, 4K00F2DAnalog measurements made per TIA/EIA 603 and specifi cations shown are typical.Kenwood reserves the right to change specifi cations without prior notice or obligation.