Reviews Pll Noise Figure

EXMAX UHF-938 UHF Acoustic Transmission Wireless Headset Microphone Audio Tour Guide System for Church Translation Teaching Travel Simultaneous Interpretation Tour (1 Transmitter and 20 Receivers)

...ation church translation system could transmit the voice of who speaks to the microphone of transmitter to the people who wear earphone of the receivers,transmission distance is about 150 meters/492ft.This EX-938 voice acoustic transmission equipment helps tour groups/speakers/lecturers/minister overcome background noise and keep social distancing..
【11 select-able UHF Channels all multigroup working】11 select-able UHF Channels allow at least 5 groups working simultaneously on different channel ID without interference.Each group uses unique Channel ID and different groups uses different Channel ID.One EX-938T transmitter could pair with many many EX-938R receivers within working distance so long as they are on the same Channel ID. PLL frequency synthesized technology ensures stable and reliable voice transmission performance..
【Easy Operation】AA batteries as power supply,low power consumption design for long working time over 15 hrs,easy operation on battery replacement,no built-in battery makes it conveniently to be taken on flight.EX-938T transmitter has two input jacks, AUX and MIC,AUX is for external audio input, such as music playing from CD or MP3/MP4 player.
MIC is for real-time human voice inputting,such as teaching,training, tourin....

【Product Parameters】- Working Voltage: 3---5V.
Protect-----This strong heavy duty tool bag can protect your tools from water and dust.
【Scope of Application】- The product can be applied to various RF receiving front ends, used for shortwave, FM broadcasting, remote control receivers, cable TV signal amplifiers and other RF signal amplifications that require low noise.
【Excellent Performance】-The radio frequency amplifier is made of high-quality electronic components and has the advantages of high gain, low noise figure, etc.
【Low Noise】- The noise factor is as low and 0.55dB, which is quite small.

-10dBm LO Power Consumption: Provides +24dBm third order intercept point, can achieve -10dBm LO power consumption, without high power LO drivers, there are no corresponding shielding and isolation problems, can improve system performance and reduce costs.
Single Power Supply: The mixer module is designed to be powered by a single power supply, and the RF, IF and LO ports have DC isolation capacitors for easy use.
10.3dB SSB Noise Figure at 70MHz: With the output amplifier and optimal source impedance of this mixer module, the SSB noise figure is 10.3dB at 70MHz. There is no insertion loss, no external duplexer, and no passive termination.
Low Distortion and Wide Dynamic Range: AD831 is a low distortion, wide dynamic range, single chip mixer, very practical.
Wide Application: Suitable for applications such as RF‑IF down conversion in HF and VHF receivers, second mixer in base stations, DC baseband conversion, quadrature modulation and demodulation, and Doppler shift detection in imaging.

ESS9038 PRO chip：ES9038PRO from ESS, with independent power and grounding, provides the best sound..
CPLD Complex Programmable Logic Device ：self-constructed digital integrated circuits with logic functions, clock management, 2nd PLL, digital shaping, DOP decoder, PCM /DSD depop switch and other exclusive technologies have laid a solid foundation for excellent sound quality.
ACCUSILICON Femtosecond crystal oscillator AS318-8：Two AS318-8 Hi-End audio oscillators from Accusilicon, with jitter in fs level..
XU216 from XMOS supports up to PCM768 & DSD512.Support APTX LL, APTX HD and LDAC (up to 24Bit/96KHz). Bluetooth can be disabled in menu..

Clock synthesization: Replace the input signal' s clock with precision oscillators (local or external). Interference from the input source' s clock is avoided. Function off: IIs, AES, COAX, OPT, BT.
PCM NOS, 1 Bit Function on: USB & LAN K2, ultra-low noise clock synthesizer: provides precision clock from local oscillators or external clock in..
LPF is specifically designed for the D/A converter using discrete devices. Final parameters of the circuit are adjusted with subjective listening. Different from IC s, discrete circuits provide the possibilities to control every detail in sound and performance. But the parasitic effects introduced huge challenges to development experience and device' s quality..

Clock synthesization: Replace the input signal' s clock with precision oscillators (local or external). Interference from the input source' s clock is avoided. Function off: IIs, AES, COAX, OPT, BT.
PCM NOS, 1 Bit Function on: USB & LAN K2, ultra-low noise clock synthesizer: provides precision clock from local oscillators or external clock in..
LPF is specifically designed for the D/A converter using discrete devices. Final parameters of the circuit are adjusted with subjective listening. Different from IC s, discrete circuits provide the possibilities to control every detail in sound and performance. But the parasitic effects introduced huge challenges to development experience and device' s quality..

Four port amplifier with a passive return path provides an increase of +7.5 db per port. Reduces snow and prevents image pixelation with digital cable, boosts antenna (OTA) signals for distribution to multiple TVs. May improve cable modem performance. May improve HDTV reception..
Compatible With All Standard And Digital Cable TV Services, OTA Antenna Reception. Not compatible on systems with an existing amplifier or pre-amplifier. Exceeds all SCTE Standards. Coaxial cables are not included..
6 kV surge protection for protection against lightning strikes. The nickel plated housing provides the excellent corrosion resistant protection against salt fog and rust. 5 Year Warranty (amplifier only).
3 dB Noise Figure provides clean amplification of weak signals to overcome the poor noise figure in TV tuners and converters. 6 kV Combination Wave Surge Protection Unique surge protection on all ports..
PTC Short-Circuit Protected UL Listed Adaptor - Self-resetting circuit protection provides safe protection against short-circuits to minimize outage times..

This Certified Refurbished product is authorized Factory Refurbished, shows limited or no wear, and includes all original accessories plus a 90-day....
Embedded Ultra Low Noise Amplifier with Clear Circuit Technology (1.0 dB typical noise figure).
Dual-band amplified HDTV reception up to 50 miles/Extra Long Quality Coax (18 ft.).
Energy saving USB power supply with LED power indicator.
Designed and manufactured in the USA by Winegard, the antenna experts.

This Certified Refurbished product is authorized Factory Refurbished, shows limited or no wear, and includes all original accessories plus a 90-day....
Embedded Ultra Low Noise Amplifier with Clear Circuit Technology (1.0 dB typical noise figure).
Dual-band amplified HDTV reception up to 50 miles/Extra Long Quality Coax (18 ft.).
Energy saving USB power supply with LED power indicator.
Designed and manufactured in the USA by Winegard, the antenna experts.