CAT4OM turns CAT control into a flexible station platform for amateur radio operators, connecting radios, desktop control, logging software, digital-mode applications, monitoring tools, and custom integrations through one coherent control layer.

A smarter control layer for your radio station

CAT4OM turns CAT control into a flexible station platform. Instead of letting every application open the radio directly, CAT4OM places a reliable control service between your radios and the software that uses them.

From a simple single-radio shack to a more complex multi-radio station, CAT4OM gives operators one consistent way to configure radios, share live state, manage command ownership, expose bridge protocols, and keep transmit operations under control.

Most amateur-radio software is designed to talk directly to a radio. That works well in a simple setup, but it becomes harder to manage as soon as the station grows. One program wants CAT control for logging, another needs PTT and split for digital modes, another displays status, and the operator still needs a reliable manual control surface.

CAT4OM changes that model. The radio is connected to CAT4OM, and CAT4OM becomes the shared control point for the rest of the station. Applications no longer need to compete for the serial port, CI-V interface, TCI endpoint, or radio network connection. They interact with a service that knows the radio, tracks its state, and applies the same station rules to every connected client.

What CAT4OM brings to the station

CAT4OM is designed for amateur radio operators who want reliable CAT control without losing flexibility. Radios are configured once in CAT4OM, then made available to the CAT4OM UI, logging software, digital-mode applications, monitoring tools, and custom integrations.

The result is a cleaner station layout: one service talks to the radios, connected clients receive live state, and write access remains controlled even when several applications are connected at the same time.

CAT4OM includes:

• multi-radio CAT control from one CAT4OM server;
• a dedicated UI for setup, monitoring, diagnostics, and live operation;
• support for serial CAT, Icom CI-V, TCI, and FlexRadio SmartSDR;
• compatibility bridges for TCI and Hamlib/rigctld clients;
• integration with WSJT-X, JTDX, Log4OM, and other CAT-capable applications;
• live radio state shared with multiple connected clients;
• command ownership for controlled write access;
• transmit-safety handling with interlock, watchdog, and failsafe behavior;
• TCI audio routing and native CAT4OM audio controls where supported;
• CW keying for supported TCI and Flex profiles;
• Radio Follower for synchronizing a second radio or SDR receiver;
• frequency offset support for transverters and IF-based station layouts;
• diagnostics, support reports, raw CAT tools, and per-radio wire logs;
• Management and Control password support;
• a local web status page for station monitoring.

Built for real amateur-radio workflows

CAT4OM can be used in several station layouts: a single HF transceiver shared by CAT4OM UI, Log4OM, and WSJT-X/JTDX; a main radio plus an SDR receiver following the same frequency; a transverter station where displayed frequency and radio IF frequency differ; or a multi-radio station where each radio has its own CAT profile, bridge configuration, and diagnostics.

The same design works for simple and advanced setups. A casual operator can use CAT4OM as a cleaner way to connect common applications. A power user can use it as a station-control hub with handbooks, bridge profiles, offsets, logs, API access, and multi-client ownership.

CAT4OM is not just another CAT cable endpoint. It is a station control layer designed to make the shack easier to expand, easier to monitor, and easier to integrate with the software operators already use.

A consistent experience across different radios

CAT4OM’s handbook-based model lets very different radios appear through one control surface. A Yaesu CAT radio, an Icom CI-V radio, a FlexRadio SmartSDR system, and a TCI-compatible setup do not use the same protocol internally, but CAT4OM presents them through consistent station concepts.

This is especially useful for operators who own more than one radio or who help maintain several stations. Once the CAT4OM model is understood, adding another radio is mainly a matter of selecting the right handbook and connection profile, then checking the capabilities that model exposes.

Explore the feature areas below to see how CAT4OM handles radio compatibility, multi-radio control, follower operation, diagnostics, power control, real-time architecture, and external integrations.