4-2-9. CW zero-beat operation

1.When an optional filter is not used, tune the TUNING knob so that the receive beat frequency is approximate- ly 800 Hz.

2.When an optional CW filter is installed the simplest method to use is to adjust the TUNING knob for maxi- mum S-meter deflection.

4-2-10. FSK operation (Radio teletype).

In the FSK mode, the R-5000 is automatically set for "High Tone and Narrow Shift (170 Hz) operation.

The accompanying diagram illustrates the relationship between the carrier and the passband width. The demodulated AFSK (Audio Frequency Shift Keying) signal is sent from the REC jack on the front panel.

Frequency relationship

Notes:

1.An RTTY terminal is required to decode and display/ print the RTTY signal.

2.Because the digital VFO resolution is 10 Hz, the dis- played frequency may deviate 5 Hz from the space sig- nal frequency, but this should present no problem in acutual operation.

3.If you are using a low tone terminal unit, turn the tuning knob to lower the beat frequency then turn the IF SHIFT knob counterclockwise until the S-meter no longer fluc- tuates.

4.To receive a wide shift signal, set the SELECTIVITY switch or M1 or M2. To receive a wide shift, high tone signal, turn the IF SHIFT knob clockwise until the S- meter no longer fluctuates.

5.To receive AFSK (F2) signals, put the R-5000 in the FM mode.

4-2-11. Receiving FAX (Facsimile) and SSTV (Slow Scan Television)

Select the MODE key to match the receiving mode. Connect the modulator, decoder, or other terminal unit to the REC jack on the front panel. For more detailed informa- tion, refer to the instruction manual supplied with the terminal equipment.

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