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The Arduino NANO1-SS Transmitter Controller is available with solid-state PTT switching as above.
Arduino NANO1-R relay version has dry NO & Common contacts for keying the transmitter’s PTT line that has issues with solid-state switches. See below.
The 5-pin connector provides Ground, Incoming supply voltage, Transmitter PTT, Transmitter Audio Input, one pin is a spare for additional functions into or out of the NANO1 Shield..
Unit comes assembled and tested using a standard T-Hunt controller Arduino sketch.
Arduino NANO1-SS $13.00 plus shipping
Arduino NANO1-R $16.00 plus shipping