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. 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

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I'm an Amateur Radio enthusiast. I love the hobby and experimenting with radios, antennas and software. On my YouTube channel I upload videos on the Icom 7300 and Icom 7610 along with Ham radio software programs. I hope to inspire people to try new things in Amateur Radio.

19 Responses


    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

    • K0PIR says:

      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. Jasper Jansen says:

    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?

    • K0PIR says:

      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. rik says:

    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

    • K0PIR says:

      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

  4. Les says:

    Is it possible to use the spectrum scope in n1mm, using a usb cable and ci-v cable on a IC-7300 in rtty mode?

    If so, how do you setup everything? I’ve saw several youtube videos on the IC-7300 and n1mm but nothing on the above question.


  5. John KE0YI says:

    I’m curious about the details of how you have the CI-V cable connected between the IC-7300 and your computer. Are you connecting the IC-7300 remote jack directly to a USB port on your computer, or are you using an interface device such as the Icom CT-17?

    I was able to get MMTTY working using FSK, but am now working on getting N1MM Logger+ working as well.

    Thank you!

    • K0PIR says:

      Hi John,

      Nice to hear from you and thank you for commenting.

      Yes, the CI-V cable is a USB on one end, here is one I bought: http://amzn.to/2oRowa2
      No interface is needed.

      Initially I was using two cables and it worked great. When N1MM Logger came out with the Spectrum-Waterfall display, I used one USB cable. The spectrum waterfall requires 115200 baud rate and the USB. To get it and have MMTTY send FSK I used Virtual Serial Port Emulator (VSPE) to split the single COM port. It worked okay and others report it works good. I still preferred the two cable solution, but I wasn’t getting the spectrum waterfall. If you find VSPE works good for you I would go that route. There are other virtual com port managers available too, but I didn’t try them.

      I did a couple of videos on the one cable solution with VSPE, see: https://youtu.be/UtB-DfBMmB0 and https://youtu.be/YaOo3D3NAlQ

      Either way works with the 7300, N1MM and MMTTY.

      Let me know how it goes. Thank you again.

      Rich, K0PIR

  6. John KE0YI says:

    I will definitely give the VSPE software a try. I also have a second monitor that could be hooked up just to show the N1MM spectrum display.

    Thanks again!

  7. John KE0YI says:

    Got VSPE installed and have N1MM Logger+ working with MMTTY now with the full screen spectrum display. Will try to find some time to make a few contacts later this week.


  8. Andrew Obrien says:

    How do you “pair” a virtual port with the physical port that is installed by Icom drivers My software is VSPM, it is easy to create virtual ports and pair them but , for example, if the Icom 7610 or 7300 is on Com Port 6 and you want a SECOND application to share frequency read out, how do you do this? Example Commander and CW Skimmer (Omni Rig) both communicating frequency info to/from the ICOM ?
    Andy K3UK

    • K0PIR says:

      Hi Andrew, great question, do you have Unlink from [REMOTE] set in the radio under CI-V? With that setup I have done this with two cables, but I am not sure about using the virtual software or how well it will work.

      Regarding the Icom 7610, it splits the port, one (A) is for CI-V and the other (B) is for Data/FSK. The Data/FSK (B) is not used for rig control.

      I have used VSPE and when I create the virtual port I can use two different software programs for rig control. DXLab Commander and HRD rig control seem to work somewhat. They will both control the radio. I’m not sure how well it will work in the real world, but I can get the connections.

      I hope this helps.

      Rich, K0PIR

      P.S. I like using two cables for things like that. I did it with ACLog and WSJT-X. Worked great.

  9. AL says:

    Can I use this logging software “together” with my Icom RSBA1 software?

    • K0PIR says:

      Hi Al,

      It’s nice to hear from you and that’s a great question.

      You can use it on the remote computer, but I don’t think it’ll connect to RSBA-1 and sync freq and mode. Not that I am aware of anyway.

      It would be very interesting if we could. You could check the RSBA-1 Group forum.

      Rich, K0PIR

  10. Udo says:

    Hallo Rich ,
    ich habe den IC7300 und N1MM Logger in Betrieb . Dazu ist ddie USB Schnittstelle mit wsjT-X beschalten . Die QRG wird über die Remote Schnittstelle übertragen . Hier ist auch FSK CW installiert .
    Nun möchte ich aber die QRG auch noch in meiner PA Auswerten für die Bandumschaltung .
    Dazu brauch ich aber eine CI-V Schnittstelle ..
    Hier liegt aber mein Problem … Eine weitere VI-V Schnittstelle ! ???
    73 es 55 de dl1pi

    • K0PIR says:

      Hello undo,

      Nice to hear from you and thank you. I wish I could translate that😫

      I hope all is well with you and yours, please take care and best 73!

  11. Steve Cox says:

    Allow me to help with Udo’s post – It reads:
    Hi rich
    I have the IC7300 and N1MM logger in operation. For this purpose, the USB interface is wired with wsjT-X. The QRG is transmitted via the remote interface. FSK CW is also installed here.
    Now I would also like to use the QRG in my PA for band switching.
    For this I need a CI-V interface ..
    But here is my problem … Another VI-V interface! ???

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