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However, during major events, such as CQWW RTTY, bandplans will expand such is the popularity of RTTY. RTTY contesting frequencies are between the markers below. This should give you a pretty good receive standard to start with, but no doubt you will find settings that suit you anyway. Also, select twin peak filter in the MMTTY set-up, and switch off NET and AFC. On the MMTTY window, make sure the BPF is on and the Notch filter is in the middle of the passband. Make sure that the tuning rate is slow, select a narrow roofing filter and also switch the AGC to FAST. With practice it is easier to tune by ear, although I must admit that being a musician makes this easy and not everybody can do that. Tuning RTTY is normally achieved through the waterfall or Lisajous scope display or the two tuning lines, all shown in the MMTTY engine. Some people prefer a wider bandwidth to make tuning easier. My transceiver is the FT2000 and I can vary the selectivity on that to something acceptable to me. I don’t always have that in circuit as the selectivity can be too narrow when contesting.
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I use around 300Hz bandwidth and also use an external DSP unit that I can put in circuit. I prefer FSK using high tones, 2125/2275Hz with a narrow filter. Most transceivers have FSK built in, or a pseudo version of pure FSK, or you can use AFSK. Operating with computers is relatively easy now, once the software is set up. Setting up equipment was difficult, but it was all great fun! They were called cycles in those early days, not Hertz.Ĭontests in those days were rare, only about two or three a year and in a 48 hour contest we rarely made more than 150 contacts, even attaining 150 was considered a good score. We also used 850Hz shift and had to modify our own VFO (no commercial transceivers in those days!) and set it to the nearest few cycles. We had to identify at the end of each RTTY transmission using CW, and finding RTTY machinery became a way of life! When I first came into RTTY, in 1961, it was all machinery, paper, oil and grease and lots of noise! It really has become “just another mode” now that we have computers ruling our lives! RTTY contesting has changed enormously over the last 50 years.