Portable Walkie Talkie With Flashlight JS-680
- Ref Price:
-
- Loading Port:
- China Main Port
- Payment Terms:
- TT or LC
- Min Order Qty:
- 10 Sets set
- Supply Capability:
- 500 Sets Per Week set/month
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Specification of Portable Walkie Talkie With Flashlight JS-680
General | |
Frequency Range | 400- 470MHz |
Channel Capacity | 16 |
Operated Voltage | 7.4V |
Battery Capacity | H-1500 MAh Li-ion |
Battery Life(5-5-90 duty cycle) | About 10 Hours |
Frequency Stability | ±2.5ppm |
Operated Temperature | ﹣20℃-﹢60℃ |
Antenna Impedance | 50Ω |
Dimensions | 97.36mmx57.2mmx29.3mm |
Transmitter | |
RF Power Output | ≤5W |
Modulation | F3E |
Spurious Emission | 65dB |
FM Noise | 45dB(W) /42dB (N) |
Audio Distortion | ≤5% |
Transmitting Current | 1.2A |
Receiver | |
Sensitivity (12dB SINAD) | ≧0.20μV |
Intermodulation | ≧65dB |
Adjacent Channel Selectivity | ≧60dB |
Spurious Response | ≧60dB |
FM Noise | 45dB(W) /42dB (N) |
Audio Distortion | ≤5% |
Accessory | |
Battery/Antenna/Charger/Belt Clip | |
Application of Portable Walkie Talkie With Flashlight JS-680
Certificates of Portable Walkie Talkie With Flashlight JS-680
Workshop of Portable Walkie Talkie With Flashlight JS-680
Testing Equipments of Portable Walkie Talkie With Flashlight JS-680
Shipment of Portable Walkie Talkie With Flashlight JS-680
- Q:How to set the handheld GPS related parameters and coordinate conversion parameters throughout the country
- Collect the application area of high grade control data in GPS receiver applied earth area (such as a county) find three (or more) uniform grade (accuracy better) or GPS "B" network, the best point is around without interference of electromagnetic wave, vision, the satellite signal is strong. To the local surveying and mapping management department (such as: the local bureau of Surveying and mapping, surveying and Mapping Institute) Gauss plane coordinate copy these points of the Beijing 54 Coordinate System (x, y), the elevation of H and WGS-84 coordinates of the geodetic coordinates (B, L), the high H.
- Q:Is it accurate to measure highway mileage with GPS handheld
- Measuring mileage, since the unit has been upgraded to the inside, it is quite accurate oh
- Q:I am a handheld GPS precision is low, how to use to be able to improve certain accuracy.
- Look at the maximum accuracy of GPSIf the difference accuracy can reach 1cm you can connect CORS single base station and other network RTK way to achieve the corresponding accuracy
- Q:I would like to ask the GPS handset and GPS receiver (Surveying and mapping qualification application needs) is there a difference? If yes, what is the difference?
- 1. GPS is a geodetic instrument, with an accuracy of CM, generally for the millimeter,,Divided into (1) pure static type, such as the South Star of the North Star, the accuracy of mm, now the basic domestic,,(2) RTK, RTK can do is use, carrier phase measurement, the precision is cm level, RTK mobile station must have the control hand book, like television and remote similar, but now there are a lot of hand book can be used as handset2. The handset is generally rough field positioning equipment, navigation for mobile phone use, the general size, precision grade m, now can to about 20cm, and can be used for RTK mobile station use (need to access the base station) can reach cm level.Surveying and mapping qualification applications require geodetic measurement equipment, that is, 1.Now domestic GPS, such as the Haida, the south, China, etc. can be measured, not expensive
- Q:The navigation module it is "selph" three generation? Another one I mainly use it to measure the land area, easy to use, the error is not big?I want to buy Magellan 500 do not know whether it is good to use
- Professional handheld GPS only Magellan and set SIBAO
- Q:Handheld GPS locator measuring accuracy is about how many meters?
- The higher the accuracy, the higher the price. You can consult the Haida official website mobile MGIS mall
- Q:Mobile GPS can replace professional handheld GPS
- No, the phone's GPS is used for navigation, professional handheld GPS is used for measurement. Navigation GPS cannot be used for measurement because of insufficient accuracy.
- Q:Mountaineering to buy a professional GPS or Mountaineering Watch
- Now the mobile phone is the essential tool, mobile phone has GPS, can pre download ordinary maps, satellite maps, and contour map, its function is far more than a handheld GPS or hiking watches, can better meet the needs of the mountain.
- Q:GPS Mu meter which brand is good, handheld high-precision land area measuring instrument
- A German born mu can also recommend a good precision measuring instrument.
- Q:Handheld GPS which brand is good
- Now GPS can also do handheld measurement accuracy, precision can usually reach decimeter level, the industry there are relatively well-known Huace, professional GPS measurement instrument, high precision of handheld GPS the good.
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Portable Walkie Talkie With Flashlight JS-680
- Ref Price:
-
- Loading Port:
- China Main Port
- Payment Terms:
- TT or LC
- Min Order Qty:
- 10 Sets set
- Supply Capability:
- 500 Sets Per Week set/month
OKorder Service Pledge
OKorder Financial Service
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