All of the radio was be set up to the same frequency,they can work with each other just on the same channel when out of the box.by the way,USB programming Cable included then connects your radio to your computer for fast and easy programming.If you are outside and you want to change the frequency,it also allowed to programming the radio manually by the keyboard.
Function:
Wide/Narrow Band(25kHz/12.5kHz)
Voice companding
Monitor function
Busy lockout function
Scanning function
Time-out Timer (TOT) function
LCD display
Battery voltage display function
Channel name display and editing functions
Keypad lock function
Emergency alarm function
Low battery alarm
Power saving function
Chinese and English voice prompt
PC software programmable
Basic Descriptions
Rated Voltage: 7.4V DC±10%
Output power: ≤ 5W
Battery type: Li-ion battery
Battery capacity: 1800mAh
Specification
Frequency stability: ±2.5ppm
Carier wave tolerance: 5ppm
Modulation character: 6 dB per fold frequency patch
Emission current: < 1.6A(5W)
CTCSS / DCS:0.5±0.1kHz(Wide) 0.3±0.1kHz(Narrow)
Inter modulation: 8-12mv
High/Low TX power selectable: 4W/1W
Adjacent channel selectivity(wide/narrow):
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Best reception. Have used a well-known different brand for years.They usually last about 9 months here, and there were way too many places we had reception dead spots.Was shocked at the difference. Multiple channels, squelch, everything.Great construction We love these.
Would have given 5 stars but the computer installation was … Would have given 5 stars but the computer installation was a bit tricky. However, these work great– tested in the hills of Vermont and worked perfectly. Very clear signal— If you are looking for professional grade at an affordable price then these are for you!
I use these mostly to manage an event in a … I use these mostly to manage an event in a large Las Vegas Convention facility. They are always in range of each other and are durable. Do not mistake these for cheap radios due to their price. You are getting much more than you are paying for. I would not hesitate to order more of these if I needed to. The only downside, and what kept this from being a 5 star review was lack of instruction manual. I am sure there are features that could make my life easier if I only knew ho to access them.