Windows will usually assign the same port number IF you plug it into the
same USB port.
You can go into Properties for each device and change the port number -
COM1 and COM2 are usually reserved for serial ports on the motherboard,
even if no RS-232 ports are present on the board.
73,
Don W3FPR
On 4/25/2019 4:14 PM, David Haines wrote:
Thanks for the confirmation. That's exactly consistent with my
experience. It's just too bad it has to be that way.
david, KC1DNY
n 4/25/2019 3:58 PM, Bob McGraw K4TAX wrote:
Sometimes you can disconnect the cable and then plug it back in and
Windows will recognize the device. In other cases you will need to
power down the device and back up in order for Windows to recognize
the device.
Some assignments are sticky and will remain, while other cases it will
be necessary to assign a port number every time. That is controlled
in the device driver code and the way Windows handles port assignments.
Bob, K4TAX
Sent from my iPhone
On Apr 25, 2019, at 12:53 PM, Jim KO5V <k...@earthlink.net> wrote:
Hi Bob,
I use Device Manager, and I've done what you described. However, it
doesn't always seem to work. Sometimes the device ignores the COM
port selected in its program and D.M, sometimes the settings won't
stay selected after I close the program. Do I need to use Device
Manager each time I start a device?
Thanks. 73, Jim KO5V
-----Original Message-----
From: Bob McGraw K4TAX <rmcg...@blomand.net>
Sent: Apr 25, 2019 11:26 AM
To: Jim KO5V <k...@earthlink.net>
Cc: Elecraft List <elecraft@mailman.qth.net>
Subject: Re: [Elecraft] [K2] Rig Control Error
With Windows, DEVICE MANAGER is your friend. Having it open and on
screen, you can plug in devices or unplug devices and see, in real
time, the port they are using. This will then be the port to
assign in an application. Also check the parameters of the port to
assure the device can communicate with the port.
Bob, K4TAX
Sent from my iPhone
On Apr 25, 2019, at 12:18 PM, Jim KO5V <k...@earthlink.net> wrote:
I have similar problems with my Win7 64 bit machines. It's tough to
configure any additional COM ports, everything seems to eventually
default to COM 3, and I can't make any changes "stick". Using only
one "COM port"device, Sometimes just unplugging, and re-plugging
that device, or stopping and restarting the desired program will
make the computer see the connected device; sometimes,not.
I asked my brother-in-law, a Windows systems guy, what he would do,
and his reply was that he basically does what I've been doing, but
then explained about some "advanced stuff" that he would help me
with, but that I shouldn't try them myself...
Make sure there's nothing else using the COM port, and see if the
program will work (if you haven't already done that).
Good Luck. 73, Jim KO5V
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