Watertight Transmitter
Rio Rancho, NM
15
Specifications and Features
Operating frequencies:
Block 470
470.100 - 495.600
Block 19
486.400 - 511.900
Block 20
512.000 - 537.500
Block 21
537.600 - 563.100
Block 22
563.200 - 588.700
Block 23
588.800 - 614.300
Block 606
606.000 - 631.500
Block 24
614.400 - 639.900
Block 25
640.000 - 665.500
Block 26
665.600 - 691.100
(100 kHz Steps)
(Frequency usage varies by country)
Channel Spacing:
100 kHz
Frequency selection:
Control panel mounted membrane switches
RF Power output:
50 mW
Compatibility Modes (6)
Digital Hybrid Wireless
®
and IFB
Pilot tone:
25 to 32 kHz; 3 kHz deviation
(in Digital Hybrid Mode)
Frequency stability:
± 0.002%
Deviation:
± 50 kHz max. (in Digital Hybrid mode)
Spurious radiation:
60 dB below carrier
Equivalent input noise:
–125 dBV, A-weighted
Input level:
Dynamic mic:
0.5 mV to 50 mV before limiting.
Greater than 1 V with limiting.
Electret lavaliere mic:
1.7 uA to 170 uA before limiting.
Greater than 5000 uA (5 mA) with limiting.
Line level input:
17 mV to 1.7 V before limiting.
Greater than 5 V with limiting.
Input impedance:
Dynamic mic:
300 Ohms
Electret lavaliere:
Input is virtual ground with servo adjusted
constant current bias
Line level:
> 2.7 k Ohms
Input limiter:
Soft limiter, 30 dB range
Bias voltages:
Selectable; 2V, 4V and Off
Gain control range:
44 dB; panel mounted membrane switches
Modulation indicators:
Dual bicolor LEDs indicate modulation of
–20, -10, 0, +10 dB referenced to full modulation
Controls:
Control panel with LCD and four membrane
switches
Low frequency roll-off:
Adjustable from 35 to 150 Hz
30
100
1kHz
10k
20k
+6
+3
0dB
-3
-6
-9
-12
Line in
Mic in 150 Hz
Roll-off
Mic in 35 Hz
Roll-off
Audio Frequency Response:
35 Hz to 20 kHz, +/-1 dB
(The low
frequency
roll-off is adjustable - see graph above)
Signal to Noise Ratio (dB):
(overall system, 400 Series mode)
(Note: the dual envelope “soft”
limiter provides exceptionally
good handling of transients
using variable attack and release
time constants. The gradual onset of limiting in the design begins below full modulation,
which reduces the measured figure for
SNR without limiting
by 4.5 dB)
SmartNR
No Limiting
w/Limiting
OFF 103.5 108.0
NORMAL 107.0
111.5
FULL 108.5 113.0
Total Harmonic Distortion:
0.2% typical (400 Series mode)
Audio Input Jack:
2.5 mm locking micro; threaded for stainless
sleeve on WP connector
Antenna:
Flexible, unbreakable steel cable.
Batteries:
1.5 Volt AA lithium or rechargeable
Battery Life:
50 mW = 13:00 hrs. (2 AA) lithium
Weight:
5.33 oz.. (151 grams) with lithium batteries
Housing Dimensions:
2.98 x 2.55 x 0.77 inches
75.7 x 64.8 x 19.6 mm
(including battery caps)
Emission Designator:
180KF3E
Specifications subject to change without notice.
Summary of Contents for WM/E01
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