
Electro-Voice Bosch R300-RX-C Wireless Microphone Receiver

Expected June 30, 2025
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Proven at the highest level of touring and trusted in thousands of installations around the world, Electro-Voice's industry-leading ClearScan system scans through the R300's 32 preset channels and selects the clearest channel – all with the touch of a single button. In an increasingly challenging RF world, ClearScan gives you the confidence to go wireless without worry, ensuring noise-free operation and the longest operating range. Matching the R300's transmitter and receiver frequencies is also as simple as the touch of a button. EZsync uses infrared technology to set the transmitter to the correct frequency, confirming operation in one automatic step. Error-free wireless setup has never been easier.
Electro-Voice R300-RX-C Wireless Receiver Features:
- ClearScan finds the clearest channel available with the touch of one (1) button.
- EZsync infrared channel transfer from the receiver to the transmitter for easy and error-free setup.
- 32 preset channels, with compatible groups of eight (8) channels for simultaneous use.
- 14 hour battery life from two (2) AA alkaline batteries.
- Detachable half-wave receiver TNC antennas enable use with APD4+ antenna distribution system.
Electro-Voice R300-RX-C Specifications:
Receiver Type: Synthesized PLL
Frequency Range (RF):
A Band 618 – 634 MHz
B Band 678 – 694 MHz
C Band 516 – 532 MHz
E Band 850 – 865 MHz
Number of Channels: 32
Modulation: ± 40 kHz
Diversity: True Antenna
RF Sensitivity: <1.0 μV for 12 dB SINAD
Image Rejection: > 55 dB
Squelch: Tone Code plus Amplitude
Power Requirements: 12–16 VDC, 500mA max
Operating Temperature: 5°C to 45°C (41°F to 113°F)
Dimensions:
43 mm H x 206 mm W x 210 mm D
(1.72 in H x 7.8 in W x 8.0 in D)
Frequency Response: 80 Hz – 18 kHz ± 2 dB
Balanced Output: 20 dBV (max @ 40 kHz deviation)
Unbalanced Output: Adjustable 8 mV to 0.755V RMS
Distortion: < 1.0%, 0.4% typical (ref 1 kHz, 40 kHz deviation)
Signal-to-Noise Ratio: > 100 dB A-Weighted
Dynamic Range: > 95 dB
(1) Electro-Voice Bosch R300-RX-C Wireless Microphone Receiver