K1EL
WKUSB with WinKeyer3 User Manual
WKUSB
WKUSB User Manual
12/20/2017 Rev 1.0
Page 37
priority mode will generate dits and dahs automatically in response to single paddle presses, but
when both paddles are pressed either dit or dah has priority.
Speed Pot Lock
This tells WKUSB to ignore host speed control and to instead lock the current sending speed to
the speed pot.
Speed Pot Minimum and Maximum
The limits for the speed pot can be specified. The minimum must be greater or equal to 5 while
the maximum must be less than or equal to 99 WPM. This allows the speed pot to be tailored to
the user’s needs.
Sidetone Enable
Sidetone can be turned on or off. Local sidetone is not needed if the user is going to use the
sidetone generated by the transceiver they are using. This is the case in the majority of setups.
That’s why WKUSB does not have a built in sidetone speaker. The enable control is used instead
to enable or disable the debug keying LED.
Sidetone Frequency
WKUSB’s local sidetone frequency is adjustable in fine increments from about 500Hz to 4000Hz
SO2R Enable
This is a special mode that is only applicable to WK keyers that have two keying outputs, each
with a dedicated PTT output. WKUSB provides a basic SO2R capability. When SO2R mode is
enabled, PTT operation is modified. PTT1 becomes a radio select output while PTT2 becomes a
common PTT output for both ports. To utilize PTT for two radio setups requires additional gating
as illustrated below:
The PTT outputs on WKUSB are open collector so pull up resistors are required to generate logic
high and low conditions. PTT1 will be logic zero when radio 1 is selected and logic one when
radio 2 is selected.
