CTR2-Quad

STATUS UPDATE

February 17, 2026

I have completed Quads in stock and ready to ship.

Try as I might, I just can’t get the shipping package for CTR2-Quad below 8 oz. For those that don’t ship a lot, 8 oz. is a “magic” number for USPS. Once a package crosses this threshold the shipping rate goes up. It’s only USD 0.35 for domestic shipping, but for international First Class, it’s a whopping USD 10!  For my international customers, I’ve had to add a special category for international shipping for CTR2-Quad, sorry!. 

International customers have three options:

1. Purchase the fully assembled and tested CTR2-Quad and select International Shipping. This adds USD 10 to the base price to cover the additional shipping charges.
2. Buy a CTR2-Quad Upgrade Kit instead. This kit ships without an M5Dial so the shipping package is less than 8 oz. This kit is intended for current CTR2-Dial or CTR2-Flex hardware users that want to upgrade to the CTR2-Quad by just swapping the M5Dial from their old unit, but you can buy a M5Dial locally and put the kit together and save the extra shipping charge.
3. Order your CTR2-Quad from Neil, G7UFO. He is gearing up to build and sell CTR2-Quads in his shop. He’s based in the UK so shipping costs are less for the UK and EU. He also offers a 3.7-volt battery option that I don’t offer due to shipping restrictions.

Thanks for your support and understanding!

73, Lynn 

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 upon 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, or the same 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. I have maps and configurations for various app here. I will be adding other 3rd-party apps to the configuration file as time permits.

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