MFJ Enterprises Grandmaster MFJ-484 User Manual

Adjusts keying speed from 8 to 50 wpm. Pull out to record.

Sets dot-dash-space ratio. Pull out to combine memory addresses A and B.

Adjusts side tone pitch. Pull out to tune transmitter.

Adjusts internal speaker loudness. Turn fully counter-clockwise to turn off.

Enables automatic message repetition with variable delay. Pull out to activate.

Selects memory banks (1, 2, 3, K) for recording and playback.

Buttons A, B, C, D to directly address memory locations for recording/playback.

Stops memory operation. Can also be interrupted by tapping the paddle.

Show active memory address (A-D) and time delay status.

Internal 9V battery retains memory during AC power failure.

Basic steps for using the keyer, including power-up and paddle connection.

Detailed instructions for recording and playing back stored messages.

Steps and considerations for recording messages into memory addresses.

Instructions for playing back recorded messages and repeating them.

Important considerations for RF interference, battery saving, and adapter use.