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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