Select the Model number that matches your unit. Type in the frequency you wish to use for transmit or receive in the appropriate field, then click outside the box. The xtal frequency will appear! If you have a xtal and want to see the frequency where it can be used, enter the xtal frequency in the appropriate field, then click outside the box. Always double check the math before ordering crystals.
| Motorola Mitrek Channel Element Oscillator Frequency Calculation for the Transmitter | |||||
|---|---|---|---|---|---|
| Transmitter | |||||
| Model Number Group | Freq Band | Formula | Crystal Range (MHz) | Tx Freq MHz Fo | Click for Xtal Fx |
| T41JJA-T81JJA Extended | 29.0-29.7 | Fo /3 | 9.66-9.90 | ||
| T41JJA-T81JJA | 29.7-39 | Fo /3 | 9.90-13.00 | ||
| T41JJA-T81JJA | 39-50 | Fo /3 | 13.00-16.66 | ||
| T41JJA-T81JJA Extended | 50-54 | Fo /3 | 16.66-18.00 | ||
| T43JJA-T83JJA | 136-146 | Fo /12 | 11.33-12.16 | ||
| T43JJA-T83JJA | 144-148 | Fo /12 | 12.00-12.33 | ||
| T43JJA-T83JJA | 146-174 | Fo /12 | 12.16-14.5 | ||
| T43JJA-T83JJA Modified | 222-225 | Fo /18 | 12.33-12.5 | ||
| T44JJA-T84JJA | 406-420 | Fo /36 | 12.22-12.50 | ||
| T44JJA-T84JJA Extended | 420-430 | Fo /36 | 12.22-12.50 | ||
| T44JJA-T84JJA Extended | 430-450 | Fo /36 | 12.22-12.50 | ||
| T44JJA-T74JJA* | 450-470 | Fo /36 | 18.26-20.84 | ||
| T44JJA-T74JJA | 470-494 | Fo /36 | 18.05-18.88 | ||
| T44JJA-T74JJA* | 494-512 | Fo /36 | 18.97-20.72 | ||
| Motorola Mitrek Channel Element Xtal Oscillator Frequency Calculation for the Receiver | |||||
| Receiver | |||||
| Model Number Group | Freq Band | Formula | Crystal Range (MHz) | Calculator Rx Freq Fo |
Click for Xtal Fx |
| T41JJA-T81JJA | 25-30 | (Fo+5.26) /2 | 15.13-17.63 | ||
| T41JJA-T81JJA | 30-36 | (Fo+5.26) /3 | 11.75-13.75 | ||
| T41JJA-T81JJA | 36-42 | (Fo+5.26) /3 | 13.75-14.91 | ||
| T41JJA-T81JJA | 42-50 | (Fo-5.26) /3 | 12.24-14.91 | ||
| T41JJA-T81JJA Extended -Low inj | 50-54 | (Fo-5.26) /3 | 14.91-16.24 | ||
| T43JJA-T83JJA | 136-146 | (Fo-10.7) /3 | 48.9-52.23 | ||
| T43JJA-T83JJA | 144-148 | (Fo-10.7) /3 | 51.56-52.9 | ||
| T43JJA-T83JJA | 146-174 | (Fo-10.7) /3 | 52.23-61.56 | ||
| T43JJA-T83JJA Modified -Low Inj | 222-225 | (Fo-10.7) /4 | 52.82-53.57 | ||
| T44JJA-T84JJA | 406-420 | (Fo-10.7) /9 | 43.92-45.47 | ||
| T44JJA-T84JJA Extended | 420-430 | (Fo-10.7) /9 | 45.47-46.58 | ||
| T44JJA-T84JJA Extended | 440-450 | (Fo-10.7) /9 | 47.70-48.81 | ||
| T44JJA-T84JJA | 450-470 | (Fo-10.7) /9 | 48.81-51.03 | ||
| T44JJA-T84JJA | 470-494 | (Fo-10.7) /9 | 51.03-53.25 | ||
| T44JJA-T84JJA | 494-512 | (Fo-10.7) /9 | 53.70-55.7 | ||