Ptt/Fsk Tab - microHAM micro KEYER 2R Manual

On this tab you can configure operation of PTT and keyboard FSK. This defines the interactions among
the multiple PTT input and the PTT outputs.
PTT INPUTS
MK2R has several PTT inputs available for each radio:
PTT generated by the logging program on the virtual COM port RTS or DTR
2 nd PTT generated by a second application on the virtual COM port RTS or DTR
Both PTT and 2
primary port number and signal line (RTS or DTR) used for serial PTT is shown on this tab (RTS on
COM3 on the screen shot that follows).
One or two foot switches attached to the MK2R rear panel RCA jacks.
MK2R can be configured to recognize one or two foot switches on the SO2R tab. If MK2R is
configured for one foot switch, both foot switch inputs will operate in parallel.
The Foot switch PTT control box defines which PTT output will be generated in response to a foot
switch closure. Use PTT1 - PTT2 is offered only for use in radios in which the rear PTT input
operates the same in all modes (Voice, CW, Digital).
When either foot switch is active, a low is placed on pin 15 of the LPT port for compatibility with DOS
logging programs.
The microphone PTT switch of the microphone connected to the RJ45 MIC jack.
This input is hardwired to the FS1 input of the MK2R.
WinKey generated PTT.
WinKeyer2 generates separate PTT signals for each radio. The current version of MK2R firmware
generates PTT1 outputs based on WinKey PTT signals. WinKey PTT generation can be enabled or
disabled from the CW/WinKey tab. Note: when WinKey is controlled by a logging program, the
program configuration determines whether WinKey generates PTT.
Transceiver PTT status inputs (PTTIN1, PTTIN2) for sensing PTT status of the transceiver.
To use VOX or software command for transmit/receive switching with power amplifiers connected to
the MK2R PAPTT outputs, the PTT output from RADIO1 should be connected to PTTIN1 and the
PTT output from RADIO2 should be connected to PTTIN2. Closing PTTIN will immediately cause
PAPTT and LNA PTT to close if the are enabled.
Warning: The use of VOX or software command for transmit/receive switching is not recommended
and will likely destroy any low noise preamplifier inserted in the RF line.
Virtual PTT generated by MK2R based on CW signal presence.
MK2R generates "virtual" PTT from CW outputs when necessary for controlling transmit focus and
PAPTT or LNA PTT if the software does not generate PTT. The leading edge of this "virtual PTT" is
the same as the leading edge of the CW signal. The tail can be extended up to 2.5 seconds (using
the WinKey PTT tail parameter).
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nd PTT generate the same Serial PTT input (they are logically in parallel). The

PTT/FSK TAB

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