#925MHz Antenna

[rfantenna]

2G/3G/4G Combo Screw Mount Antenna with RG174 Cable (L-3MTR) + SMA (M) St. Connector

A 2G/3G/4G combo screw mount antenna is a type of antenna designed to support multiple generations of cellular technology, namely 2G (GSM), 3G (UMTS), and 4G (LTE). These antennas are typically used in applications where there's a need for reliable cellular communication across different generations of networks.

The "screw mount" aspect refers to how the antenna is installed; it typically involves screwing the antenna onto a suitable surface, such as the roof of a vehicle or a fixed structure. This type of mounting provides stability and durability, making it suitable for outdoor and rugged environments.

[rfantennaindia]

4G 5dBi #AdhesiveAntenna With RG174 (L-3Mtr) Cable + SMA (M) St. Connector

SKU: ET-LTS-1L3-SMS

-SPECS:-

• Product Antenna

• Type-External Antenna

• Frequency-698~2700MHz

• Gain- SdBi

• Technology-4G

• Mounting Adhesive Mount

• Dimension-117x22mm

• Cable-RG174

• Connector- SMA Male

Know More At - https://eteily.com/3-rf-antenna

#eteily#technologies#eteilyindia#rfantenna#5g#4g#external#telecom#telecomunication#india

[cowave01]

[loopdetector]

UHF的优点介绍： ❀ Antenna independence Most of the card readers on the market are integrated with the antenna, but this greatly increases the cost of maintenance and the difficulty of repair. JUTAI was dared to separate the UHF antenna and its control board from the card reader itself, greatly reducing repair cost and power dissipation. ❀ 天线独立 市面上大多数的读卡器都是与天线为一体的，但这大大增加了维护的成本和修理的难度，钜泰大胆创新地将UHF的天线与读卡器本身独立开来，大大减少了使用过程中的其他维修成本。 ❀ It can perfectly work with UHF sticker/tag It is more convenient to work with a serial of UHF stickers/tag. A ideal solution for hands-free vehicle access control system. ❀ 可与标签工作 可搭配UHF及各类感应标签使用，方便快捷。 ❀ Best reading range: 10meters (The installation UHF reader should avoid direct contact with the metal, with a distance of 10-15cm). With JUTAI UHF card or sticker, the distance of card reading is more stable. ❀ 最佳读卡范围：10 m (安装UHF应避开与金属直接接触，相距10-15cm)。 配上钜泰UHF 卡片或标签，读卡距离更稳定。 ❀ UHF card with card sticker become hands-free access control Passing high and low temperature testing, JUTAI card sticker can be completely attached to the windshield of the car or the outside of the car, and the card can be read automatically.  ❀ 配套钜泰的卡套可实现免手持进入 通过高低温测试，钜泰的卡套可完全贴在车内或车外的挡风玻璃上，自动读取卡片。 ❀ UHF Frequency Setting JUTAI's UHF passive readers can be set to different frequencies depending on the actual situation to meet the different needs of customers in various countries. For example: ❀ 频率设置 JUTAI的UHF读卡器可根据实际情况设置不同的频率，以满足各个国家客户的不同需求。例如： Country Frequency in Mhz Bangladesh 925-927Mhz Colombia 902-928Mhz Costa Rica 902-928Mhz India 865-868Mhz Indonesia 923-925Mhz United Arab Emirates 865-867Mhz Jordan 865-868Mhz Malaysia 919-923Mhz Mexico 902-928Mhz Oman 865.6-867.6Mhz Thailand 920-925 ❀ Low radiation value After rigorous testing, the radiation value of JUTAI's UHF reader is much lower than international standards, and can be used safely for human body. ❀ 低辐射值 经过严格检测，JUTAI的UHF读卡器的辐射值大大低于国际标准，可放心使用，对人体安全无害。 ❀ Block Compared with the traditional plastic cover, the hard shell cover has the function of convenient maintenance and better protection of the product, no waste and no cost increase. ❀ 封盖 采用硬壳封盖，相对于传统胶盖模式有着方便维修和更好保护产品的作用，不造成浪费，不增加成本，热熔胶封边使其更加牢固和防水。 ❀ IP65 https://www.instagram.com/p/BvtsiXjjhIa/?utm_source=ig_tumblr_share&igshid=o3i2vvv8t78z

[rosesana]

Handheld UHF RFID Reader With Circular Polarized Antenna type C3000C-R2000

The UHF RFID reader is based on the Windows CE 6.0 operating system and is powered by an 800 MHz Cortex-A8 processor and is combined with 256MB RAM, 4GB of flash memory, and an SD card slot with a maximum capacity of 32GB. In terms of RFID reader, this device uses the R2000 module which has high and stable performance and is compatible with UHF RFID tags with the EPC C1 GEN2 / ISO18000-6C protocol. This device is also equipped with the best quality Zebra 1D / 2D barcode scanner that can make barcode reading quickly and accurately. For connection, this device is equipped with wifi and bluetooth to ensure you can send data easily. All the features offered are wrapped with a capacity of 3200 mAh and 5200 mAh batteries to support your activities all day.

