MIC/PTT (KEY) Jack (3.5 mm): Tip - Mic input Ring - PTT Sleeve - GND CW-KEY INPUT MODE: Tip - DAH Ring -DIT Sleeve - GND 3. SPK/MIC Jack (3.5 mm): TIP: SPEAKER RING 1: MIC RING 2: PTT SLEEVE: GND 4. PTT OUT Jack (3.5 mm): Tip - SSR output Ring - SSR output Sleeve - GND Package Included: - 1 x Main Unit - 1 x Power Adapter - 1 x Handheld Microphone. Usually it cost about 35USD-50USD.
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