Sangean ATS-909X2 The Ultimate FM/SW/MW/LW/Air Multi-Band Radio
Frequency range: 50Khz~2000Mhz(Registered already).
Screen: Customized and Optimized 3.5 inch touching screen, Quicker toucing experience..
Sound: One Customized speaker inside already, Nice sound..
RF Sensitivity: we use Four Layer board. The battery and the radio frequency module are better separated, and the battery interference is smaller.Under the condition of up to 250MHz, s/w is 0.3μV = 10dB.
Service: Best customer services,comes with manual Paper. If any message, We will reply within 6 hours..
AITRIP 12PCS TCA9548A I2C IIC Multiplexer Breakout Board Module 8 Channel Expansion Development Board for Arduino
The TCA9548A adapter is connected to an I2C device with multiple identical addresses on the same I2C port on the main control board for normal communication and use.There are 8 I2C interfaces on one expander, and there are eight bidirectional transfer switches that can be controlled by I2C bus. This means that after 1 expander is transferred, 8 identical addresses can be connected to the same I2C port..
Expansion board TCA9548A compatible with IIC bus and system management bus (SMBus), active low reset input, support for hot insertion, low standby current, no glitch during power-up, support for voltages between 1.8V, 2.5V, 3.3V and 5V buses Level shifting, TCA9548A I2C IIC multiplexer breakout board depending on the contents of the programmable control registers, any single SCn/SDn channel or combination of channels can be selected..
@ @: This Malachite DSP SDR radio is constructed based on the SDR principle, and the function is determined by the loaded software. Configure a built-in UHF, 2 controls, an encoder with buttons and a touch screen..
@ @: All types of analog modulation: AM, SSB, NFM, WFM，Connect to a computer via USB, which can transmit CAT, IQ and audio. Due to the characteristics of the msi001 chip, the dynamic blocking range is about 85dB.
@ @： Frequency：The range of the malachite sdr radio is from 50 kHz to 200 MHz (default version) / from 50 kHz to 250 MHz, 400 MHz to 2 GHz (registered upgrade version). The powerful stm32h743 with a clock frequency of 480 MHz is applied. Use the fully functional chip msi001.
@ @: Built-in receiving module In order to improve the HF reception on the antenna, an additional board with a source follower has been developed. The board will be built into the standard receiver design..
Phone Wired Auto-dialer Safety Alarm System Burglar Security 20 Second for Complete Home and Business Security
AUTOMATIC: Microcomputer design, can be seen, audible, can be recorded, can be put all-round automatic dial-up help..
IMMEDIATELY DIAL: Can be used with the world anti-theft host, or with a variety of independent sensor, in the situation immediately dial for help..
16 DIGITS: Can store 4 groups of telephone or mobile phone, each group up to 16 digits, and two levels of password..
REMOTE CONTROL: Door/Window contacts detect any forceful break-in. Remote control by phone, convenient and efficient. Android APP remote control and....
HIGHT QUALITY: The use of highly reliable IC, to reduce the discrete devices, and the use of double-layer circuit board, the structure is more....
Clock Splitter, Electronic Component Stable for Home for Industry
Si5351A clock generator is an I2C controller clock generator. It uses the onboard clock to drive multiple PLLs and clock dividers through I2C instructions. By setting for and divider, you can make precise arbitrary frequencies..
Most importantly, we even provide excellent tutorials and libraries to help you get started! Our is designed to work for microcontrollers and IDEs, but it can be easily ported to your favorite platform through I2C support..
With the breakthrough for Adafruit's Si5351A clock generator, you will never look for another crystal! The chip has an accurate 25MHz crystal reference voltage source and internal for and frequency divider, so it can generate almost any frequency, from 003c8KHz to 150+ MHz..
There are three independent outputs, and each output can have a different frequency. Through a breadboard friendly plug or optional SMA connector, the output is 3Vpp..
Such convenient small chip is put on its own breakout board PCB, with 3.3V LDO regulator, so it can be powered by 3-5VDC. We also placed a level circuit on the I2C line, so you can safely use the chip under 3V or 5V logic..
Padyrytu 400W Speaker Crossover 2 Way High-Low 4-16 Ohm Frequency Divider for Speaker 304142, motherboard red
Professional High-quality Crossover：This is a professional frequency divider, which is widely installed in the speaker. Playing an important role of the total frequency signal segmentation. Treble and bass dual frequency support, helps to transmit the treble signal to the tweeter unit, and divide the bass signal into subwoofer unit.
