Once I deleted old Chirp and reinstalled run as administrator I finally got the window to select vendor and radio (Icom 2100H) after selecting "download from radio".  The port is defaulted to COM6 which is verified to be the one selected in the FTDI driver.  However when I click OK, I get "An error has occurred - Failed to communicate with the radio.  Unexpected response from radio".  It doesn't matter if I run Chirp normally or as administrator.. same result.  

I read the beginners guide.  The cable TRS plug is firmly seated in the speaker jack, there is no antenna connected and I'm tuned to a clear frequency.  I have tried with squelch both open and closed and with volume settings from 0 - 100%.

At the bottom of Bug #1113 for a similar issue with Icom 2100H, I read:  "Some Icom radios are known to deny cooperation with FTDI cables (even genuine ones). Please try a cable with a genuine Prolific chip.
Unfortunately cables with fake "Prolific" chips make the vast majority of cables on the market; genuine Prolific cables are on the more expensive side."

Can anyone confirm this to be the case?  If so, who makes "genuine Prolific cables"?

Mark WA7URJ 

On Sat, Jan 9, 2021 at 3:02 PM Joe Pizzi <pizzi.joe@gmail.com> wrote:

Some people have reported needing to run Chirp as administrator.

Have you tried that?

Joe Pizzi
KI5LST

On 1/7/2021 9:47 PM, Mark Smythe wrote:
Windows 10 using Valley enterprises USB OPC-478 FTDI and installed recommended drivers.  Cable plugged into PC and IC-2100H.  

I can not select serial port or radio without the clone window.  

Mark

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