Curtis Computer kb4900 User Manual

Lists key functionalities of the KB-4900, including Morse, Baudot, and ASCII transmission capabilities.

Details operational aspects, microprocessor, EPROM, RAM, and other core components of the keyboard.

Explains the two modes for random Morse code practice: true random and pseudo-random.

Lists keyboard commands for selecting Morse, Baudot, ASCII, and random code practice modes.

Defines operational speed ranges for Morse, Baudot, ASCII, and specifies the sending buffer size.

Describes memory capacity, partitioning, and lists pre-programmed messages available.

Details sidetone controls, volume, pitch, and front panel adjustments.

Explains keyboard layout, manual keying, and paddle keying connections and features.

Lists integrated circuits, inputs, outputs, power requirements, size, and weight.

Describes the various connectors and ports available on the rear panel.

Connects transmitter and keys for CW mode operation, including PTT and keyline setup.

Connects for Baudot/RTTY transmission, detailing loop circuit and FSK keying.

Details ASCII transmission, including upper/lower case and CAPS LOCK function.

Explains the two modes for random code practice: true random and pseudo-random.

Covers initial setup, loading message memories, and preset serial number.

Explains real-time clock setup and how to use fixed messages.

Details message repeat delay, delete function, hold transmission, and system reset.

Advises on diagnosing issues, component substitution, and contacting support.

Outlines warranty terms, duration, and responsibilities for repairs.

Discusses software updates, EPROM replacement, and potential changes.