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Controlling an Amateur Radio Rig from your PC

Posted on 12 July 201316 March 2020 By Pete M0PSX 5 Comments on Controlling an Amateur Radio Rig from your PC

Controlling your amateur radio equipment from a PC can come in very handy, and here’s why:

  • Help with electronic logging – Enters the frequency and mode into your log automatically
  • Use features such as computer-controlled scanning and band monitoring
  • Very useful for controlling Push-to-Talk (PTT) with data services

In preparation for a club meeting at the Chelmsford Amateur Radio Society in Chelmsford, I thought it might be handy to document how I’m able to control my Icom IC-718 from a PC.

Connecting and Icom IC-718 to a laptop:

To connect a computer to a radio, you’ll normally need some kind of interface. This is commonly referred to as a CAT – Computer Assisted Tuning. I use the popular DigiMaster ProPlus, which handles both CAT and Data, meaning only one interface is needed.

Digimaster Pro
Digimaster Pro CAT Interface box

My Interface connects to the Icom rig via the a 3.5mm jack socket called the CI-V Remote, and then to the PC via a USB cable, as pictured here:

Connecting the Icom 718 via the CI-V CAT socket
Connecting the Icom 718 via the CI-V CAT socket

CAT Drivers:

Connection is very straightforward, and no special drivers are needed as Windows Vista and Windows 7 seem to be able to detect the CAT without a problem and install suitable drivers.

Once installed, if I look in Windows Control Panel > Device Manager, under “Ports (COM and LPT), I see two USB Serial COM ports – one is for the CAT (tuning) and one is for the PTT (data). Here’s a screenshot of what I see:

USB Ports installed for the DigiMaster Pro CAT
USB Ports installed for the DigiMaster Pro CAT

Ideally, your com ports need to be in the number range COM1 to COM 16. If they are over 16, they may not be found by your software – See the box further down the page for details on how to change your CAT’s COM port numbers.

Making the connection

To get the radio and rig to talk to each other, it’s important to get the comms settings correct. On my Icom IC-718, here’s what I have to do:

  • Set the baud rate: This is the “CI-V Baud” setting in the radio’s menu. “Auto” works for me, with the baud rate actually being 9600

That’s it.

Software

Once you have the CAT interface connected between computer and radio, then you can use the amateur radio software of your choice – it’s a case of making sure that whatever software you install is set to use the right com port and baud rate. I’ve been able to use: Ham Radio Deluxe, JT65, Logger 32, MMSSTV and just about any other piece of software I’ve tried.

Setting up Logger 32

At the July 2013 CARS meeting in Great Baddow, one of the topics was setting up Logger32 for the RGSB G100RSGB callsign

  • Go to the Logger32 Setup menu
  • Select “Radio” from the menu
  • Select “Radio 1 configuration”
  • Set the Com port for your CAT, the correct baud rate and select your make and model of radio. Here’s what works for my Icom IC-718:
Loger32 Settings for Icon IC-718 rig
Logger32 Settings for Icom IC-718 rig

With the settings in place, now go back to the Radio menu, make sure “Use Radio 1” is clecked, and select “Open Port”:

Logger32 Radio Menu
Logger32 Radio Menu
Changing Com Port Numbers. Software such asLogger32only6 supports com ports 1 to 16. If your CAR appears on a COM highertahn 16, change it from Control Panel > Device Manager > Ports. Go to Properties for the com port, go to Port Settings > Advanced, and change the COM port there:

Device Manager Com Port Advanced Settings dialog
Device Manager Com Port Advanced Settings dialog

 

Here’s the Logger32 QSO entry screen showing the frequency and mode from the Icom IC-718… making entry of frequency, band and mode very easy!

Logger32 QSO entry screen with frequency info
Logger32 QSO entry screen with frequency info

For information, here’s the settings we use to connect Ham Radio Deluxe to our iCom IC-718 via the Digimaster Pro

Ham Radio Deluxe Settings for Icom IC-718 rig
Ham Radio Deluxe Settings for Icom IC-718 rig

Hope this article has been helpful. Any questions, please add them below…

Hardware, How To Tags:CAT interface, DigiMaster, icom ic-718

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Previous Post: RSGB Centenary Day at Bletchley Park
Next Post: CARS: July Club Night – Training and Logger32

Comments (5) on “Controlling an Amateur Radio Rig from your PC”

  1. chris says:
    14 March 2015 at 19:49

    I have a cat cable for an yeasu ft 840 but i want to use the cable on an ft 857d i know i have to change the mini din plug to a 8 pin but cant find the information on the net on which plug pin to connect to so i can use my digi master cat control box
    can you help?????
    thanks
    chris
    m6yxz

    Reply
  2. Ron says:
    16 March 2015 at 10:26

    Hi Chris, you can find the info about the ft-857d CAT interface plucg by downloading the user manual pdf and reading item 2 on page 32. That shows the connections for the CAT plug. Hope that helps.
    Ron G0PVW

    Reply
  3. chris says:
    11 May 2015 at 07:26

    Does anybody know where I can get a cable ready made to connect between digimaster and ic 718.
    Regards

    Reply
  4. Pete says:
    11 May 2015 at 07:32

    Try Neil G4ZLP – http://www.g4zlp.co.uk/

    Reply
  5. John says:
    25 March 2016 at 12:51

    How to make our own cable would be nice anyone have the pin outs for all the connection and may be a picture gide

    Reply

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