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22. Precautions
Before use, you need to make sure to comply with the following basic safety tips to ensure safe and reliable use of the product:
◆Read and understand all safety instructions and usage information.
◆When the battery "
" character space is used , or the battery "
Please charge the machine to avoid affecting normal use.
◆It is recommended to use charging equipment with an output voltage of DC5V
battery or equipment.
◆If the machine is not used for a long time, please make sure to charge it once a month.
◆Do not let this product be exposed to rain, moisture, dripping or splashing of any liquid.
◆Do not allow this product to be close to high-temperature heat sources, and do not grill or bake at high temperatures.
◆Do not leave it under direct sunlight for a long time.
◆Do not let this product fall, be hit, or put heavy pressure on it.
Attachment 1:
The following is the reception of shortwave single sideband communication signals (SSB)
Some commonly used frequencies for shortwave single sideband communication (KHZ) (unspecified frequencies are USB)
Guangzhou Coast Station: 8716 8782 13107 13149 13182 17398 19772 19793 22735
Tianjin Coast Station: 13092
Shanghai Coast Station: 8773
Yantai Coast Station: 4381 8764 13077 17332
Zhanjiang Coast Station: 2182 6200 6501
Zhoushan Haixiang Shipping Company: 12408
Xiamen Coast Station: 4314 8453 12876
US Army Radio Hawaii Guam: 10320 13362 (day) 5765 6350 (night)
Manila Airport, Philippines: 8942
Iceland Radio: 13855
East Asia Pacific Aviation Weather Station: 8828
Ministry of Agriculture Nanhai District Fishery Port Supervision and Administration Bureau 12215
Guangdong Zhanjiang Ocean and Fisheries Bureau 4925
Guangxi Beihai Fisheries Bureau 6230
Hainan Sanya Ocean and Fisheries Bureau 8210
Guangdong Lianjiang City Ocean and Fishery Bureau 4378
Guangxi Fangchenggang Aquaculture and Animal Husbandry Bureau 6300
Ocean and Fisheries Bureau, Danzhou City, Hainan 13250
Hainan Lingao County Marine Fisheries Bureau 7735
International maritime communication band: 8195-8815 12330-13200
Frequencies commonly used by amateur radio stations:
Japan Meteorology: 9970 13597
Japanese newspapers: 12745
Taiwan weather: 13900
Southeast Asian languages, English coast station strong signal frequency band: 16590-16860
80 meters 3500-3900
40 meters 7000-7100 (LSB)
20 meters 14000-14350
15 meters 21000-21450
10 meters 28000-29700
Philippines: 6765
Amateur Radio: 14180
Ham Radio: 14270
LSB Japan Amateur Radio: 3569
Telegraph station: 12967
Aviation: 13281 13284
The above frequencies are for reference only.
Civilian intercom free channels:
China free channels:
1: 409.7500
2: 409.7625
3: 409.7750
4: 409.7875
5: 409.8000
6: 409.8125
7: 409.8250
8: 409.8375
9: 409.8500
10: 409.8625
11: 409.8750 12: 409.8875
13: 409.9000 14: 409.9125
15: 409.9250 16: 409.9375
17: 409.9500 18: 409.9625
19�409.9750
20�409.9875
European public walkie-talkie standard frequency ( unit: MHZ)
1: 446.00625
2: 446.01875
3: 446.03125
4: 446.04375
5: 446.05625
6: 446.06875
7: 446.08125
8: 446.9375
Free home radio frequencies in the United States:
1: 462.5625
2: 462.5875
" character frame flashes, it means that the battery power is low.
1A~3A for charging to avoid damage to the lithium
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