Features:

Frequency Range:   VHF:136-174MHz   245-245.9875MHz (220-260MHz)

                                        UHF: 400-490MHz

Output Power:        VHF: 10W/25W/60W

                               UHF: 45W/25W/10W

 1750Hz Tone

 CTCSS/DCS setting & scanning 

 0-9 SQL grade setting 

 Frequency/Channel scanning

 High/Mid/Low power selectable

 Voice compander

  Repeater offset shift

Keypad lock function

 Contact book

  Battery voltage display

  DTMF/2 tone/5 tone

ANI ID

 Remote kill/ stun/ activate/ revive

  Emergenvy alarm

 Wide/Narrow band setting

TX inhibit

 Busy Channel Lock-Out

 Channel name editing

Reverse frequency

 Talk around

  Scrambler(Optional)

 Voice prompt

Time-out Timer

 Auto Power off

 VFO step setting:5/6.25/10/12.5/20/25/50kHz

Model

                MT-660

                                                                         General

Frequenvy Range

136-174/245-246/400-490MHz

Channel Capacity

200

Channel Spacing

5/6.25/8.33/10/12.5/15/20/25/30/50KHz

Freruency Stability

2.5ppm

Operating Temperature

-20°C ~ + 60°C

Operating Voltage

13.8V DC ± 15%

Dimension(HxWxD)

                           145mm x190mm x47mm

Weight(with bracket)

1200g

                                                                           Receiver

Reference Sensitivity

0.25V / 0.35V

Operating Bandwidth

60dB 12.5KHz /70dB 25KHz

Adjacent Channel Selectivity

60dB 12.5KHz 70dB 25KHz

Inter-modulation Rejection

≥60dB/ ≥65dB

Spurious Response Rejection

≥70dB

Rated Audio Response

+1-+3dB

Rated Audio Distortion

<5%

FM Hum&Noise

≥40dB 25KHz /≥45KHz 12.5KHz

                                                                             Transmitter

RF Power

45W/25W/10W(UHF)/60W/25W/10W(VHF)

Frequency Modulation

11kΦF3E / 16kΦF3E

Modulation Distortion

<5%

FM Noise

≥36dB 25KHz /≥40KHz  12.5KHz

Adjacent Channel Power

≥60dB 12.5KHz /≥70KHz 25KHz

Audio Response

+1-+3dB

Audio Distortion

<5%