K3 with N1MM Contest Logger:

Some notes taken from th N1MM manual pages. 

5.2. K3

    • The K3 contains a firmware bug that was reported several times and never been fixed which affects users that would like to use PTT via radio command. If the Esc key is pressed when a CW transmission begins and you are using PTT via radio command, the radio may not return to RX. The radio RX issue doesn't occur if the owner disconnects the CW jack from the rear of the K3 radio and doesn't change any N1MM Logger setting. Similar issues have been reported on other modes. Delay has been added to the N1MM Logger program when Esc is pressed but the problem still occurs intermittently. The problem seems to be worse with the very early K3 radios. Until this firmware issue is corrected, users may notice that the radio does not return to RX intermittently when using PTT via radio command. When this occurs, make another transmission and end it with the ESC key.
    • Radio control issues have been reported when running other K3 utility software (such as LP-Bridge) in conjunction with N1MM Logger. Please test with only N1MM Logger+ running without the other software before reporting a radio control issue, in order to eliminate the other software as a possible source of the problem.
      • Note also that when using LP-Bridge, changes of band, mode and VFO may take longer than without LP-Bridge. During the process, it is possible for the radio and the program to be temporarily out of sync, and you may see some apparent instability in the band panel in the entry window and/or brief flashing of the Split indicator in the entry window. This is normal and should clear within a fraction of a second.
    • A single receiver K3 can be used in SO1V or SO2R mode. A dual receiver K3 can be used in all program modes, including SO2V. In order to transmit from VFO B in SO2V or split mode, both VFOs must be on the same band (the K3 does not support cross-band split operation, although it is possible to receive on two separate bands simultaneously).
    • In a dual receiver K3, the radio's front panel Split indicator can be misleading. What it actually means is that the transmitter is using VFO B. In SO2V, if you use a function key while the keyboard/RX focus is in the VFO B entry window or if you click on a function key button in the VFO B entry window, the radio's Split indicator will be displayed even though you are not actually operating split. This is because you are transmitting from VFO B. To determine whether you are logging in split mode or not, look for the Split indicator in the Logger's entry window and not the indicator on the radio's front panel.
    • You can operate split from either entry window, but in order to transmit from the correct VFO and have the transmit and receive frequencies logged correctly, you must enter Split mode from the program (using Ctrl+S or Ctrl+Alt+S) and not by pressing the K3's Split button. If you are using "reverse split" (i.e. logging the contact in the VFO B entry window, listening to the subreceiver on VFO B and transmitting from VFO A) the Split indicator in the entry window will be displayed, but the K3's front panel Split indicator will not be displayed because the transmitter is using VFO A.
    • When you change transmit focus between entry windows, the Logger may display a Split indication temporarily in the entry window(s) while the program and radio status are temporarily out of sync in the process of changing. This condition is most likely to be seen when using LP-Bridge. It should only last for a fraction of a second. If the condition persists, check to see whether you are trying to operate in a mode the radio does not support (e.g. transmitting from VFO B with the two VFOs on different bands is not supported by the radio).
    • The stereo (grave accent - ` key, at the left end of the number keys row on many keyboards) toggles Sub on and off. It is identical to pressing the SUB radio button. To leave SUB on all the time, select Config > Sub Receiver Always On
      • If you have selected Diversity mode on the radio, toggling Sub off and on via ` or Alt+F12 will turn Diversity mode off
      • Logger preserves diversity reception on the K3 unless RX Focus changes to vfoB at which time the subrx will switch to vfoB (note that in diversity reception mode, both receivers are using VFO A, so full SO2V functionality is not available without leaving diversity mode)
    • K3 Subrx ON/OFF control by Logger
      • Independent of the state of Sub Receiver Always On:
        • changing RX Focus to vfoB turns the subrx ON
        • Ctrl+Shift+Up/Dn does not change the state of the subrx
        • Alt+F12 or ` toggles subrx ON/OFF if RX Focus is on vfoA (action disabled if RX Focus on vfoB)
      • Sub Receiver Always On checked:
        • clicking any vfo bandmap/avail. window spot or Ctrl+Up/Dn turns the subrx ON
        • changing RX Focus turns the subrx ON
        • if Sub Receiver Always On was unchecked and the user checks it, subrx is turned ON
      • Sub Receiver Always On unchecked:
        • If the TX & RX Focus is on VFOB and the RX Focus changes to VFOA ( \ keystroke), the subrx stays ON
        • If the TX & RX Focus is initially on VFOB and then RX & TX Focus is on VFOA (PAUSE, CTRL+Left or vfoA Bandmap/Available window spot click ), the subrx is turned OFF
        • if Sub Receiver Always On was checked and the user unchecks it, subrx is turned OFF
    • Ctrl+Alt+D command action:
