Epson MFJ-1278B manual Baudot Rtty Operation Hints, Mode HB,75

MFJ-1278B MULTI-MODE BASIC OPERATION

Note: If the MFJ-1278B is not in transmit mode (i.e. in receive mode), then in order to initiate transmission from a buffer, you must type CONTROL-Ttwice then enter a number for the buffer. You can tell if the MFJ-1278B is in transmit mode, by observing the PTT LED on the front panel. If PTT LED is lit, MFJ-1278B is in transmit mode.

Once the MFJ-1278B completes the transmission, press a CONTROL-R. When the MFJ- 1278B receives the CONTROL-Rfrom the computer, it will return to receive mode. When the MFJ-1278B is in receive mode, note that the PTT and STA leds are not lit.

Some terminal programs do not support the CONTROL-Tor CONTROL-Rcharacters. The MFJ-1278B require the CONTROL-Tand CONTROL-Rcharacters to swtich between transmit and receive modes.

If the terminal program does not support the CONTROL-Tand CONTROL-Rcharacters, you can re-assign the ASENDCHAR and ARCVCHAR commands in the MFJ-1278B to other keys. See Chapter 6 of this manual for detail on the ASENDCHAR and ARCVCHAR commands.

Note: When operating RTTY or ASCII it is recommended that you operate at about 50% of full power. This is to prevent damage to the finals of your radio. Some modern radios allow operation of RTTY and ASCII at full power. You should consult the owner's manual of your radio to see what is the acceptable power level at which your radio should operate.

BAUDOT RTTY OPERATION HINTS

In this section we will cover a few of operative hints for the RTTY and ASCII modes.

To set the MFJ-1278B to RTTY mode type:

MODE HB <ENTER>

for HF operation. This sets the MFJ-1278B to the standard RTTY mode that most amateurs use. On HF this is 45 baud or 60 wpm. As mentioned earlier, if you do not designate a speed after the two letter, the MFJ-1278B selects the default of 45 baud.

Some RTTY bulletin boards use 75 baud or 100 wpm, in which case you should type:

MODE HB,75

The number after the "HB" sets the character transmission and receive speeds in baud. Some operators will refer to the speed as words-per-minute. However, the normal terminology is to refer to the speed in BAUD RATE. Although speeds up to 300 baud are available, only 45