Epson MFJ-1278B manual Jmpf, Jmpz

MFJ-1278B MULTI-MODE APPENDIX G: JUMPER FUNCTIONS

Table G-1: Jumper Function (Cont.)

JMPF***	ON (default)		Disable Low Tone RTTY Demod
	OFF		Enable Low Tone RTTY Demod
JMPG***	ON (default)		Disable Low Tone RTTY Mod
	OFF		Enable Low Tone RTTY Mod
JMPH***	ON (default)		Disable Low Tone RTTY Mod
	OFF		Enable Low Tone RTTY Mod
JMPJ	ON		TX audio has flat response
	OFF	(default)	TX audio 6db/oct pre-emphasized
JMPK	ON		TX audio loopback to PTT
	OFF	(default)	(for Radio Port 2)
JMPL	ON		TX audio loopback to PTT
	OFF	(default)	(for Radio Port 1)
JMPR	ON		Analog audio loopback
	OFF	(default)	(for Radio Port 1)
JMPX	ON (default)		Speaker Transmit Tone Enable
	OFF		SpeakerTransmit Tone Disable
JMPY	ON (default)		Speaker Receive Tone Enable
	OFF		Speaker Receive Tone Disable
JMPZ	ON (default)		Speaker Connect Tone Enable
	OFF		Speaker Connect Tone Disable

*When JMP23 is shorted, it will RESET the MFJ-1278B. This means that all parameters will be reset to the default values. This is the same as removing the bbRAM battery except it is much quicker. DO NOT SHORT THIS JUMPER MORE THAN A COUPLE OF SECONDS, OTHERWISE BATTERY DAMAGE COULD RESULT!!

**MFJ offers an optional Real-time clock module (MFJ-43) that can be installed on the MFJ-1278B mother board. This clock keep the MFJ-1278B clock running all the time. You will not have to reset the clock everytime you turn the MFJ-1278B on.

***When these jumpers (JMP E, JMP F, JMP G, JMP H) are removed the MFJ-1278B will operate RTTY using the European tone standard, when the VB modem is selected. All four

jumpers must be removed in order to operate RTT using the European tone standard.