703看起来比857稍大点但比857短些，前者胖短，后者瘦长。
ic-703
amateur hf/vhf transceiver
frequency range: 10-160 m + warc/6 m
mode: am/fm/ssb/cw/rtty
rf power output: 0.1-10 / 0.1-10 w in 5 steps
voltage: 9-15.9 vdc
current drain: rx: 250-450 ma
tx: max 3 a
impedance: 50 ohms, so-239
dimensions (w*h*d): 167*58*200 mm weight: 2 kg
manufactured: 2002-20xx
other: built-in memory keyer and auto-at. dsp
105 memories.
ft-857
type: amateur hf/vhf/uhf transceiver
frequency range: tx: 10-160 m + warc and 60 m / 6 m / 2 m / 70 cm
rf power output: 6-160 m: 100 w
2 m: 50 w
70 cm: 20 w
voltage: 13.8 vdc
current drain: rx: 0.6-1 a
tx: max 22 a
impedance: 50 ohms, 1*so-239 + 1*n-type
dimensions (w*h*d): 155*52*233 mm weight: 2.1 kg
manufactured: 2004-200x
other: built-in keyer. beacon mode. 32 color display.
ctcss. 200 memories. detachable front panel.
dsp included in this updated version
资料来源：
http://www.rigpix.com/
