| Uniden PC 76XL |
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| Power Tweek and Modulation 1) Change final RF transistor to a 2SC1969. 2) Change driver transistor to a 2SC1957. (Remember to put heatsink grease on the new parts) 3) Change R123 to a .47 ohm resister. 4) Change R58 to a 2.7 ohm resister. 5) Remove D8 and place a jumper in its spot. 6) Change C71 to a 33 uf 16 volt polarized electrolytic capacitor. 7) Parallel a 47pF cap with C57. 8) Jump a 47pF cap across R55. 9) Re-tune L14, L16, L17, L20, L121 You can parallel a 100pF cap with C62 for a higher dead key. If you do this, remember you'll have less swing and your final RF transistor will heat up more. VR1 RX Gain VR2 RX Meter VR3 Squelch VR4 Modulation Control (AMC) VR5 TX Meter VR6 Antenna Warning Light |