N1MM Logger - Setting up the Digital Interface for 2Tone

In order for 2Tone to run in N1MM Logger, you must have 2Tone.exe and 2Tone.ini somewhere on your computer. The only other requirement is that you have XMMT.ocx on your computer as well. XMMT.ocx is the Active X control that allows 2Tone to work. It gets placed on your computer automatically when you update to the latest version on N1MM Logger and you never have to worry about it again.

You can download the latest version of 2Tone here on rttycontesting.com (thanks to David, G3YYD, for allowing this) or from the N1MM Logger Digital Yahoo Group website.

1. Download the latest version of 2Tone if you do not already have 2Tone.exe and 2Tone.ini on your PC. 2Tone.exe and 2Tone.ini are in the zipped file you download. The file will be called 2Tone x.xxx.zip, where x is the version number (such as 2Tone 3.03a.zip). In the zipped file there are also two PDF help files along with the release notes and an mmtty.ini file. Unzip the entire contents of the zipped file into a directory by itself on your hard drive. It is suggested you use the location C:\2Tone so you can find it easier. (You will have to create this new folder in the unzip process.) Once you have unzipped the contents of the zipped file onto your hard drive. Locate the folder and open the file called 2Tone first install.pdf and read it. Don't be concerned about the first step because you have already placed the files into a folder that is not MMTTY.


2. Open N1MM Logger and the Digital Interface window if they are not already opened. Go to the Setup menu and select Open Add. RX Window (4 Avail.)


3. The DI1 RX Window 1 will open. Go to the Window Type pull-down menu and select MMTTY. (Note there is no 2Tone option here which is why you select MMTTY even though this receive-only window will be used for 2Tone as shown in the following steps). Do not Save yet as you are not finished with this screen. Continue to the next step.


4. The MMTTY Setup Path is shown as Not set. Highlight and clear Not set so the box is empty. Manually type in the Path where you unzipped 2Tone.exe. If you unzipped it into C:\2Tone as suggested in Step 1, then the path you type is as shown below on the right. Leave all other options as shown and click Save.


5. A window appears that says the window needs to be closed. Click OK. The DI1 RX Window 1 will close automatically.


6. Reopen the DI1 RX Window 1 by going to Setup in the Digital Interface window and selecting Open Add. RX Window (4 Avail.).


7. When DI1 RX Window 1 opens, drag the tuning indicator into an open place on your screen and click on the Setup button. (Do not be alarmed if nothing is happening in DI1 RX Window 1 or in the DI1 RX1 2Tone tuning indicator.)


8. The 2Tone Settings window will open. At the top, select the Soundcard you will be using to receive RTTY. Also select the soundcard channel used with Left, Right or Mono. (If you are unsure, try Mono first. You can change it later if needed.) Set the Mark and Space frequencies. It's possible the frequencies shown will be 1275 Mark and 1445 Space. These are standard low tones. If you use standard high tones, click the button that says High and the Mark and Space frequencies will automatically go to 2125 and 2295 respectively. If you use AFSK and use other tones such as 1500 and 1670 Hz or any other combination that results in 170 Hz shift, put those frequencies in the Mark and Space boxes. Since I use FSK and standard high tones, I use 2125 and 2295. For Operating Mode, select Normal Decode.

Transmit Setting, AFSK TX and Pseudo FSK TX options are not used since this is a receive-only window. When finished making selections, click OK.


9. Resize and rearrange the RTTY windows and tuning indicators as needed. In the example below, the main Digital Interface and associated MMTTY tuning indicator (shown as RTTY Engine 1) are to the left. The first receive-only window called DI1 RX Window 1 and it's associated tuning indicator for 2Tone (shown as DI1 RX1 2Tone) are to the right. If you have your radio on with an antenna connected and set to receive RTTY, you should see some noise characters displaying in the RTTY screens and activity in the tuning indicator screens as shown. If not, you will need to troubleshoot why you are not receiving. If you are not receiving, go back to Setup on the DI1 RX1 2Tone tuning indicator and try changing the soundcard settings.

It's possible the tuning indicators show activity but no print in the RTTY windows. This could be due to Squelch settings in both MMTTY and 2Tone. You can disable Squelch in MMTTY with the SQ button on the RTTY Engine 1 tuning screen. To disable Squelch for 2Tone, go to the Setup menu on the DI1 RX1 2Tone and uncheck Squelch On.


10. Tune to a RTTY station. You should be receiving RTTY in both RTTY windows. You will notice that with 2Tone, AFC is always on. However, the tuning indicator is such that tuning in RTTY signals is actually quite easy. You will notice as you tune in a RTTY signal, the short vertical bars in the 2Tone tuning indicator will move closer to the longer vertical bars which represent Mark and Space. When the short vertical bars are in line with the longer vertical bars, the signal is tuned in. In the lower left-hand corner of the 2Tone indicator window, it shows xxHz, where xx is the frequency in Hertz that the signal is off frequency by. Once the short vertical bars and in line with the longer vertical lines, it should show 0Hz when you are perfectly tuned. (Note:  When a signal is perfectly tuned in with the 2Tone indicator and it shows 0Hz at the bottom of the screen, you may notice the tuning indicator in MMTTY shows slightly off frequency. And if you have AFC enabled in MMTTY, it may not show 2125 Hz Mark or whatever the mark is suppose to be. If this happens, go to MMTTY Setup and change the soundcard clocking on the Misc tab screen from 11025 to 12000 Hz. This should bring the MMTTY indicator closer in line with what you see in the 2Tone indicator.

It's possible to have as many as four receive-only windows off the main Digital Interface window. So you can open up any combination of MMTTY and 2Tone screens up to a total of five (main Digital Interface and four receive-only). Each new receive-only window is opened the same way as the first one shown in Step 6. It is strongly suggested that you place either 2Tone or MMTTY in separate folders on your hard drive for each new receive-only window enabled (each folder of 2Tone needs only 2Tone.exe and 2Tone.ini and each folder of MMTTY needs only mmtty.exe.) For example, you would have folders at C:\2Tone, C:\2Tone-2, C:\2Tone-3, etc. or one folder called 2Tone with subdirectories called 2Tone-2, 2Tone-3, etc. In the same manner, you could have folders called C:\MMTTY, C:\MMTTY-2, etc. or one main MMTTY folder with subdirectories. Since 2Tone appears to be a better decoder than MMTTY, you may want more 2Tone receive-only windows than MMTTY, but it's up to you.

At this point, everything should be working. With the cursor in the Entry Window of N1MM Logger, you should be able to live at the keyboard and transmit RTTY using CTRL-C. You are now ready to prepare your RTTY messages. Go back to the Quick Start Index here or continue on with Set up RTTY Messages here.