Icom 7300 N1MM Logger Plus Setup

icom 7300 n1mmIcom 7300 N1MM Logger Plus: As I get ready to write this I have my N1MM Logger Plus already setup to use in the VOLTA RTTY Contest this weekend. I plan on making a few RTTY (FSK) contacts. N1MM Logger Plus is my contesting software. I’ll be the first to admit, I have only scratched the surface when it comes to using this software, but it is incredible stuff. It looks a little intimidating at first, but soon becomes familiar and easy to use. Just try it!

This Icom 7300 N1MM tutorial will get the Icom 7300 SDR connected to the software. You’ll still have to setup your Station Data under the Config menu and your macros will probably need edited, depending on the contest you want to operate in.

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Icom 7300 N1MM Logger Plus Setup

Two cables are used in this setup. One is the USB cable connected to the radios USB port and the other is a CI-V cable connected to the radios CI-V port. Use the CI-V for rig control and the USB for the soundcard. I have found this to be the easiest, because later on I added cw keying and RTTY (FSK) to the mix.

If you just want to use a USB Cable with HRD and operate some PSK31 or RTTY (AFSK), take a look at this video.

Step one, if you haven’t already, download and install the USB driver from Icom for your Icom IC-7300. USB Driver (Ver 1.2). Do not connect the USB cable until you have downloaded and installed the driver.

Step two, connect both cables.

Step three, turn your radio on and setup the Icom 7300 using the radio’s menu. Set the following menu items under MENU>SET>Connectors. These are the changes, leave everything else to default settings. I have included a couple of extra settings that will help later on when using PSK31, RTTY (FSK) and CW keying.

  • DATA MOD : Change to USB
  • USB Keying (CW): DTR
  • USB Keying (RTTY): DTR
  • Here are some screenshots.

Step four, if you don’t already have it, download and install N1MM Logger+. It’s free and you can find it here.

Step five, start N1MM Logger Plus.

  • Click on Config, then select Configure Ports, Mode Control, Audio, Other…
  • On the Hardware tab select the port that your CI-V cable is on and next to it choose the IC-7300 for the Radio.
  • To the right click on Set.
  • Make sure your Com port is setup correctly. Mine is 9600, N, 8, 1, DTR (Pin4)=CW, RTS (pin 7)=PTT, Icom Code (hex)=94, Radio Nr=1, PTT Delay=30 and PTT via Radio Command SSB Mode is checked. Footswitch (pin 6)=None and Radio Polling Rate=Normal. Click OK to close the window.
  • The next row under Port, choose the COM port your USB cable is connected to.
  • Under Radio choose None.
  • Next to that check Digi and also check CW/Other.
  • To the right click on Set.
  • Make sure this is setup correctly. Mine is DTR (pin 4)=CW, RTS (pin 7)=Always Off, Radio Nr=1, PTT Delay (msec)=30, Dig Wnd Nr=1, Allow ext interrupts and Winkey go UNchecked, Two Radio Protocol=None and Footswitch (pin 6)=None. Click OK to close.
  • Click OK to close the Configurer window. You should not see any errors. If you do, something is not setup correctly. Go back and verify the above settings and make sure your com ports are correct.

You should now be connected. The Icom 7300 N1MM Logger should be displaying the radio frequency at the top of the window next to the icon. See the video below for a visual.

If you do things differently with the Icom 7300 N1MM, or have any suggestions, please comment below. Always happy to hear from fellow Hams! 73 and good DX. – Rich, K0PIR


  1. Hello Richard
    may be you can help me
    i see several of your videos about ic7300
    i am using on 1er computer (windows XP)DX4WIN+MTTY and MMTTY+N1MM WITH MY IC756PRO3
    i had no problem with MMTTY + DX4WIN or mmtty+N1MM on FSK mode
    I have the 2sd PC with WIN7 PRO
    like you i am using two port one for CI-V and other for rx tx cw
    with my trx IC7300 i am enable to made FSK
    i read several of your video but no fsk here
    when i use MMTTY only is ok on fsk mode
    but when i am using it with DX4WIN or N1MM on RTTY MODE FSK have only a tune
    Tnx for reading my message
    maybe see you next week end on WAERTTY contest (my favorite mode after 6m band)
    73 de alain F6HRP/TM22P

    1. Author

      Hi Alain,

      I seem to recall the same problem at one time. My EXTFSK settings were wrong when I had that problem. FSK output should be DTR and PTT output should be RTS on mine. Are you using EXTFSK 2.0d? Did you check the settings again in this clip? https://www.youtube.com/watch?v=ZCkiuzAMuZI From about 3:40 in the clip it shows the setup.

      Make sure the radio is in RTTY mode.

      Try to send a test and if you just hear a tone, try it again and see if it works. I sometimes have a problem with my USB and the first test doesn’t always work, I just hear a tone. After the first test then it works everytime. This glitch happens to me with CW sometimes too.
      Did you get it? Hope to hear you on this weekend.

  2. Do I understand that if you want to do CW keying with n1mm logger you need the CI-V cable? Or is the CI-V cable Just for cat control or the USB cable for CW keying?

    1. Author

      Hi Jasper,

      Great question! I suppose you could use the radio manually and not have CAT control. Just use the one USB cable for keying.

      The CI-V cable I use for the Radio in N1MM Configurer and the USB cable I use for DIGI and CW/Other. So yes, we are on the same page 🙂 The CI-V controls the radio and the USB is for com port (CW) keying.

      I just looked at mine and I may have tried the CI-V for CW, but you’ll get a message saying the Prolific USB to serial isn’t recommended for CW keying (Or something like that). I better stick with what I have. LOL

      Thanks for commenting, did you get it working?

      Best 73,
      Rich, K0PIR

  3. Hi Richard Ive followed your directions to get N1MM up and running unfortunately when in cw mode my radio puts a continuous cw signal that cannot be switched out from the radio controls any suggestions would be appreciated.
    Many thanks for all your posts they very useful especially for new IC7300 owners

    1. Author

      Hi rik,

      Nice to hear from you and thank you for the comment and joining the website.

      That usually is an issue with RTS or DTR. Verify these in the radio:

      DATA MOD : Change to USB
      USB Keying (CW): DTR
      USB Keying (RTTY): DTR

      In N1MM verify the settings for your COM port (USB cable). See https://youtu.be/HbkEOsKwNAk?t=2m35s
      DTR (pin4) = CW, RTS (pin7) = Always off

      If this isn’t the solution, let me know what cables you are using. One or two?

      73’s Rich, K0PIR

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