Epson manual MFJ-1278B MULTI-MODE Introduction

MFJ-1278B MULTI-MODE INTRODUCTION

The new "packet collision prevention" features -- Prioritized Acknowledgments and Slottime are installed. This new technology helps prevent many packet collisions inherent in the current packet protocol.

The EPROM containing the MFJ-1278B firmware, previously 512K bits, has been expanded to 1 Megabits giving the MFJ-1278B twice the room to grow in.

You also get a Key Paddle input jack so you can use your MFJ-1278B as an Iambic Keyer or Memory Keyer. The ten user-programmable memory buffers are provided for use with the contest memory keyer function. In addition you also get contest serial numbering and a random code generator.

A speaker jack lets you plug in a speaker and monitor transmit and receive audio and CW side tone as it is received and transmitted by your MFJ-1278B. The speaker output also provides for the packet connect signal alarm.

A Centronics compatible parallel printer port (DB-25) lets you directly interface your printer to the MFJ-1278B for printing received text, Packet, FAX and SSTV pictures.

The MFJ-1278B provides dual radio ports for HF and VHF operation. These dual radio ports let you connect 2 radios at the same time in any combination. Independent transmit audio output controls provide even further flexiiblity. This will enable the user to individually adjust the audio output for each radio port. The radio ports are not dedicated to either VHF or HF operation. They are totally independent of each other.

You also get a Threshold control for optimizing your demodulator filter for the different modes of operation. This is a very useful tool when trying to receive signals during bad band conditions.

A 20-pin header provided for the MFJ-1278B to operate packet at 2400 or 9600 baud packet by simply plugging in an optional modem board. The MFJ-1278BT already has a 2400 modem installed. If your MFJ-1278B does not have the 2400 modem installed, it can be purchased separately (MFJ-2400) and installed by you. With the 2400 modem installed, your MFJ-1278B can operate 300, 1200 and 2400 packet. You may also purchased the MFJ-9600 modem board that allows the MFJ-1278B to operate at 9600 baud packet.

The list goes on.... This is just a few of the features available. In short the MFJ-1278B offers you tons of features that the other multi-mode controllers just can't match. This in conjunction with the new MFJ Multicom (TM) software will put you leagues ahead in the ever changing field of Ham Radio Digital communications.