Alinco DR-638 - Specifications and Appendix; General Specifications; Receiver Specifications; Transmitter Specifications

34
Specifications
General
Frequency Range
TX: 136~174MHz
400~480MHz
RX: 108~180MHz (AM/FM)
220~260MHz (FM)
400~523MHz (FM)
350~399.995MHz (FM)
Number of Channels 758 channels
Channel Spacing
25KHz(Wide band)
20KHz(Middle band)
12.5KHz (Narrow band)
Phase-locked Step
2.5KHz
、
5KHz
、
6.25KHz
、
10KHz
、
12.5KHz
、
15KHz
、
20KHz
、
25KHz
、
30KHz
、
50KHz
Operating Voltage 13.8V DC ±15%
Squelch Carrier/CTCSS/DCS/5Tone/2Tone/DTMF
Frequency Stability ±2.5ppm
Operating Temperature -20~+60
℃
Dimensions(WxHxD) 139(W)x40(H)x212(D)mm
Weight about 1.15kg
11
Receiver (ETSI EN 300 068)
Wide band Narrow band
Sensitivity
(12dB SINAD)
≤0.25μV ≤0.35μV
Adjacent Channel
Selectivity
≥70dB ≥60dB
Audio Response +1~-3dB(0.3~3KHz) +1~-3dB(0.3~2.55KHz)
Hum & Noise ≥45dB ≥40dB
Audio distortion ≤5%
Audio power output
＞
2W@10%
Transmitter (ETSI EN 300 068)
Wide band Narrow band
Power Output
50W/25W/10W/5W(VHF)
40W/25W/10W/5W(UHF)
Modulation 16KΦF3E 11KΦF3E
Adjacent Channel
Power
≥70dB ≥60dB
Hum & Noise ≥40dB ≥36dB
Spurious Emission ≥60dB ≥60dB
Audio Response +1~-3dB(0.3~3KHz) +1~-3dB(0.3~2.55KHz)
Audio Distortion ≤5%
NOTE
Sepcifications are subject to change without notice due to
advancements in technology.