CTR2-Flex Firmware Manual – v2.05.01a
April 15, 2026 This update includes additional information and a warning about using the 3.5mm input jacks on CTR2 units There is a separate manual for CTR2-Dial firmware. You can…
CTR2-Dial Firmware Manual – v2.05.01a
CTR2-Dial firmware is now included in CTR2-Flex v2 firmware. You can view the operation manual for CTR2-Dial here. To download a copy of it, press the Download button below. April…
CTR2-MIDI Operation Manuals – v2.01.01a
Read or download the latest operation manual for CTR2-MIDI here
Download the Latest Updates – April 15, 2026
Find the latest CTR2 firmware updates here
CTR2-Quad Hardware Manual – v1.02
M5Dial based CTR2 hardware is available in three different configurations. All three variations run the CTR2-Flex firmware that provides direct control of your Flex radio over WiFi using the Flex…
CTR2-Duo Hardware Manual – v1.01
M5Dial based CTR2 hardware is available in three different configurations. All three variations run the CTR2-Flex firmware that provides Bluetooth/USB MIDI control for third-party apps like SmartSDR for iOS, SDR-Control,…
CTR2-Uno Hardware Manual – v1.01
M5Dial based CTR2 hardware is available in three different configurations. All three variations run the CTR2-Flex firmware that provides Bluetooth/USB MIDI control for third-party apps like SmartSDR for iOS, SDR-Control,…
Domestic Postage going up April 26, 2026
I’ve received notice that USPS domestic parcel rates will be going up 8% on April 26 due to increased fuel costs. This means that flat rate shipping for CTR2 products…
CTR2 2026 Product Line
2025 in Review I’m the first to admit that CTR2 products have gotten confusing over the years. At the first of 2025, I introduced CTR2-Dial, a MIDI controller based on…