Hardware Hacking

1) Cut D-25.
2) Cut D-32.
3) Cut both traces on the PCB going to the clarifier .
4) Solder one wire to PCB ground.
5) Solder a wire from the other cut trace to an 8 VDC source
(note: 8 volts can be found on the trace that connects R-107 & R-106
6)This should give you 3 kc of slide.If more slide is wanted then jump D-24 with a piece of wire.(Sometimes it works)

1)Find the backside of the clarifier knob.
2)Solder the bottom pin to GROUND. 3)Solder a wire to the top pin of the PCB.
This pin should be cut loose from any traces going to it!)
4)Solder that wire to an 8VDC source.This can be found on the second jumper behind the PLL chip(IC-2).
5)Cut D-25.

1)Find the Brown Wire and White Wires from Clarifer.
2)Cut the White Wire from the PC Board and solder it to Ground.
3)The Brown wire which is located on the board behind the meter where all the buttons are goes to 8v this is found on the left side front 2nd trace use a Volt meter to find this.
4)Cut D30.
5)Put the covers back on and power radio.

When this mod is finished you should have 2.5 Kc to 4 Kc slide up and down. not all radios of the P-300 series is the same on slide.

MODULATION - Adjust VR-14
AM POWER - VR-13
SSB POWER - VR-12