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Windows software for President Grant


 Frequency range from 26,345MHz to 28,065MHz
 Step Up and Step Down
 Scan Up and Scan Down
 Dual Watch
 Repeater function (Split)
 2 Memory Bank with 100 memories

System Requirements:
 IBM PC compatible
 Windows 16/32 bit and Windows NT operating system
 1 MB of RAM, 1 MB of free disk space
 Grant Software
 President Grant CB-Radio

 Few component`s
 1 pcs. 25-Pin D-SUB Connector
 1 pcs. NULL-Modem Cable

The connection to Printer port.
25-Pin Printer Connector
Install a 25-pin D-SUB Male connector on the radio`s bottom cover, and use a NullModem cable to the computer`s printer port.
See Radio interfacing to Printer Port for more information about using PrinterPort.

PinPrinterPortDirectionUsageConnection to:Active H/L
2Data 0Out to radioMB8719 pin 16HIGH
3Data 1Out to radioMB8719 pin 15HIGH
4Data 2Out to radioMB8719 pin 14HIGH
5Data 3Out to radioMB8719 pin 13HIGH
6Data 4Out to radioMB8719 pin 12HIGH
7Data 5Out to radioMB8719 pin 11HIGH
8Data 6Out to radioMB8719 pin 10HIGH
10ACKIn from radioPTT SwitchMicrophone connector Pin 3LOW
11BusyIn from radioSquelch ControlSouelch circuit, IC1 pin 8LOW
18GroundGroundMB8719 pin 18

Before modificationAfter modification
MB8719  Circuit

To protect the PrinterPort:
Cut the trace to MB8719 pin 10 to 16
MB8719  Circuit

and insert 7 pcs. 4,7kW resistors across the cutted traces.

Connection to the PrinterPortSquelch sircuit
MB8719 Connection Circuit

Connect PrinterPort pin 11 to Squelch circuit, IC1 pin 8.

Use also a 1N4148 or similar diode to protect the input fron the PTT-Switch.

User Manual

 Grant.EXE and install the file under C:\Grant\
 Inpout16.DLL and install the file under C:\WINDOWS\SYSTEM\
 VBRUN300.DLL and install the file under C:\WINDOWS\SYSTEM\

Saving files:
PC: Right-click on link and choose "Save File As"
Mac: Click and hold on link and choose "Save File As"