ADDAC 102 VC FM RADIO

Tune: sets the radio frequency 87.5 to 108 MHz
Volume: sets the output volume
Mute: Hard mutes the output signal
Seek Up/Down: seeks the next radio station
Search Up/Down: adds/subtracts 0.1Mhz or 0.2Mhz to the current frequency depending if in EU or US respectively.

Stereo output indicator led
External wire antenna via 2.5mm jack

Jumpers
There are 2 jumpers on the top right of the back pcb:

SMUTE OFF (no jumper)  / ON (with jumper)
Soft mute is a digital radio feature that automatically reduces the output volume if no station is detected.
If you plan to use the radio noise as a source do not place the jumper, if noise is undesired then use the jumper.

EU (no jumper)  / US (with jumper)
North American FM broadcast channels are spaced at every 200KHz frequencies: 99MHz, 99.2MHz, etc. In Europe, channels are spaced at every 100KHz frequencies. If you are located in the US and plan to use it as a noise source, use the EU setting; if you're planning to use it to mainly tune to radio stations in the US, then use the jumper.

There's a special firmware for Japanese radio frequency range (76Mhz to 96Mhz).
Other ranges are also possible. Contact us if you're located in Japan: we recommend that you acquire the ADDAC102 directly from us, so that it can be shipped with the necessary firmware already installed.