ST Modular RADIO: An Analog FM Radio Module with Automatic Channel-Search and CV Control

ST Modular has introduced an impressive Eurorack module that delivers an analog FM radio with automatic channel search and CV control. The ST Modular RADIO module supports a frequency band of 83.5-114 MHz, and employs automatic noise suppression to ensure a better signal reception quality.

Using the CH- and CH+ buttons, the automatic channel search feature allows for quick channel changes. However, the module's search feature is activated via a patch of trigger or gate inputs. The search function evaluates the signal quality, and once a good signal is detected, the search ends and the radio signal is outputted from the OUT socket.

If you want to change to another radio station, the channel-search is also accessible via CV. The RST button resets the search to the lowest frequency, which is helpful if you want to return to searching for signals. There's a jumper on the back of the PCB that lets you route the CH- CV input to RST.

The ST Modular RADIO module also features two volume buttons that allow for quick level adjustments with two LEDs which indicate a trigger or gate signal is applied. There's an active gain stage adjustable via trimmer to raise the module's maximum volume to modular levels. The patch-cable connected to the OUT socket acts as an antenna, so it's best to choose a long cable and move it around until you receive the best signals.

The RADIO module is an impressive tool for processing radio frequencies into your Eurorack setup. The illuminated ST Modular logo also adds to the visual appeal of this exciting module. Overall, it's a never-ending sound source and a fabulous addition to any setup. Get your hands on the RADIO module today and bring the magic of analog FM radio into your modular world.

Example Usage

If you are new to using the ST Modular RADIO, a great way to get started is by using the automatic channel-search function. Simply press the CH- and CH+ buttons to activate the search, and the module will automatically tune to the next available radio station with a strong signal. You can also use CV control to change radio stations if you prefer. Don't forget to adjust the volume using the dedicated buttons, and experiment with different lengths of patch cables to find the best reception for your desired stations.

An intermediate level usage example for the ST Modular RADIO Eurorack module is to use CV control to scan through different radio frequencies and manipulate them in real-time. To do this, patch a gate or trigger signal into the CH- and CH+ inputs and observe the LED indicators to confirm the signal is applied. The module will then perform an automatic channel search and output the radio frequency at the OUT socket. If you want to further adjust the radio frequency, patch the CV output of another module into the CH- and CH+ inputs to control the channel search. This allows for dynamic and complex radio frequency manipulation within a modular setup.

Further Thoughts

ST Modular RADIO is a great tool for sound designers who are looking to incorporate some unexpected samples into their compositions. For instance, patching a gate output from your rhythm generator into the CH- or CH+ inputs will trigger the automatic channel-search function to scan up and down the frequency range until it detects a signal with good quality. You can create complex rhythmic patterns by syncing the trigger sequences with the channel switches. By combining channel-search with CV control, you can make your own radio interface where you can manually select the channels or change them in response to the changes in your patch. Moreover, the GAIN stage trimmer allows you to adjust the volume of the module to fit the level of your system, making it easier to integrate it with other modules in your setup.