Specifications

Transmitter and modulator section

Oscillator

Crystal controlled PLL

 

synthesizer

Type of emission

F3E

Carrier frequencies

 

U64 model:

770.125 to 781.875 MHz

 

(TV channels 64 and 65)

U66 model:

782.125 to 793.875 MHz

 

(TV channels 66 and 67)

U68 model:

794.125 to 805.875 MHz

 

(TV channels 68 and 69)

RF power output

10 mW (50-ohm load)

Tone signal

32.768 kHz

Battery condition signal

32.782 kHz

Type of antenna

1/4 -wavelength wire

Audio section

 

Microphone type

uni-directional dynamic

 

microphone

Pre-emphasis

50 µs

Deviation

±5 kHz (94 dBSPL1), 1 kHz input)

Frequency response

50 to 15,000 Hz

Signal-to-noise ratio

57 dB or more (A-weighted,

 

modulation frequency 1 kHz,

 

with ±5 kHz deviation at WRR-

 

800A/801A)

Audio attenuator

0 to 21 dB, variable in 3-dB

 

steps

Input level

151 dBSPL

 

(at audio attenuator 21 dB)

Power section

 

Power requirements

1.5 V DC

 

(one LR6/size AA alkaline

 

battery)

Battery life

Approx. 5 hours at 25°C or

 

77°F, with Sony LR6 alkaline

 

battery

General

 

Operating temperature

0°C to +50°C (32°F to 122°F)

Storage temperature

–30°C to +60°C (–22°F to

 

+140°F)

Dimensions

51 ⋅ 238 mm (diameter/length)

 

not including antenna

 

(2-1/8 ⋅ 9-3/8 inches)

Mass

Approx. 440 g (15.5 oz)

 

including battery

Supplied accessory

Operating Instructions (1)

Microphone holder (1)

Screw adaptor PF 1/2 to NS 5/8 (1)

Design and specifications are subject to change without notice.

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1) 0 dBSPL = 2 ⋅ 10-5Pa

14US