I unplug the microHAM RS-232 cable and connect a standard
cable from COM1 (the serial port on the motherboard) of
my test system when I need to upload firmware. However,
I know of several others who are using a serial A/B switch
without problems.
For safety reasons make sure the switch is a break before
make (non-shorting) type.
73,
... Joe, W4TV
On 12/17/2010 10:45 PM, [email protected] wrote:
> At times, my microHam CW Keyer is connected to my K3 via the P3. However,
> when I want to download new firmware for the K3, I have to disconnect the
> CW Keyer from the RS232 port, and connect the DB9 from the computer's serial
> port to the K3 via the P3.
>
> Can I use a DB9 A/B switch to switch between the the two DB9 cables without
> creating any problems?
>
> 73, George
>
> George Wagner, K5KG
> Sarasota, FL
> 941-400-1960 cell
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