This is not intended to be an “etched in stone” indication of how to operate a RTTY contest, so please don’t take it that way! Whatever works the best for you, is what you should do, as long as it allows your participation to be fun! These hints were obtained from RTTY contesters, world wide, and only reflect how they try to make their operation more efficient! The more efficient “we” make our contest exchanges, the more efficient we make it for all involved! Band conditions certainly play an important part in the exchanged data, so establishing a “different” buffer could make your exchange more efficient in “not so good” band conditions! I’ve archived a copy that I believe could be usefull for beginners.

That really speeds-up the RTTY contest QSOs.This document was originally posted by K4WW on but this domain has expired since some months at time writing. I also discovered that you can click and “grab” not only callsigns, but exchange information (Name and State/Province in this contest) using the mouse. The one benefit of this problem is that I took some time and read the MMTTY documentation. So I clicked the button and got back to two radios. Well, I can’t imagine anyone using AFSK RTTY that would not want to do that, and I doubt that I ever changed that button setting (on purpose). Buried far down in the document was a comment that you must turn ON the “NET” button in the dislayed MMTTY Engine screen if you are using AFSK and want to Transmit and Receive on the same frequency. I ran the contest with one radio for a while, but also pulled-up some MMTTY documentation. But when I would transmit, the Tone appeared to change to the default 2125 Hz, and I could see no way to change that setting.

To use AFSK, I set the Receive Tone frequency to 1445 Hz instead of the actual 2125 Hz used in true FSK. I finally discovered that my Transmit frequency was offset from the Receive frequency. The IC-7600 was using the AFSK, Since I only have the USB interface to the radio for RTTY, I cannot use the internal FSK demodulator. The difference between the radios is that one was using true FSK and the other was using AFSK from an internal sound card. The other Radio, an FTDX-3000 was working fine. I stopped and took a few minutes to see what the problem was.

I have used this several times in the past, and it worked well. The Radio was setup using N1MM+ with the common MMTTY RTTY Engine. Nobody could hear me with one radio (IC-7600) using an all-band dipole/doublet that normally works quite well for US contacts. In this one, I setup for RTTY and started the contest. I participated in the NAQP RTTY contest this weekend.

Rtty frequencies list