Arduino UNO Rev3, Radio Transmitter Controller Shield with 4-pin connector to interface with radio microphone jack.
- Keying Output line is selectable – Ground for radio PTT or (+5 vdc) for interfacing to external circuitry. Available with or without relay.
- Solid-state PTT switching available (no relay installed).
- Powered by (+12vdc) at Arduino Vin pin.
- Adjustable Transmitter audio level control.
- Status leds – Standby/Transmit.
- Spare set of relay contacts (NO, NC, Common) for user define usage.
- Shipped assembled and tested in protective padded packaging.
THController-A1R $15.00 Plus $6.00 shipping
THController-A1 (without relay) $13.00 Plus $6.00 shipping