Specification

Dimensions: 192 x 87 x 151 mm

Screen: 3.5 'QVGA (240 * 320) 6.5M colors

Touch Panel: Rugged resistive touch panel

Main Battery: 3200 mAh Li-ion

Pistol Battery: 5200 mAh Li-ion battery

Memory Slots: 1 MicroSD

Interface: MicroUSB (OTG)

Audio: 0.5W speaker

Operating System: Windows Embedded CE 6.0

SDK: Yes

Programming Languages: C ++, C #, VB.NET

Tool: Visual Studio 2005/2008

Network: IEEE802.11 a / b / g / n Wifi & Bluetooth 2.0

CPU: Cortex-A8 800MHz

RAM + ROM: 256MB + 4GB

Fingerprint: TCS1 / TCS2SS (Capacitive) @ 508 DPI

UHF Reader Module: CM2000-1 based on Impinj Indy R2000

Frequency: 865MHz-868MHz / 920-925MHz / 902-928MHz

Protocol: EPC C1 GEN2 / ISO18000-6C

Antennas: Circular polarization (4dBi)

Power: 1W (30dBm, + 5dBm to + 30dBm adjustable)

R / W distance:> 8 meters

Tag Read Speed:> 200 tags / second

1D Barcode: Honeywell N4313 / Zebra SE965

2D Barcode: Zebra SE4500

1D Symbologies: UPC / EAN, Code128, Code39, Code93, Code11, Interleaved 2 of 5, Discrete 2 of 5, Chinese 2 of 5, Codabar, MSI, RSS, etc.

2D Symbologies: PDF417, MicroPDF417, Composite, RSS, TLC-39, Datamatrix, QR code, Micro QR code, Aztec, MaxiCode; Postal Codes: US PostNet, US Planet, UK Postal, Australian Postal, Japan Postal, Dutch Postal (KIX), etc.

DATASHEET & MANUAL

https://ift.tt/3by3pzK

https://ift.tt/2yHJhMP

https://ift.tt/2KpGcDS April 23, 2020 at 09:56PM

[fidorobot]

The current configuration. The new U-Blox GPS is in the 3D printed box at the front (ignore the google eyes). The GPS antenna is on top. The two rear antennas are the 925MHz antenna for the GPS RTK messages, on the right, and the 2.4GHz antenna for the XBee on the left.

The Adafruit IMU is in the 3D printed tower although, as I’m not using the compass, the isolation is unnecessary.

The pictures also show the 6 IR Proximity Detectors, the DIN charging socket, and the switch. The button on the back disables the motors for safety.

[rfantenna]

[rfantennaindia]

IoT LoRa Antenna

Eteily IoT LoRa Antenna (standing for Long Range Antenna) is a LPWAN Technology, considered by a long range connected to a low power consumption. It is a technology that can be parameterized to change its range and data rate, manipulating its power consumption. It is usually provided with its integrated MAC layer called LoRaWAN, offering IoT-oriented devices management. IOT ISM LORA Helium Antenna manufacturer in India, We supply product World Wide. 

An IoT LoRa antenna is a specialized antenna designed to work with IoT devices that use the LoRaWAN protocol. LoRaWAN is a low-power, long-range wireless communication protocol that is used in a variety of IoT applications, such as smart cities, agriculture, and industrial automation.

IoT LoRa antennas are designed to operate in the unlicensed Industrial, Scientific, and Medical (ISM) frequency bands, such as 868 MHz and 915 MHz, depending on the region. These antennas are designed to provide long-range communication with low power consumption, making them ideal for IoT devices that require long battery life. We are also Manufacturer and Suppliers of IoT LoRa Antenna in Delhi, Mumbai, Chennai, Hyderabad, Pune, Bangalore, Kolkata and Ahmadabad.

[fidorobot]

Navigation Plan B

I’ve been working with some Inertial Measurement Units, particularly with the magnetometer (compass) function. I planned to use the compass to align the robot towards its destination, before starting, and to convert the odometer readings into a navigation input (direction + distance) to improve on GPS accuracy.

I tried two IMUs; a Mini-IMU from Pololu and then an Absolute Position Sensor from Adafruit. The problem I had was that they needed calibration before use. The Absolute Position Sensor, for example, needed to be tipped onto each axis to calibrate the accelerometer, sit still to calibrate the gyro, and be waved about to calibrate the magnetometer! I found I could pull the calibration data out, and reload it on startup to avoid the accelerometer calibration, and the gyro took care of itself, but the magnetometer needs calibration each time the robot powers up - not gonna happen!

So, Plan B is no compass. Instead I’ll use just the gyro for relative motion, and I’ve invested in a more accurate GPS. I bought a U-Blox C94-M8P Development Kit. This is a pair of modules incorporating a GPS and a 925MHz radio. One module is fixed (with an antenna on the workshop roof) and the other is mobile. The fixed unit sends satellite correction messages (RTK protocol) to the rover. This allows it to correct its own satellite measurements for atmospheric effects and deliver an accuracy in centimeters! It seems to work.

So, I no longer need to fuse the odometer/compass data with the GPS for sufficient location accuracy. Also, once moving, the GPS will give a good heading and, after stopping, the gyro will enable a turn towards the next destination. I just need to tell it where it’s pointing when I switch it on. (Just accurately enough so that it doesn’t hit anything before the GPS tells it to correct its course!)

We’ll see how this works.