President Grant User Manual

President Grant Export (PC-999) Mods

President Grant "Classic" (Grey face, Dual 2312 finals, No ASC, PC999AE board)

Remove white wire from pin foil side of the PLL. Connect cut trace.
Remove second white wire on foil side towards the front of the radio
Find purple wire behind ABC band switch.
This wire is 3 inches long and has an open end with a piece of clear tubing over the end.
Connect this wire to board ground.
A good place is on the foil side where you took the second whi
The spot closest to the front edge is ground.
That's it!
You now have three bands of 40CH's.
Optional, retune rear slug for max peak power on CH 20.
This slug has white wax on the top, It is tuned for 28mhz, typical 5 watt pep improvement
balanced RF power output across bands.

This mod was sent to me by Clark

I make a special EPROM expansion board that will add 4 more bands
to radios that use either Binary or BCD programming, it also adds a
10KHz shift function as well,

click here to find out more.

(only other white wire)

te wire off.

and

It will give 1 band down, 1 band up, UK 40 (up 64 channels without Alpha
ch hops), NZ 40 (down 63 channels) and 10KHZ shift.

On a 40 channel radio it will give coverage fr
the normal low,mid and high bands of 26.515-27.855), that is a total of 167
channels !

I can also make a custom board upon request which will give whatever
frequency range you want (within the limits of the radio).

Chan

nel Expansion

1) The switch needed is a SPST/CENTER-OFF type.Mount this in the
radio somewhere.

2) Find the PLL MB8719 chip.Find pin #11 and cut the trace going to
it on the foil side of the PCB.

om 26.335 to 28.005 (including

3) Solder a 4.7k ohm resistor across the cut that you j

4) Now you are ready to attach the wires from the switch to the

ust made.

locations on the PCB.

5) Solder a wire from the top pin on the switch to PCB ground.

6) Solder a wire from the middle pin on the switch to pin #11.

7) Solder a wire from the bott

(

If you do not get ALL the new channels adjust the VCO coil, L-18)

ØWith the switch in the UP position:
12 = 27.875 17 = 27.935 22 = 27.995 26 = 28.035

13 = 27.885 18 = 27.945 23 = 28.025 27 = 28.045
14 = 27.895 19 = 27.9
15 = 27.905 20 = 27.975 25 = 28.015
16 = 27.925 21 = 27.985

With the switch in the
With the switch in the

55 24 = 28.005 28 = 28.055

CENTER
DOWN

om pin on the switch to pin #9.

position is regular channels

position:

12 = 26.335 17 = 26.395 21 = 26.455 25 = 26.485
13 = 26.345 18 = 26.
14 = 26.355 19 = 26.425 23 = 26.495 27 = 26.505
15 = 26.365 20 = 26.445 24 = 26.475
16 = 26.385

1) Cut D-45.

2) Find D-79 and jump it (

3) Remove r-120 and replace it wit

4) Find the
to the PCB. Solder it into the hole that is next to where R-

5) Find the
to

the PCB. Solder it to a constant 8.5 volt supply.(This can be the

of TR-39 )

Hopefully this should give you about 3 khz of slide.

President Grant SLIDER mod

BLUE
GREY

wire from the clarifier knob and cut it just before it connects

405 22 = 26.465 26 = 26.495

Solder a wire across it)

h a 470 ohm resistor.

wire from the clarifier knob and cut it just before it connects

120 is.

center

pin