Preventing unexpected transmissions when using FTDI devices

[Bob Wilson, N6TV]

Elecraft K3 MCU version 5.33 added the new "USB SAFE" option as a default
(CONFIG:PTT-KEY, Tap '1'), which prevents unexpected transmissions when you
restart Windows or reconnect an FTDI adapter.

This works fine when controlling a K3 or K3S via USB, but it doesn't help
when using an FTDI USB-to-Serial adapter for CW / FSK / PTT keying on a
separate serial port.

I've published a 2-page document online, with screen shots, describing
step-by-step how to use the Windows Device Manager to correct the default
"Serial Enumerator" and "Modem Control" options set by the FTDI drivers,
options which Windows unfortunately enables every time you connect a new
FTDI adapter.  Every FTDI port must be independently configured at least
once.

The short link to the online document is here:

https://bit.ly/FTDItip


These FTDI settings are also recommended when using the S-BOX-USB
<https://bit.ly/S-BOX> with a K3 or K3S, especially when used with the
RemoteHams "Use RTS as Power" option.

If anyone on this list uses a MAC or Linux box with an FTDI adapter or FTDI
KUSB cable, and the macOS offers the equivalent device options, please send
me the screen shots (.PNG format preferred), and I'll add them to the
document.

Thank you!

73,
Bob, N6TV
https://bit.ly/S-BOX
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[Elecraft mailing list]

Bob;

This is a Windows-only issue that dates back to their use of serial mice. It is not  problem on the Mac, which has no reason to toggle the serial port control signals on startup.

73!
Jack, W6FB

> On Aug 12, 2018, at 3:50 PM, Bob Wilson, N6TV <[hidden email]> wrote:
>
> Elecraft K3 MCU version 5.33 added the new "USB SAFE" option as a default
> (CONFIG:PTT-KEY, Tap '1'), which prevents unexpected transmissions when you
> restart Windows or reconnect an FTDI adapter.
>
> This works fine when controlling a K3 or K3S via USB, but it doesn't help
> when using an FTDI USB-to-Serial adapter for CW / FSK / PTT keying on a
> separate serial port.
>
> I've published a 2-page document online, with screen shots, describing
> step-by-step how to use the Windows Device Manager to correct the default
> "Serial Enumerator" and "Modem Control" options set by the FTDI drivers,
> options which Windows unfortunately enables every time you connect a new
> FTDI adapter.  Every FTDI port must be independently configured at least
> once.
>
> The short link to the online document is here:
>
> https://bit.ly/FTDItip
>
>
> These FTDI settings are also recommended when using the S-BOX-USB
> <https://bit.ly/S-BOX> with a K3 or K3S, especially when used with the
> RemoteHams "Use RTS as Power" option.
>
> If anyone on this list uses a MAC or Linux box with an FTDI adapter or FTDI
> KUSB cable, and the macOS offers the equivalent device options, please send
> me the screen shots (.PNG format preferred), and I'll add them to the
> document.
>
> Thank you!
>
> 73,
> Bob, N6TV
> https://bit.ly/S-BOX
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to [hidden email]

______________________________________________________________
Elecraft mailing list
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Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to [hidden email]