On 2014-08-14 9:00 PM, Jim N7US wrote:
I connected an A/B switchbox to switch the radio between the MKII and
a serial port on the computer (or an Edgeport US/serial box).
As did I ... COM1 on the motherboard goes to a 4 port switch. Two of
the ports go to two ports switches on each K3/P3. The third port goes
to the cable for the XG3 and the fourth port goes to a AA5AU style
CW/PTT/FSK interface for general testing.
73,
... Joe, W4TV
On 2014-08-14 9:00 PM, Jim N7US wrote:
I connected an A/B switchbox to switch the radio between the MKII and a
serial port on the computer (or an Edgeport US/serial box). It has been
easy to switch the K3/P3 to the serial port for firmware updates.
73, Jim N7US
-----Original Message-----
Every microHAM Users Manual includes a specific warning *NOT* to upload
*any* transceiver firmware via the microHAM device. The microHAM device
constantly polls the transceiver for frequency and mode. Those polls are
not compatible with firmware uploads.
73,
... Joe, W4TV
On 2014-08-14 7:30 PM, Don Wilhelm wrote:
Kurt,
Both Microham and Elecraft warn that one should not attempt firmware
downloads through the MicroHam device. Other K3Utility functions work
fine through the Microham device.
If you have a real serial port on the computer, that is the preferred
connection, otherwise a good USB to serial adapter is the best answer.
The preferred adapter is one using an FTDI chip. Others may work (and
I can also recommend EdgePort).
BTW - there are counterfeit FTDI and Prolific USB to serial adapters
on the market. Both Prolific and FTDI have created new drivers for
Windows
7 and above that detect those counterfeits and render them unusable -
so steer clear of bargain priced adapters whose instructions tell you
to turn off Windows updates and run their 'special' drivers.
The Elecraft KUSB cable uses an authentic FTDI chip. I have also had
success with a Keyspan adapter that was supplied for testing by a
customer.
73,
Don W3FPR
On 8/14/2014 7:02 PM, Kurt Wiksten wrote:
Thanks to everybody for your advice.
But my problem still not solved, because I am communicating with the
K3 via my Microkeyer2.
Reading the K3 Utility Helpfiles shows that it might be a problem
that my USB to serial connection is via my Microkeyer2 and the
recommendation is to change the cabling so that the PC is connected
directly to the K3 and that cable does not fit the K3 RS232 port.
I suppose I will have to order the KUSB-cable from Elecraft.
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