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ICOM Land Mobile Radio - Discussion forum for ICOM land mobile radio equipment such as the IC-F series radios. Please do not post amateur radio topics here.

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Old 12-09-2016, 3:23 PM
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Default ICOM F21 programming problem

All,

I was recently given a ICOM F21 from a business that had recently switched to DMR. After charging the battery, I tried programming it with my USB programming cable and Windows 7 programming laptop that i've used to program ICOM and Kenwood radios. The CS-F11 software (version 1.2) isn't able to read or write to the radio. I keep getting a "check cable & comm port) type errors. I've used the same cable and laptop to program other ICOM radios, so I know they both work. In fact, I used the cable to program two other ICOM radios after I first tried to program the F21.

I tried an old Windows XP laptop with the same cable, and I get the same result. I've verified the COMM ports on both laptops match what is selected in the software. I haven't been able to get another USB or serial cable, so I haven't been able to eliminate the cable. Honestly, I would prefer not to spend the money, since my USB cable works for other ICOM radios.

The only thing i've noticed is that when I power on the radio, it emits a long tone. Not a beep, but a long tone that will occur until I power the radio off.

Does anyone have any suggestions?
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Old 12-09-2016, 4:39 PM
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It's been a long time, but when I was programming those, they only had RS-232 cables. Pretty sure the older programming cables/radios are not compatible with the newer stuff, but it's been years since I've done any Icom programming.
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Old 04-23-2017, 7:31 AM
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Just to close out the loop, and as an FYI for everyone.

The long beep on power up was caused by a bad battery. I replaced the battery, and the long beep went away.

I did have a lot of problems programming the F21. Both early 2000s vintage XP computers with serial ports wouldn't program the radio.

On a whim, I loaded the software on a Windows 8 box and used my USB programming cable. The F21 programmed right up without a hiccup!
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Old 05-29-2017, 4:56 PM
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I have also fixed programming cable/computer/software compatibility issues by
1- scrubbing the battery terminals with a pencil eraser so the radio stays powered on, and
2- flexing the 3.5mm -gently- towards the back while reading/writing ... and holding my breath.

Edit: Out of habit I always twirl the 3.5mm as I plug it in to make sure it makes good contact. That's so automatic I didn't think about it at first.
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