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MFJ-1278B MULTI-MODE BASIC OPERATION
AMTOR Status LED Indicators
The CON and STA LEDs have special meanings in the AMTOR modes.
STA OFF CON OFF
This led combination indicates that Mode B is unlocked, and in STANDBY mode. Standby
mode is where the MFJ-1278B is ready to respond to Mode A or B "FEC" Amtor signals.
The MFJ-1278B will also print Mode S "SELCAL" signals, depending on the setting of the
SRXALL and MYSELCAL commands.
STA OFF CON ON
Indicates Mode B is locked in and is in the Idle mode. Broadcast text will be printed if in
receive mode. Also if in receive mode, the MFJ-1278B is receiving an AMTOR "idle"
signal. The other station is still being received ok, though he is not transmitting any text.
In Mode A, this signal could also mean that a send-receive CHANGE is pending or that the
sender is repeating a block.
STA ON CON OFF
This led combination indicates Traffic mode. The MFJ-1278B is currently sending or
receiving text.
STA ON CON ON
This is the phasing error mode. If in a Mode A contact, this means that the MFJ-1278B is
either trying to re-establish a link or is sending indication of a receive error.
If in Mode L or "Listen", the MFJ-1278B is hunting for a synchronization signal.
AMTOR OPERATION HINTS
To receive AMTOR, from the cmd: command line, type:
MODE AM <ENTER>
Now you should see the a_cmd: prompt. This mode is used for FEC type reception. To
enter Listen mode type:
LISTEN <ENTER>
To enter the ARQ listen mode to monitor ARQ signals type:
AMTOR <ENTER>
The STA and CON LEDS will light. When a station is 'zero beat' on frequency, the connect