ICOM HM-257LS Earphone Microphone

The Icom HM-257LS Earphone Microphone is an excellent accessory for users of the IP501H, IP503H, ID-50E, ID-52E, and ID-52E PLUS, offering flat audio characteristics that enhance clarity in digital modes. With a slim L-shaped 2-pin connector, the microphone features a cable length of 450 mm (17.7 in) from the microphone to the earphone and 1000 mm (39.4 in) from the microphone to the transceiver, making it versatile for various setups. Weighing only 26 g (0.9 oz), it boasts a microphone impedance of 2.2 kΩ and can handle a maximum input sound pressure of 110 dB at 1 kHz. The earphone has an impedance of 120 Ω, with a rated input power of 4 mW and a maximum input power of 100 mW, making it a reliable choice for clear communication. This earphone microphone is highly recommended for those seeking quality and performance in their audio equipment.

Specifications:

• Connector Information: 2-pin slim L-shaped
• Cable Length: Microphone - Earphone: 450 mm; 17.7 in
• Microphone: - Transceiver: 1000mm; 39.4 in
• Weight: 26 g, 0.9 oz
• Microphone Impedance: 2.2 kΩ
• Maximum Input Sound Pressure (Microphone): 110 dB at 1 kHz
• Earphone Impedance: 120 Ω
• Rated Input Power (Earphone): 4 mW
• Maximum Input Power (Earphone): 100 mW