61
Maintenance / Reference
General
DR-635T, DR-635E
Frequency coverage
DR-635T
87.500 - 107.995MHz (WFM RX)
108.000 - 135.995MHz (AM RX)
136.000 - 173.995MHz (RX)
144.000 - 147.995MHz(TX)
335.000 - 479.995MHz (RX)
430.000 - 449.995MHz (TX)
DR-635E
87.500 - 107.995MHz (WFM RX)
144.000 - 145.995MHz (RX, TX)
430.000 - 439.995MHz (RX, TX)
Operating mode
16K0F3E (Wide mode), 8K50F3E (Narrow mode)
Frequency resolution
5, 8.33, 10, 12.5, 15, 20, 25, 30, 50, 100kHz
Number of memory channels
200
Antenna impedance
50
Ω
unbalanced
Power requirement
13.8V DC +/-15% (11.7 to 15.8V)
Ground method
Negative ground
Current drain
Receive: 0.7A(Max.), 0.5A(Squelched)
Transmit: 11.0A
Operating temperature
- 10
°
C to 60
°
C
Frequency stability
+/- 2.5ppm
Dimensions
140(w) - 40(h) - 185(d) mm (w/o knobs)(5.51” x 1.57” x 7.28”)
Weight
Approx. 1.0kg (2.2lbs.)
Transmitter
Output power
High:50W(VHF), 35W(UHF)Mid:20WLow:5W
Modulation system
Variable reactance frequency modulation
Maximum frequency deviation
+/- 5kHz (Wide mode) +/-2.5kHz (Narrow mode)
Spurious emission
-60dB
Adjacent channel power
-60dB
Modulation Distortion
Less than 3%
Microphone impedance
2k
Ω
Receiver
Sensitivity
-14dBu for 12dB SINAD
Receiver circuitry
Double conversion superheterodyne
Intermediate frequency
1st 21.7MHz 2nd 450kHz (VHF)
1st 45.1MHz 2nd 455kHz (UHF)
Squelch sensitivity
-18dBu
Selectivity(-6dB/-60dB)
12kHz/28kHz
Spurious and image
70dB
rejection ratio
Audio output power
2.0W (8
Ω
,10%THD)
Specification
*All specifications are subject to change without notice or obligation.