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Icom IC-22S PLL Synthesized 2-Meter Transceiver 

Instruction Manual and Service Notes 

 

15

 

 

SECTION VII 
Charts

 

 

Diode Matrix Chart

 

 

Freq. 

"N" 

+Offset  

-Offset  

D7 

D6 

D5 

D4 

D3 

D2 

D1 

D0 

144.390 

144.990 

143.790 

144.405 

145.005 

143.805 

144.420 

145.020 

143.820 

144.435 

145.035 

143.835 

144.450 

145.050 

143.850 

144.465 

145.065 

143.865 

144.480 

145.080 

143.880 

144.495 

145.095 

143.895 

144.510 

145.110 

143.910 

144.525 

145.125 

143.925 

144.540 

10 

145.140 

143.940 

144.555 

11 

145.155 

143.955 

144.570 

12 

145.170 

143.970 

144.585 

13 

145.185 

143.985 

144.600 

14 

145.200 

144.000 

144.615 

15 

145.215 

144.015 

144.630 

16 

145.230 

144.030 

144.645 

17 

145.245 

144.045 

144.660 

18 

145.260 

144.060 

144.675 

19 

145.275 

144.075 

144.690 

20 

145.290 

144.090 

144.705 

21 

145.305 

144.105 

144.720 

22 

145.320 

144.120 

144.735 

23 

145.335 

144. 135 

144.750 

24 

145.350 

144.150 

144.765 

25 

145.365 

144.165 

144.780 

26 

145.380 

144.180 

144.795 

27 

145.395 

144.195 

144.810 

28 

145.410 

144.210 

144.825 

29 

145. 425 

144.225 

144.840 

30 

145.440 

144.240 

144.855 

31 

145.455 

144.255 

144.870 

32 

145.470 

144.270 

144.885 

33 

145.485 

144.285 

144.900 

34 

145.500 

144.300 

144.915 

35 

145.515 

144.315 

144.930 

36 

145.530 

144.330 

144.945 

37 

145.545 

144.345 

144.960 

38 

145.560 

144.360 

144.975 

39 

145.575 

144.375 

144.990 

40 

145.590 

144.390 

145.005 

41 

145.605 

144.405 

Summary of Contents for IC-22S

Page 1: ...Icom IC 22S PLL Synthesized 2 Meter Transceiver Instruction Manual and Service Notes...

Page 2: ...dance 50 ohms Number of Channels 23 channels selected from any of the 132 channels on 15 KHz spacing Frequency Control Stabilized master oscillator PLL programmed by diode matrix TRANSMITTER Power Out...

Page 3: ...ial frequency stability Twenty two 22 channels are provided for operating convenience and versatility High Q stages provide minimum interstage spurious response A low pass filter is placed at the outp...

Page 4: ...d to these deficiencies If an AC power supply other than the matching supply is used with your transceiver make certain it is adequately regulated for both voltage and current Low voltage while under...

Page 5: ...crophone A high quality dynamic microphone is supplied with your transceiver Merely plug it into the proper receptacle on the front panel Should you wish to use a different microphone make certain it...

Page 6: ...cathode pointing UP The cathode lead is bent down to go through the board to connect to the other side After the diodes have been inserted for the channel turn the board over carefully so as to not ha...

Page 7: ...e mode and relative RF output in transmit mode The meter face is illuminated with a white lamp when the transceiver is switched on Channel Selector Selects one of 22 channels C O S lamp Also shows out...

Page 8: ...ust the volume control to a comfortable listening level of noise if no signal is present Carefully adjust the squelch control clockwise until the noise just disappears This is the proper squelch thres...

Page 9: ...eedback circuit connects to ground serves for adjusting the operating point of Q26 and insuring symmetry of clipped waveforms Dl 8 and D19 are temperature compensating elements for the 3 stage DC circ...

Page 10: ...handled in this stage is particularly high use is make of an aluminum die cast radiator which is in direct contact with the rear chassis and serves to keep the transistor temperature low in order to i...

Page 11: ...red audio signals are adjusted to level by the volume control and amplified to I watt power by IC 2 Squelch At point J 5 higher frequency discriminator noise is taken at a selected level by the R1 squ...

Page 12: ...ince maximum operating frequency of ICI is low of 1C6 whose operating frequency is high divides the Q6 output frequency by 2 to give signals of approximately 3 MHz or less which are supplied to the pr...

Page 13: ...equal to VCC of Pin 5 when reference pulses and divider output have the same frequency When these inputs to 1C2 are not phase locked they have a width proportional to the phase difference of the inpu...

Page 14: ...F 2nd LO and noise amplification circuits The 9 V for transmit is similarly taken from emitter follower circuit Q32 from the clamp circuit constituted by Ri43 D22 D21 and is supplied to the IDC 10 7 M...

Page 15: ...0 0 0 0 144 645 17 145 245 144 045 0 0 0 1 0 0 0 1 144 660 18 145 260 144 060 0 0 0 1 0 0 1 0 144 675 19 145 275 144 075 0 0 0 1 0 0 1 1 144 690 20 145 290 144 090 0 0 0 1 0 1 0 0 144 705 21 145 305...

Page 16: ...0 0 1 1 1 1 0 1 145 320 62 145 920 144 720 0 0 1 1 1 1 1 0 145 335 63 145 935 144 735 0 0 1 1 1 1 1 1 145 335 63 145 935 144 735 0 0 1 1 1 1 1 1 145 350 64 145 950 144 750 0 1 0 0 0 0 0 0 145 365 65 1...

Page 17: ...0 1 0 145 995 107 146 595 145 395 0 1 1 0 1 0 1 1 146 010 108 146 610 145 410 0 1 1 0 1 1 0 0 146 025 109 146 625 145 425 0 1 1 0 1 1 0 1 146 040 110 146 640 145 440 0 1 1 0 1 1 1 0 146 055 111 146 65...

Page 18: ...0 1 1 0 0 1 146 700 154 147 300 146 100 1 0 0 1 1 0 1 0 146 715 155 147 315 146 115 1 0 0 1 1 0 1 1 146 730 156 147 330 146 130 1 0 0 1 1 1 0 0 146 745 157 147 345 146 145 1 0 0 1 1 1 0 1 146 760 158...

Page 19: ...0 0 0 1 1 0 147 375 199 147 975 146 775 1 1 0 0 0 1 1 1 147 390 200 147 990 146 790 1 1 0 0 1 0 0 0 147 405 201 148 005 146 805 1 1 0 0 1 0 0 1 147 420 202 148 020 146 820 1 1 0 0 1 0 1 0 147 435 203...

Page 20: ...1 0 1 1 0 0 147 945 237 148 545 147 345 1 1 1 0 1 1 0 1 147 960 238 148 560 147 360 1 1 1 0 1 1 1 0 147 975 239 148 575 147 375 1 1 1 0 1 1 1 1 147 990 240 148 590 147 390 1 1 1 1 0 0 0 0 148 005 241...

Page 21: ...Q11 0 05V 13 80V E 0 75V 0 35V E Squelch Closed Q12 0 65V 0 75V E 0 8 0V E Q13 1 35V 5 8V 0 8V Q14 1 35V 9 4V 0 75V Q15 0 26V 12 9V 0 90V 0 13 5V 0 7V Q16 12 9V 6 60V 13 70V 13 5V 13 8V 13 8V Q17 0 1...

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