The YH-703 Morse code decoder uses a Type-C interface and a DC5V power supply. It features an LCD, dual audio input interfaces, function buttons, a buzzer, and status indicator lights. It supports real-time parsing of standard CW audio signals, automatically recognizes dotted and dashed Morse codes, and converts them into characters for display. It supports code rate viewing, custom speed adjustment, buzzer on/off operation, and other functions. Equipped with an independent external transmitter button board, it can be used with a shortwave radio for automatic CW telegram reception, or for self-study of Morse code transmission and reception. The entire unit has a transparent casing, is compact and portable, and is an integrated, practical device for amateur radio enthusiasts’ hands-on practice, college communication training, and self-study of Morse code.
Product parameters:
Product Model: YH-703
Power Supply Voltage: DC5V (Type-C Interface)
Product Dimensions: 116*63*25mm/33*34*15mm
PC Board Dimensions: 108*55mm/26*25mm
CW Audio Signal Input: Default dot time is approximately 100ms, stroke time is approximately 300ms (3 times the dot time)
CW Morse code practice:
A short press of the button is a dot (.), a long press is a dash (-).
Default dot duration: approximately 100ms, dash duration: approximately 300ms (3 times the dot duration)
Adjustable decoding time: 10~9990ms
Static operating current: approximately 25mA (without decoding)
Maximum operating current: approximately 60mA (with decoding buzzer sound)
Product functions:
1. CW audio signal input
2. Display received Morse code
3. Decode received Morse code audio into characters
4. Adjustable Morse code reception time
5. External CW button for practicing sending Morse code
6. With a buzzer, listen to the received Morse code in real time
7. Infrared remote control decoding
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