[Elecraft] Can't get KAT500 Utility to connect to COM port

[Richard Ferch]

The KAT500, KPA500 and K3/P3 all use separate COM port connections. If 
COM3 is connected to your K3/P3, then you cannot use COM3 with either 
the KPA500 or the KAT500.

The USB connector between the computer and the KAT500 is a KXUSB. It is 
not on COM3; it is on a different COM port. If you don't know which port 
it is on, you can use the "Refresh Port List" button under the Port tab 
in the KAT500 Utility to find a list of active COM ports in your system 
and then try them out until you find the one that the KAT500 is on. It 
will not be COM3.

As for the KPA500, you can disconnect the cable from the computer to the 
P3 and connect it to the KPA500's RS232(PC) port, at which time the 
KPA500 utility will be able to connect to the KPA500 on COM3, or you can 
get another KUSB or equivalent and connect it to the KPA500, in which 
case it will be on a different COM port number (not COM3, and not the 
one the KAT500 is on).

73,
Rich VE3KI


K8RS wrote:

> I started to upgrade the firmware for my K3/P3/KAT500/KPA500 station, but I cannot go \
> forward  because I cannot get the KAT500 Utility nor the KPA500 Utility to connect to \
> my computer’s COM 3. The K3 and P3 Utilities recognize COM 3 instantly.