Epson MFJ-1278B manual Radio Connector Pin Diagram

MFJ-1278B MULTI-MODE RADIO INTERFACING

RADIO PORTS CONNECTION

The MFJ-1278B gives the user two (2) radio ports. This allows for both FM and HF operation from either radio port. Since the radio ports are independent of each other, the user is not restricted to FM or HF operations. The radio ports on the MFJ-1278B allow an FM radio and an HF radio to be connected at all times. In fact you can have any combination of HF radios or VHF radios connected to the radio ports at any time. The pin designations for both radio ports are exactly the same. See Fig. 3-1 for the radio port pin designations. The radio ports on the MFJ-1278B are switched by using the RADio command. We will discuss radio port switching in the next chapter.

Once the user obtains the proper microphone connector (not provided), use Fig. 3-2 to wire the 5 pin DIN cable (provided) to the microphone connector. If two radios are to be used with the MFJ-1278B, you will need to wire two radio cables.

You may obtain the specific pin designations for your radio's microphone connector from your radio's manual. Appendix A at the end of this Instruction Manual lists pin assignments for some of the most popular radios. The accuracy of this information is not guaranteed. You should verify this information with your radio manual.

Fig. 3-2 Radio Connector Pin Diagram

Two 5-pin male DIN cables are provided with the MFJ-1278B. These cables have a 5-pin DIN connector on one end, with the other end of each cable being unterminated. The unterminated end of each cable is for wiring the appropriate microphone connector which matches your radio.

CHECK THIS CABLE WITH AN OHM METER TO IDENTIFY EACH WIRE BEFORE WIRING IT TO THE MIC CONNECTOR THAT FITS YOUR RADIO.