MFJ CMOS Keyer
 

1) I have an MFJ keyer, no model number. It simply says "MFJ CMOS
Keyer" on the front. It has a built in paddle, of sorts. I am looking
for a schematic for the keyer. It uses a Curtis 8043 chip.

2) Does anyone have the pinouts for the Curtis 8043 chip?

Tim AA6DQ

MFJ CMOS Keyer
 

On 4 Sep 2006 10:31:13 -0700, "Nobody" uttered:

}1) I have an MFJ keyer, no model number. It simply says "MFJ CMOS
}Keyer" on the front. It has a built in paddle, of sorts. I am looking
}for a schematic for the keyer. It uses a Curtis 8043 chip.
}
}2) Does anyone have the pinouts for the Curtis 8043 chip?
}
}Tim AA6DQ

Apparently the 8044 is a "close pin for pin substitute" for the 8043

See :- http://users.ox.ac.uk/~malcolm/radio/8044screen.pdf

Hth

Mart

MFJ CMOS Keyer
 

Mart wrote:
On 4 Sep 2006 10:31:13 -0700, "Nobody" uttered:

}1) I have an MFJ keyer, no model number. It simply says "MFJ CMOS
}Keyer" on the front. It has a built in paddle, of sorts. I am looking
}for a schematic for the keyer. It uses a Curtis 8043 chip.
}
}2) Does anyone have the pinouts for the Curtis 8043 chip?
}
}Tim AA6DQ

Apparently the 8044 is a "close pin for pin substitute" for the 8043

See :- http://users.ox.ac.uk/~malcolm/radio/8044screen.pdf

Hth

Mart

Thanks Mart.

Tim AA6DQ