How I made QRSS connections on KV

Visual CW, or slow telegraphy, this is how the abbreviation QRSS could be explained. This operation is mainly used on the 137 kHz VLF band. Few people know that QRSS also goes to KV, although with very little activity. I surfed a bit on the Internet and read about several frequencies where it is recommended to work with QRSS - 3585, 7037 and 10140 kHz. From the website www.QSL.net/on7yd I downloaded the programs and started testing reception first on 137.7kHz. I used the ARGO program from I2PHD/IK2CZL for reception and prepared the QRS program from ON7YD for transmission. Success came, I saw some connections on the monitor, I also heard some stations (TS-450SAT device and Pyramid antenna on 80 meters). Subsequently, I started testing for KV.

I found out that if on 137 kHz there is an effort to increase the power, then on KV there is an effort to use minimum power. I started broadcasting later with 5W, 1W and finally ended up with 300 milliwatts. It required a lot of patience, because a dot in QRSS3 mode lasts 3 seconds. The whole type challenge cq OM100TS K went for about 6 minutes. So you can imagine what kind of pace it is. I'll admit that I posted an incredible amount. Fortunately, the computer was broadcasting it for me. I also used "self-advertise" via DX cluster and success came.

After a year of irregular transmission under OM100TS on QRSS3, I managed to make 4 connections (1xOM, 2xDL and 1xG). It's no glory, but what followed after that literally shocked me. I received a picture via email from Australia from VK6DI. That day I was transmitting on 10140 kHz, powering 300 milliwatts into the AP8 vertical antenna. The result can be seen in the picture. Won't you try it?

Equipment on the receiving side VK6DI – FT-920, 40m dipole 9m above the ground. Power OM1II (OM100TS) approx. 300mW to vertical AP8. The type of device does not matter, but the condition is high stability and precise tuning. The width of the signal at such a speed, rather it should be said slowness, is about 1 Hz. The program has a scale of 100 Hz. It could easily happen that the opposing station can tune out of the given scale. These are very weak signals that we may not hear because they may be below the noise level. However, why the program evaluates them, you have to ask the mathematicians.

Spring OM1II