Control you IC-R8500 remotely using the Visual Basic Version 5 MSComm Control and your PC's Serial Port.
Following is an example I wrote using the Visual Basic Version 5 MSComm Control which sets the IC-R8500 frequency to 1,234,567,890 Hz:
The ICOM range of communications receivers use variable length binary command sets, that is, ASCII text commands cannot be sent to the equipment using a text-based terminal such as Windows Terminal. It is therefore important to convert the control command set to a format the equipment recognises.
A typical binary command set is FEFE4AE0dataFD
In this example the data field contains the Set Frequency Command and the desired frequency in Hz i.e.
05 is the Set Frequency Command and 9078563412 is the desired frequency. For a complete Listing of Control Command Sets refer to your ICOM Instruction Manual.
Convert the HEX values to Decimal values for each Byte in the binary command set i.e.
FE=254, FE=254, 4A=74, E0=224, 05=5, 90=144, 78=120, 56=86, 34=52, 12=18, FD=253
Thereafter pass the ASCII character of each Byte above to the MSComm Control.
Note: The MSComm Control is named RS232 in this example:
Raimund Forstmeier, a friend from Padova (Italy) has written a very useful program in VB.NET to send frequencies, modes, etc. to the ICOM IC-R8500 via RS-232 (serial port). Frequencies, modes and associated descriptions are stored in a text file. Instructions are included in the ReadMe.txt file. The program might work with other ICOM Radio's too, give it a try. You are welcome to download it. Thank you Raimund.
Latest version: 25 July 2017 (v1.5.1):
Direct download: Icom_IC-R8500_v25July2017_Std_Edition.zip (Standard Edition) v1.5.1
Direct download: Icom_IC-R8500_v25July2017_FW35_Edition (compiled for FrameWork 3.5) v1.5.1
Note: Should you experience difficulties running the Standard Edition, download and try the version compiled for FrameWork 3.5.
Additional information: http://www.intrasystem.it/Frequency/Frequency.html
Radio Frequency (RF)