RECEIVE AND TRANSMIT 4
DRTTY (FSK) operation
➀Connect a terminal unit as at left.
➁Select RTTY (or
➂Select the desired FSK tone/shift frequencies and keying polarity as below.
➃Set the desired frequency with the main dial.
•Use
➄Operate the connected PC or TNC (TU).
PRESETTING FOR RTTY
Tone frequency
➀Push [DISPLAY] for 2 sec. to select quick set mode. | |
➁ | Q2 |
| RTTY |
| RTTY mode is selected. |
S1 3 5 7 9 | 20 40 | 60dB | VFO A |
PO | 5 | 10 | CH |
M1 SPL A/B A=B
RTTY | RTTY mark frequency |
| is set to 2125 Hz. |
Push [MENU] one or more times to select |
RTTY TONE; then rotate the main dial to select |
the desired tone frequency (p. 48). |
Shift frequency
➀Push [DISPLAY] for 2 sec. to select quick set mode.
➁Push [MENU] one or more times to select Q3 RTTY SHIFT; then rotate the main dial to select the desired shift frequency (p. 48).
Q2 RTTY TONE
RTTY
Q3 RTTY SHIFT
2125 and 1615 Hz are available.
RTTY shift frequency is set to 170 Hz.
170/200/425 Hz are available.
RTTY keying
➀Push [DISPLAY] for 2 sec. to select quick set mode.
➁Push [MENU] one or more times to select Q4 RTTY KEYING; then rotate the main dial to select the desired keying polarity (p. 48).
RTTY | RTTY keying is set to |
| ‘normal’. |
| normal: key open=mark |
| key close=space |
Q4 RTTY KEYING | reverse: key open=space |
| key close=mark |
DRTTY (AFSK) operation
➀Connect a terminal unit as at left.
➁Select SSB (LSB) mode with [MODE].
•Generally, LSB is used on the HF bands and FM is used for the VHF band.
➂Select the desired FSK tone/shift frequencies and keying polarity as below.
➃Set the desired frequency with the main dial.
•Use
➄Operate the connected PC or TNC (TU).
RTTY reverse mode
Received characters are occasionally garbled when the receive signal is reversed between MARK and SPACE. This reversal can be caused by incorrect TNC connections, settings, commands, etc.
To receive a reversed RTTY signal correctly, select åRTTY (RTTY reverse) mode.
➥Push [MODE] for 1 sec. (while RTTY is selected) to select åRTTY mode.
•Check the receive signal.
PRESETTING FOR RTTY Tone frequency
Same as above.
Shift frequency
Same as above.
RTTY keying
Same as above.
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