CTR2-Quad

January 1, 2026

CTR2-Quad is not yet in production. The firmware and enclosure design is complete but I’m waiting on the final PCB revision to arrive. Once it tests OK I’ll be able to add it to the shop. I hope to have it ready by mid-January. The final production unit may be slightly different than what is shown here (knobs, panel markings, etc.)

CTR2-Quad is the newest member of the CTR2 product line.With four programmable dual-function knobs, two programmable dual-function buttons, and separate jacks for CW paddles and your key and PTT switch, you’re sure to find the Quad to be the most useful accessory in your shack.

CTR2-Quad can run CTR2-Flex or CTR2-Dial firmware.

• Select the firmware you’d like your unit to boot into on delivery. You can change the boot firmware at any time from the Settings menu.

When running CTR2-Flex firmware, you can connect to, and control your Flex 6000/8000 series radio over WiFi using the Flex API. This mode is a true radio controller and includes a dashboard display where you can easily select and control many parameters on your radio. You can run any version of SmartSDR in parallel with CTR2-Quad. You can even have multiple CTR2-Uno, CTR2-Duo, or CTR2-Quad units connected to your radio at the same time, with each controlling a different slice.

When running CTR2-Dial firmware, the unit becomes a MIDI controller and can control any radio control app that supports MIDI control, including Marcus’ (DL8MRE) SmartSDR for iOS/MacOS, SDR-Control, FT-Control, TS-Control, and K4-Control. It can also be used with many Windows based control packages such as Thetis and SDR-Console, and many more.

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Please enter your call sign in the Add a note to your order section on the Checkout page so I can create your registration key.

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