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Antenna specification

Shenzhen Viatom Technology Co., Ltd. 1663 Baby Monitor 2ADXK-1663 2ADXK1663 1663

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Dongguan Youbi Electronics Co., Ltd

1.S Parameter

Frequency (MHz)

Return Loss(dB)

VSWR

2400

-14.73 1.44

2450

-21.22 1.19

2500

-16.81 1.33

* Voltage Standing Wave Ratio(VSWR) Return Loss(RL) RL=20*log10[(VSWR+1)/(VSWR-1)

2. Efficiency and Gain

Frequency (MHz)
Efficiency (%)
Gain (dBi)

2400 67.47 2.59

2450 70.16 2.26

2500 68.68 2.36

Dongguan Youbi Electronics Co.,LTD Room 101,Building 2,No.9,
Xinfa Road,Lin Village,Tangxia Town
Tel:+86-769-81777126

Hangzhou Youbige Electronics Co.,LTD Room 106,Building 3,Letong Science Park,
No.500 Qiuyi Road,Binjiang District Websitewww.ubuant.com
 7   10 

Shenzhen Youbi Electronics Co.,LTD Room 106, Building A,Xinzheng Industrial Park,
57 Liuxian Road, Bao 'an District, Shenzhen

3. Radiation Pattern
3-1 Antenna 3D Radiation Pattern
2400MHz

2450MHz

Dongguan Youbi Electronics Co.,LTD Room 101,Building 2,No.9,
Xinfa Road,Lin Village,Tangxia Town
Tel:+86-769-81777126

2500MHz
Hangzhou Youbige Electronics Co.,LTD Room 106,Building 3,Letong Science Park,
No.500 Qiuyi Road,Binjiang District Websitewww.ubuant.com  8   10 

Shenzhen Youbi Electronics Co.,LTD Room 106, Building A,Xinzheng Industrial Park,
57 Liuxian Road, Bao 'an District, Shenzhen

3-2 Antenna 2D Radiation Pattern

Dongguan Youbi Electronics Co.,LTD Room 101,Building 2,No.9,
Xinfa Road,Lin Village,Tangxia Town Tel:+86-769-81777126

Hangzhou Youbige Electronics Co.,LTD Room 106,Building 3,Letong Science Park,
No.500 Qiuyi Road,Binjiang District Websitewww.ubuant.com
 9   10 

Shenzhen Youbi Electronics Co.,LTD Room 106, Building A,Xinzheng Industrial Park,
57 Liuxian Road, Bao 'an District, Shenzhen

3.Active test data

Channel
6 6

Measurement
TRP TIS(EIRP)

Total 23.69 -83.46

4.Antenna installation diagram

Dongguan Youbi Electronics Co.,LTD Room 101,Building 2,No.9,
Xinfa Road,Lin Village,Tangxia Town
Tel:+86-769-81777126

Hangzhou Youbige Electronics Co.,LTD Room 106,Building 3,Letong Science Park,
No.500 Qiuyi Road,Binjiang District Websitewww.ubuant.com
 10   10 

Shenzhen Youbi Electronics Co.,LTD Room 106, Building A,Xinzheng Industrial Park,
57 Liuxian Road, Bao 'an District, Shenzhen



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