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Author Topic: IC-718 CV-i Won't Read Frequency  (Read 2771 times)
K3ZL
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Posts: 3




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« on: November 08, 2015, 07:07:14 PM »

Using a serial to usb cable.  worked perfectly first few times.  Now it is not reading the frequency: "Frequency=0

Other settings are:
COM3
baud 19,200
CIV 5E    Any ideas appreciated.
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AA6YQ
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Posts: 2623


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« Reply #1 on: November 08, 2015, 08:29:17 PM »

Using a serial to usb cable.  worked perfectly first few times.  Now it is not reading the frequency: "Frequency=0

Other settings are:
COM3
baud 19,200
CIV 5E    Any ideas appreciated.

Verify that both ends of that USB cable are firmly seated.

Use the Windows Device Manager (accessible via the Windows Control Panel) to confirm that your IC-7200 is still creating COM3 (Windows may be assigning a different number to the virtual COM port that your IC-7200 creates).

Confirm that your transceiver control application and radio are both still set to the same baud rate and CI-V address.

If the above actions produce no joy, reboot Windows and try again just in case Windows was in a bad state.

The next step involves determining whether the problem is "no CI-V commands being sent to radio" or "CI-V commands are being sent, but no responses from the radio are being received". If your transceiver control application can display CI-V bus activity, take a look to see what's going on. Otherwise, you'll need to capture the interactions using a serial port monitor like PortMon .
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K3ZL
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Posts: 3




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« Reply #2 on: November 27, 2015, 01:27:56 AM »

Ok, tnx
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N0IU
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Posts: 2005


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« Reply #3 on: November 27, 2015, 05:13:21 AM »

Use the Windows Device Manager (accessible via the Windows Control Panel) to confirm that your IC-7200 is still creating COM3 (Windows may be assigning a different number to the virtual COM port that your IC-7200 creates).

Well the only issue is that K3ZL is using an IC-718, not an IC-7200 and the IC-718 does not have a USB port. It just has a normal CI-V jack on the back of the radio.

A couple of other things...

What software are you using to connect to the radio?
If you are running Windows, what version are you running?
What kind of cable are you using? There are some "economy" cables out there that do not use a genuine Prolific chipset for USB to serial conversion and Windows 8 and 10 have problems with them.

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