      • If "Sub Receiver Always On" is ON and the Sub RX is ON, turn "Sub Receiver Always On" to OFF and leave the Sub RX ON
      • If "Sub Receiver Always On" is ON and the Sub RX is OFF, turn "Sub Receiver Always On" to OFF and leave the Sub RX OFF
      • If "Sub Receiver Always On" is OFF and the Sub RX is ON, turn "Sub Receiver Always On" to ON and leave the Sub RX ON
      • If "Sub Receiver Always On" is OFF and the Sub RX is OFF, turn both ON
    • Alt+F12 command action:
      • If the subrx is OFF - check "Sub Receiver Always On" and turn the subrx ON
      • If the subrx is ON - uncheck "Sub Receiver Always On" and turn the subrx OFF unless RX Focus is on vfoB
    • Digital radio modes FSK D, AFSK A and DATA A are supported
      • FSK D, AFSK A and DATA A are displayed in N1MM as RTTY, AFSK and PSK respectively
      • If the current contest allows digital modes, typing RTTY into the Entry window will put the radio into either RTTY (FSK D) or AFSK (AFSK A) mode depending on the selection in the Configurer's Digital Modes tab for the current digital engine
      • If the current contest allows digital modes, typing PSK into the Entry window will put the radio into PSK (DATA A) mode
      • PSK D is not supported by N1MM; the digital engines in N1MM cannot transmit PSK using the PSK D sub-mode
      • The K3's data sub-mode is stored in the firmware on a per-band basis
        • If VFO B and VFO A are on the same band, the data sub-mode will be the same in both VFOs
        • If VFO B and VFO A are on different bands, their data sub-modes can be different, but the firmware does not provide a way to poll the K3 for the VFO B data sub-mode. N1MM Logger will assume that the VFO B sub-mode is the same as in VFO A when the two VFOs are on different bands
      • Adjust audio levels in AFSK A and DATA A to give 4-5 bars on the K3's ALC meter. This allows the K3's firmware ALC to control power without clipping peaks and causing IMD. In PSK31 and other digital modes requiring high linearity, keep the requested power setting below 60 watts (AFSK RTTY can be safely used at 100 watts)
    • RIT control - When in RUN mode, the Up/Dn arrow keys change the RIT frequency (if the K3's RIT is turned on). When in S&P mode the radio frequency is changed
    • Using the program as a voice keyer with a K3 on SSB:
      • Option 1
        • Connect your microphone to the mic input of the sound card and the Line Out of the sound card to the Line In on the back of the K3
        • Set soundcard program to drive Line In
        • Select LINE IN with MENU:MIC SEL
        • Command Tx (or PTT or...) and adjust the MIC GAIN (which is now LINE IN gain) for proper audio level
      • Option 2
        • Connect microphone to desired microphone connection on the K3
        • Select MIC with MENU:MIC SEL
        • PTT and set Mic Gain
        • Connect sound card as described under Option 1
        • Now, if you set MIC+LINE ON then both audio sources will drive the K3. The MIC GAIN control will control the MIC GAIN only. LINE IN GAIN must be set when LINE IN is the selected source via MENU:MIC SEL
    • The K3 can accept PTT switching from several sources, including: a keying circuit from a serial or parallel port to the K3's PTT IN; PTT from a Winkeyer; RTS (pin 7) on the radio control port; or using "Radio PTT via command"
      • Do NOT use multiple methods of PTT control in parallel; in some cases doing so can leave the K3 stuck in transmit at the end of function-key messages. In particular, do NOT check "Radio PTT via command" if you are using RTS on the radio control port, or any other hardware PTT connection, to control PTT. Using "Radio PTT via command" together with hardware PTT control can cause the K3 to get hung up in transmit, so don't do it!
      • Procedure for configuring RTS on the radio control port: Start with the K3's CONFIG:PTT-KEY set to OFF-OFF; configure N1MM to control PTT from RTS on the radio control port (Port setup); set the K3's CONFIG:PTT-KEY to RTS-OFF
      • Warning: leaving RTS set to Always on with the K3's CONFIG:PTT-KEY set to RTS-OFF or RTS-DTR will cause the K3 to be permanently in transmit
    • The K3 accepts CW keying on DTR (pin 4) of the same COM port you're using to control the K3. This method can be used when other methods (e.g. Winkeyer or a keying circuit on a separate COM or LPT port) are not available
      • CW and radio control on the same COM port do NOT work in SO2R mode
      • CW on DTR does NOT work with some USB-to-serial adapters (e.g. Prolific chipset)
      • CW on DTR may be missing some capabilities and may have other undesired side effects - use at your own risk
      • Procedure: Start with the K3's CONFIG:PTT-KEY set to OFF-OFF; check the CW/Other box beside the radio control port in the Configurer and configure N1MM to use DTR for CW on that port; set the K3's CONFIG:PTT-KEY to OFF-DTR
      • Warning: leaving DTR set to Always on with the K3's CONFIG:PTT-KEY set to OFF-DTR or RTS-DTR will cause a permanent "key-down" condition
  • Cat Macro strings used to play back Radio # 1 internal K3 CW/data messages or DVR voice keyer messages
    • M1 = {CAT1ASC SWT21;}
    • M2 = {CAT1ASC SWT31;}
    • M3 = {CAT1ASC SWT35;}
    • M4 = {CAT1ASC SWT39;}
  • It is not necessary to program a function key to send RX; to the radio for a DVK stop. The program code sends RX; to the radio when the Esc key is pressed.
  • It is not necessary to include the K31; command in any K3 Cat Macro. The radio is in K31 mode all the time and sending this command just adds delay.