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SPECIFICATIONS
OVERALL
Frequency Range: VHF 169 -216MHz
Working Range: Up to 300 feet
Distortion: Less than 1% (15kHz deviation)
Frequency Response: 40Hz to 15kHz, 3dB
Dynamic Range: Better than 100dB
S/N Ratio: Better than 95dB
Operating Temperature: 0° – 45° C (32° – 113° F)
Noise Reduction: 2:1 logarithmic compressor/expander
Oscillator/Modulation: Crystal Controlled/FM
Receiver (211R, 221R, 311DR and 311DRH)
Receiver type: Super Heterodyne/Crystal Controlled
Image Rejection: Better than 60dB
Reception Sensitivity: Better than 15dBV
Reception Selectivity: 60kHz
Audio Output Adj. Range: min. -30dB, center 0dB, max. +6dB
Audio Output Impedance: 2.2K ohms unbalanced (200R, 211R, 221R, 311DR, 311DRH)
4.4K ohms balanced (311DR, 311DRH)
Power Requirements: 12V DC - 300mA
Size: 215(W)x210.4(D)x44(H)mm – 8.4x8.4x1.7" (311DRH)
280(W)x120(D)x37(H)mm – 11x4.7x1.4" (311DR, 221R)
150(W)x120(D)x27(H)mm – 5.9x4.7x1" (211R)
141(W)x129.5(D)x24(H)mm – 5.55x5.1x0.95" (200R)
Weight: 1.2kg (42.3oz) (311DRH)
830g (29.3oz) (311DR)
875g (30.8oz) (221R)
485g (17.1oz) (211R)
252g (8.9oz) (200R)
Transmitter 31HT 31LT 31IT 31XT
Microphone Unit Uni Dynamic Omni Electret N/A N/A
RF Output Power 10mW (50mW max) 30mW (50mW max) 10mW (50mW max)
Input Impedance 8K ohms 2.2K ohms 100K ohms 47K ohms
Audio Adj.Range N/A 30 dB
Battery AA (1.5V) 9V (006P) AA (1.5V)
Battery Life 8-10 hours (using alkaline battery)
Size
62X221mm
2.44X8.7"
86(H)X60(W)X21.5(D)mm
3.4(H)X2.3(W)X0.84(D)"
86(H)X60(W)X21.5(D)mm
3.4(H)X2.3(W)X0.84(D)"
33X120mm
1.3X4.7"
Weight 213g (7.5oz) 112g (4.0oz) 152g (5.4oz) 92g (3.2oz)
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