Icom IC-R20 Service Manual - Page 4

SECTION 1 SPECIFICATIONS • IC-R20 M GENERAL • Frequency coverage : Version [EUR], [UK], [SEA], [CAN] [EXP-01], [EXP-02] Receive coverage (MHz) 0.150-3304.999 [USA] 0.150-821.999, 851.000-866.999, 896.000-1304.999, 1305.000-3304.999 [FRA] 0.150-29.999, 50.200-51.200, 87.500-108.000, 144.000-146.000 430.000-440.000, 1240.000-1300.000 • Mode : FM, WFM, AM, SSB, CW • No. of memory channel : 1250 channel (incl. scan edge and auto memory 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 on the operating frequency band. • Antenna Impedance : 50 Ω • Power supply requirement : 3 × AA(R6) alkaline cells, BP-206 or external power supply (BC-149/A/D, CP-18) • Polarity : Negative ground • Current drain (at 3.7 V, backlight is OFF) : Rated audio 150 mA typical Standby 100 mA typical Power saved 35 mA typical (Power save ratio is 1 : 4) • Usable temperature range • Dimensions (projections not included) : -10˚C to +60˚C ( -14˚F to +140˚F) : 60(W) × 142(H) × 34.8(D) mm; 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 typical M RECEIVER • Receiver system : Triple super heterodyne and down convertor • Intermediate frequency : 1st 266.7 and 429.1 MHz 2nd 19.65 MHz 3rd 450 kHz • Sensitivity* : Single mode receiving; Except spurious point (Unit; µV) Frequency (MHz) FM WFM AM SSB/CW 0.495 - 1.619 - 1.620 - 4.999 0.56 2.2 0.4 5.000 - 29.999 30.000 - 49.999 - 1.4 0.25 - 50.000 - 53.999 0.25 54.000 - 75.999 - 76.000 - 108.000 0.4 1.8 - 108.001 - 117.999 118.000 - 135.999 136.000 - 146.999 1.4 - 0.25 147.000 - 174.999 - 175.000 - 221.999 1.8 330.000 - 469.999 - 0.32 470.000 - 769.999 0.56 2.5 - 770.000 - 832.999 833.00 - 1304.999 0.71 - - 1330.000 - 2304.999 5.6 2330.000 - 2999.999 18 *FM and WFM is measured at 12 dB SINAD. AM, SSB and CW are measured at 10 dB S/N. • Squelch Sensitivity Frequency (MHz) 0.495 - 1.619 1.620 - 4.999 5.000 - 29.999 30.000 - 75.999 76.000 - 108.000 108.001 - 117.999 118.000 - 135.999 136.000 - 174.999 175.000 - 221.999 330.000 - 469.999 470.000 - 769.999 770.000 - 832.999 833.000 - 1304.999 1330.000 - 2304.999 2333.000 - 2999.999 : (except spurious points) FM - 0.56 µV WFM - AM 2.2 µV 1.4 µV 0.4 µV 18 µV - - 1.4 µV 18 µV - 0.56 µV 18 µV - 0.71 µV 5.6 µV - 18 µV • Selectivity All stated specifications are subject to change without notice or obligation. SSB/CW AM / FM WFM : More than 1.8 kHz / -6 dB More than 12 kHz / -6 dB Less than 30 kHz / -60 dB More than 150 kHz / -6 dB 1 - 1