Perfect HIFI Sound Quality：Make the treble clear and increase the intensity of the bass, freely enjoy clear and natural music.To separate the mixed audio signal into a treble, bass, and then were sent to the corresponding treble, bass speaker unit in playback, resulting in enhance the sound quality purposes.
High Quality and Super Durability: wire wound ceramic resistor and high-quality metal film capacitors, ensure its large load power, long-term durability, never burnout.Large capacity, reasonable design, beautiful appearance, circuit board design with precise cutouts and lines, free for welding, very suitable for DIY.
Treble and Bass dual Frequency Dividing: It can be used in a wide range. It can be used with tweeter + bass two-way frequency speakers, 2.1 mid-high-range small satellite boxes and car full-range speakers, and can also use single-use treble or single-use bass. Speaker impedance of 4-16 ohms can be used, ....
Frequency Response: 20Hz-20KHz,+0,-1dB at watts / THD+N(20Hz-20KHz) ＜0.23％20Hz-20KHz / Siew Rate ＞30V/us / Damping Factor ＞150 / Output Circuitry Class AB / Signai to Noise Ratio ≥96dB / Cross Talk ＞80dB / lnput Sensitivity(8Ω) 1V / input lmpedance 20 k Ω baiance / 10 k Ω unbalanced unbalance balancing 20 k / 20 k /.
Three cooling fans / Connectors Input: XLR input, 1/4" input: Speakon connector Output: Speakon, locking type socket, Power Requirements: 90v-250v 50Hz.
Controls Panel: the power switch, channel 1 and channel 2 channel gain control.
After the board: working mode, pressure limit./ lndicators Panel: the power switch, channel 1 and channel 2 channel gain control.
After the board: working mode, pressure limit./ Amplifier Protection With short circuit, overload, overheat, cut peak pressure limit, dc, soft start, relay zero current switch, super audio and radio frequency protection device..
Frequency Response: 20Hz-20KHz,+0,-1dB at watts / THD+N(20Hz-20KHz) ＜0.23％20Hz-20KHz / Siew Rate ＞30V/us / Damping Factor ＞150 / Output Circuitry Class AB / Signai to Noise Ratio ≥96dB / Cross Talk ＞80dB / lnput Sensitivity(8Ω) 1V / input lmpedance 20 k Ω baiance / 10 k Ω unbalanced unbalance balancing 20 k / 20 k /.
Three cooling fans / Connectors Input: XLR input, 1/4" input: Speakon connector Output: Speakon, locking type socket, Power Requirements: 115v-230v 50/60 hz.
Controls Panel: the power switch, channel 1 and channel 2 channel gain control.
After the board: working mode, pressure limit./ lndicators Panel: the power switch, channel 1 and channel 2 channel gain control.
After the board: working mode, pressure limit./ Amplifier Protection With short circuit, overload, overheat, cut peak pressure limit, dc, soft start, relay zero current switch, super audio and radio frequency protection device..
SparkFun MicroMod LoRa Function Board - 1W 915M30S LoRa Module Frequency Range: 900 - 931MHz Transmit Power 28.5 - 30dBm (max) Modulation LoRa, FSK, GFSK, MSK, GMSK, OOK Antenna Impedance: 50Ω
The 1W LoRa MicroMod Function Board adds LoRa capabilities to your MicroMod project. It is intended to be used in conjunction with a MicroMod processor board and a MicroMod main board, which provides the electrical interface between a processor board and the function board(s)..
Utilizing the 915M30S LoRa module from EBYTE, which is a 1W (30dBm) transceiver based around the SX1276 from Semtech. There is a robust edge mount RP-SMA connector for large LoRa (915MHz) antennas.
with modification, a U.FL connector is also available. We've successfully tested a 12 miles line-of-sight transmission with this module (user results may vary)..
1W 915M30S LoRa Module Features: Based on SX1276 chipset from Semtech.
modulation: LoRa, FSK, GFSK, MSK, GMSK, OOK.
Data Rate: FSK: 1.2 - 300kbps, LoRa: 0.018 - 37.5kbps.
Note: A MicroMod Processor, Main Board, and antenna are not included with this MicroMod LoRa Function Board. These parts will need to be purchased separately.
