14
US
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1) 0 dB
SPL
= 2
×
10
-5
Pa
Specifications
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.
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 dB
SPL
1)
, 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 dB
SPL
(at audio attenuator 21 dB)
