dr-435能扩频吗？
各项指标如下
genaral
frequency range tx: 430.000 - 449.995 mhz
rx: 350.000 - 511.995mhz
operating mode 16k0f3e (fm)/8k50f3e (narrow-fm)
frequency resolution 5, 8.33, 10, 12.5, 15, 20, 25, 30, 50 khz
memory channel 100 channels + 1 call channel
ant. impedance 50 ohm unbalanced
frequency stability +/- 5 ppm
microphone impedance 2k ohm
rated voltage 13.8 vdc +/- 15% (11.7-15.8v)
current transmit: approx. 10.0a
receive: approx. 600ma (max) 400ma (squelched)
operating temperature -10dig.c to +60dig.c (+14dig.f to +140dig.f)
ground negative ground
dimensions 142(w) x 40(h) x 174(d) mm
5.58"(w) x 1.57"(h) x 6.83"(d)
weight approx. 1.0kg (35.3oz)
transmitter
power output 35w (hi)
10w (mid)
approx. 5w (low)
modulation variable reactance
spurious emission -60 db or less
maximum frequency deviation +/- 5 khz / +/- 2.5 khz (narrow mode)
receiver
circuitry double-conversion superheterodyne
sensitivity -12.0 dbu (0.25uv) or less (12db sinad)
intermediate frequency 1st if 30.85mhz, 2nd if 455 khz
squelch sensitivity -16.0 dbu (0.1 uv)
selectivity (-6 db) 12 khz or more
6 khz or more (narrow mode)
selectivity (-60 db) 28 khz or less
14 khz or less (narrow mode)
audio output 2.0 w (8 ohm, 10% distortion)
