TOA / WM-1120 Wireless microphone

It is a portable transmitter that uses radio waves in the 322 Mhz band, which is assigned for the C-type wireless microphone of a specified low-power radio station.

■ Power supply: DC1.2V (NiCd battery), DC1.5V (dry battery)
■ Radio wave type: F3E
■ Transmission frequency: 322.025-322.150Mhz, 322.250-322.400Mhz 25kHz interval 13 channels
■ Transmission output: 1mW
■ Oscillation method: Crystal controlled PLL synthesizer method
■ Tone frequency: 14.80kHz, 14.75kHz (1 channel out of 2 channels)
■ Microphone used: Unidirectional electret condenser type
■ Overall frequency characteristics:
200Hz-5kHz (portable transmitter → portable receiver)
150Hz-6kHz (portable transmitter → desktop receiver, wireless speaker)
■ Pre-emphasis: 50μs
■ Maximum input sound pressure:
114 dB SPL (± 7 kHz deviation, microphone sensitivity Hi)
120 dB SPL (± 7 kHz deviation, microphone sensitivity Lo)
■ Batteries used: Dedicated rechargeable battery WB-1200 x 1 or AA alkaline battery x 1
■ Operating temperature range: -10 ℃ to + 40 ℃
■ Finish:
・ Body: Resin (elastomer + polycarbonate)
・ Dark gray (Munsell 10B 3.5 / 1 approximate color) painting
・ Head: Metal mesh (iron) dark gray (Munsell N3.5 approximate color) coating
■ Dimensions: φ 40 x 231 mm
■ Weight: 190g (including batteries)
■ Accessories:
・ AA battery (R6PU, for testing) x 1
・ Setting driver x 1
・ Storage case x 1
・ Channel label x 1
・ Attachment for charger x 1
・ Mic holder (φ30 to φ35, NS5/8 → U5/16 conversion adapter included) x 1