Uniden Grant xl clarifier

[doc_no1]

Hello I did the mod to my grant xl to open the clarifier and it works but i get way to much slide it like this if i go on 27.205 and move the claifier to the - side it will go down to 27.190 and if i go to the + side it will go 27.220
and here is what i did
take out r44 d52 and put jumper across r174 red to ground and yello to pin 3 mb3756 and the board number is pb-208ad would like it to just slide 5kc..

thanks
later doc

[frogman296]

Unlocking the Clarifier

1) Remove D52 and R44.
2) Remove R174 and place a jumper in its spot.
3) Follow the Red wire from the clarifier control to where it attaches to the PC board
and unsolder it from the board.
4) Resolder the Red wire to the PC board ground.
5) Follow the Orange wire from the clarifier control to where it attaches to the PC board
and unsolder it from the board.
6) Resolder this Orange wire to pin 3 of the MB3756 regulator.

You should see about 5 khz of slide. (1 khz up and 4 khz down)


10 Khz Jump

This mod is kinda tricky! It will not jump on all channels. The easiest way to give you both up and down jumps is with a SPDT Toggle switch.

1) Cut trace to pin 16 on the PLL.
2) Jump a 4.7k resister accross the cut you made.
3) Solder a jumper from center of switch to pin 9 on PLL. (8 volts)
4) One side of the switch goes to the cut side of pin 16 on PLL.
5) The other side of the switch goes to pin 18 on PLL.