Epson MFJ-1278B manual Pactor Status Indicators, Amtor Detection in Pactor, Sta Con

MFJ-1278B MULTI-MODE BASIC OPERATION

AMTOR selective callsign in the "a_cmd:" MYSELCAL parameter. Furthermore, you must have the appropriate sideband, usually, LSB selected because unlike PACTOR, AMTOR is polarity dependent.

Amtor Detection in Pactor

The MFJ-1278B's Pactor continuously monitors the channel for Pactor packets, and for AMTOR call packets that match your AMTOR SELCALL. When PACTOR hears your AMTOR SELCALL, the TNC enters the "a_cmd:" AMTOR mode in an attempt to complete the link. After entry into the AMTOR mode the MFJ-1278B will automatically return to Pactor mode if the link is not established within 30 seconds. If the link is established, the MFJ-1278B remains in AMTOR mode for the duration of the contact, and for an additional 30 seconds after the link terminates.

PACTOR STATUS INDICATORS.

While in the PACTOR mode of operation, you have PACTOR mode Status Indicators avialable to you. These Status Indicators are comprised of the CON and STA leds. These leds react in different ways according to what is happening. Below is a table as to how the leds will act:

Status Indicator
STA	CON	Pactor Status
0	0	RX	N/A
		TX	N/A
		MON	The TNC is idling and has not monitored
			any information packets in the past
			second.
0	1	RX	Sending ack control signal
		TX	Last packet acknowledged
		MON	Received new packet
1	0	RX	Dupe rcvd; sending Request control signal
		TX	Received request control
		MON	Received dupe packet
1	1	RX	Info packet missing; sending request
		TX	Control sign missing; retransmitting
		MON	N/A