CAT System Computer Control
Opcode Command Chart (3)
| Command | Parameter Bytes | Opcode |
| Parameter Description |
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| or Key | 1st | 2rd | 3rd | 4th | 5th |
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| TUNER | – | – | – | T | 81H | Switch Antenna Tuner ON (T = 01H) or OFF (T = 00H) |
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| Tuner Start | – | – | – | – | 82H | Start Antenna Tuning |
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| Dual Operation | – | – | – | D | 83H | Switch Dual Receive ON (D = 01H) or OFF (D = 00H) |
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| [RPT] | – | – | – | R | 84H | Switch Simplex Operation (R = 00H), Minus Shift (R = 01H), |
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| or Plus Shift (R = 02H) for Repeater Operation |
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| [AuB] | – | – | – | – | 85H | Copy Data Display in |
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| Set SUB |
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| Enter new operating frequency in F1 ~ F4, in BCD format: |
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| F1 | F2 | F3 | F4 | 8AH |
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| see text for example. |
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| Operating Freq. |
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| Select filter bandwidth for selected IF (see below): |
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| BANDWIDTH |
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| 8.2 MHz |
| 455 kHz |
| VFO |
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| THRU: X4 = 09 | 6.0 kHz: X4 = 84 | Both: X1 = 00 |
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| 2ud & 3rd IF | X1 | – | – | X4 | 8CH | 2.4 kHz: X4 = 00 2.4 kHz: X4 = 80 |
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| Filter Selection |
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| 2.0 kHz: X4 = 01 | 2.0 kHz: X4 = 81 |
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| 500 Hz: X4 = 02 | 500 Hz: X4 = 82 |
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| 500 Hz: X4 = 03 | 500 Hz: X4 = 83 |
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| MEM. Channel | – | – | S | X | 8DH | Tag memory channels 1 thruogh 99 (X = 01H ~ 6CH), to be |
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| Scan Skip | skipped (S = 01H) or included (S = 00H) while scanning. |
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| Step | – | – | – | T | 8EH | Step frequency of |
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| UP/DOWN |
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| Select one of 33 CTCSS subaudible tones |
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| where E = 00H ~ 20H |
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| E = 00H | 67.0 Hz |
| E = 0BH 118.8 Hz | E = 16H 173.8 Hz |
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| E = 01H | 71.9 Hz |
| E = 0CH 123.0 Hz | E = 17H 179.9 Hz |
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| E = 02H | 77.0 Hz |
| E = 0DH 127.3 Hz | E = 18H 186.2 Hz |
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| CTCSS |
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| E = 03H | 82.5 Hz |
| E = 0EH 131.8 Hz | E = 19H 192.8 Hz |
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| Encoder | E | E | E | E | 90H | E = 04H | 88.5 Hz |
| E = 0FH 136.5 Hz | E = 1AH 203.5 Hz |
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| Tone Frequency |
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| E = 05H | 94.8 Hz |
| E = 10H | 141.3 Hz | E = 1BH 210.7 Hz |
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| E = 06H 100.0 Hz |
| E = 11H | 146.2 Hz | E = 1CH 218.1 Hz |
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| E = 07H 103.5 Hz |
| E = 12H 151.4 Hz | E = 1DH 225.7 Hz |
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| E = 08H 107.2 Hz |
| E = 13H 156.7 Hz | E = 1EH 233.6 Hz |
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| E = 09H 110.9 Hz | E = 14H 162.2 Hz | E = 1FH 241.8 Hz |
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| E = 0AH 114.8 Hz | E = 15H 167.9 Hz | E = 20H 250.3 Hz |
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| Instruct radio to return digitized indications of various meter |
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| level readings and front panel control settings (4 repeated |
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| bytes, and F7H) selected by: |
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| M = 00H Main | M = 87H TUN Meter |
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| Read Meter & |
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| M = 01H Sub | M = F0H Shuttle Jog Dial |
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| – | – | – | – | F7H | M = 80H PO Meter |
| M = F1H CW Pitch Setting |
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| Panel Controls |
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| M = 81H ALC Meter | M = F2H Remote Control A/D Level |
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| M = 83H IC Meter |
| M = F3H SHIFT Setting |
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| M = 84H VCC Meter | M = F4H WIDTH Setting |
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| M = 85H SWR Meter | M = F5H EDSP Contour Selection |
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| M = 86H MIC Meter | M = F6H EDSP NR Selection |
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| Set offset for RPT shift, valid values are |
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| Repeater | X1 | X2 | X3 | X4 | F9H | 0 ~ 500 kHz in |
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| Offset | X1 is 10’s & 100’s of Hz |
| X2 is 1’s & 10’s of kHz |
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| X3 is must be 00H, 01H, or 02H X4 is must be 00H |
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page 96 |
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