<div dir="ltr">Jim, I'll give it a try. In the process of returning the Valley FTDI cable now and nice to know I won't have to go the RT route even though I like them for my newer radios. Just don't want to spend that much on an older radio. <div><br></div><div>Mark</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, Jan 11, 2021 at 1:06 PM Jim Unroe <<a href="mailto:rock.unroe@gmail.com">rock.unroe@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">On Mon, Jan 11, 2021 at 3:06 PM Mark Smythe <<a href="mailto:mark.smythe@gmail.com" target="_blank">mark.smythe@gmail.com</a>> wrote:<br>
><br>
> 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.<br>
><br>
> 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%.<br>
><br>
> 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.<br>
> Unfortunately cables with fake "Prolific" chips make the vast majority of cables on the market; genuine Prolific cables are on the more expensive side."<br>
><br>
> Can anyone confirm this to be the case? If so, who makes "genuine Prolific cables"?<br>
><br>
> Mark WA7URJ<br>
><br>
<br>
Programming cables with an unauthorized copy of a Prolific chip will<br>
work, you just have to download, install and select the old Prolific<br>
v3.2.0.0 device driver. This is exactly what I have been doing for<br>
over 8 years. Since the majority of programming cables being supplied<br>
with a radio being submitted for inclusion with CHIRP have been of the<br>
unauthorized copy variety, I just keep the older device driver<br>
installed and selected on the Windows computer that I program radios<br>
with.<br>
<br>
I do have one rare programming cable sporting a genuine Prolific<br>
USB-to-Serial chip. Back when I bought it, I used it to check all of<br>
the Prolific device drivers that I could find in order to determine<br>
which was the last available Prolific driver before they became<br>
cripled. That turned out to be v3.3.2.105. It works great with CHIRP<br>
but is incompatible with some OEM programming software. Falling back<br>
to v3.2.0.0 was necessary to work with both.<br>
<br>
Page with link to V3.2.0.0 driver and instructions for installing and<br>
selecting: <a href="https://www.miklor.com/COM/UV_Drivers.php" rel="noreferrer" target="_blank">https://www.miklor.com/COM/UV_Drivers.php</a><br>
<br>
Jim KC9HI<br>
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