Icom IC-R20 Service Manual

Also see for IC-R20: Price list Instruction manual Instruction manual Service manual

Contents

Icom IC-R20 Service Manual Manual pdf 4 page image

1 - 1SECTION 1 SPECIFICATIONS• IC-R20M GENERAL• Frequency coverage :• Mode : FM, WFM, AM, SSB, CW• No. of memory channel : 1250 channel(incl. scan edge and automemory write ch.)• Frequency stability : ±6 ppm max.• Tuning steps : 0.01, 0.1, 1, 5, 6.25, 8.33*,9*, 10, 12.5, 15, 20, 25,30, 50 and 100 kHz*selectable depending onthe operating frequencyband.• Antenna Impedance : 50 Ω• Power supply requirement : 3 × AA(R6) alkaline cells,BP-206 or external powersupply (BC-149/A/D, CP-18)• Polarity : Negative ground• Current drain (at 3.7 V, backlight is OFF) :Rated audio 150 mA typicalStandby 100 mA typicalPower saved 35 mA typical(Power save ratio is 1 : 4)• Usable temperature range : –10˚C to +60˚C( –14˚F to +140˚F)• Dimensions : 60(W) × 142(H) × 34.8(D) mm;(projections not included) 23⁄8 (W) × 519⁄32 (H) × 13⁄8(D) in• Weight (with antenna and BP-206) : Approx. 320 (g); 1119⁄32 (oz)• External SP connector : 3-conductor 3.5(d) mm(1⁄8”) / 8Ω• Audio output power (at 3.7 V) : 100 mW typical at 10 %distortion with an 8 Ω load• BP-206 charging time : Approx. 8 hours• Charging current : 400 mA typicalM RECEIVER• Receiver system : Triple super heterodyneand down convertor• Intermediate frequency : 1st 266.7 and 429.1 MHz2nd 19.65 MHz3rd 450 kHz• Sensitivity* :Single mode receiving; Except spurious point (Unit; μV)*FM and WFM is measured at 12 dB SINAD. AM, SSB andCW are measured at 10 dB S/N.• Squelch Sensitivity : (except spurious points)• Selectivity :SSB/CW More than 1.8 kHz / –6 dBAM / FM More than 12 kHz / –6 dBLess than 30 kHz / –60 dBWFM More than 150 kHz / –6 dBAll stated specifications are subject to change without notice or obligation.Version[EUR], [UK],[SEA], [CAN][EXP-01], [EXP-02][USA][FRA]Receive coverage (MHz)0.150–3304.9990.150–821.999, 851.000–866.999,896.000–1304.999, 1305.000–3304.9990.150–29.999, 50.200–51.200,87.500–108.000, 144.000–146.000430.000–440.000, 1240.000–1300.000Frequency (MHz)0.495 – 1.6191.620 – 4.9995.000 – 29.99930.000 – 49.99950.000 – 53.99954.000 – 75.99976.000 – 108.000108.001 – 117.999118.000 – 135.999136.000 – 146.999147.000 – 174.999175.000 – 221.999330.000 – 469.999470.000 – 769.999770.000 – 832.999833.00 – 1304.9991330.000 – 2304.9992330.000 – 2999.999FM—0.560.40.560.715.618WFM—1.8—1.8—2.5—AM2.21.4—1.4—SSB/CW0.40.25—0.25—0.25—0.32—Frequency (MHz)0.495 – 1.6191.620 – 4.9995.000 – 29.99930.000 – 75.99976.000 – 108.000108.001 – 117.999118.000 – 135.999136.000 – 174.999175.000 – 221.999330.000 – 469.999470.000 – 769.999770.000 – 832.999833.000 – 1304.9991330.000 – 2304.9992333.000 – 2999.999FM—0.56 μV0.4 μV0.56 μV0.71 μV5.6 μV18 μVWFM—18 μV—18 μV—18 μV—AM2.2 μV1.4 μV—1.4 μV—