Check the listing for details. 4GHZ Scalar Network Analyzer Field Strength Meter Sweep Frequency KC901S+. Condition: New. Listed at 1455.00 USD. 4GHz Handle A powerful analyzer KC901S + RF Multimeter with vector antenna analysis function New Replace KC901S Frequency range: Transmission test 9kHz… 4GHz Reflex testing 9kHz… 4GHz Audio signal 3Hz… 10MHz Output level (typical): +3dBm or 2mW (1MHz - 3GHz) The built-in RF variable attenuator: 0 - 30dB 0.05-1.5V (audio 3Hz-1MHz) Input sensitivity: Better than -107dBm or 1μV (100KHz - 2GHz) Better than -87dBm or 10μV (2-2.8GHz) Max input level: All RF port DC10V, +20dBm S21 test range (typical): 100dB（1MHz—1GHz，in 100KHz about 60dB） 70dB（1——2GHz） 60dB（2——3GHz） Resolution: 1Hz Frequency, 0.01dB Level, 0.01°phase, pressure 0.1hPa,0.1m altitude. The level of uncertainty (typical values, @25°C): + 1.5dB (spectrum test, REF=20dBm) ，+ 3dB (spectrum, intensity, pattern) + (0.5+0.05L) dB (S21 test, direct calibration, insertion loss L≤60dB) -3dB (+1dB, loss, vector SOL calibration, -3dB≥RL≥-25dB) Absolute orientation (more than 90% interval is better than this value): 18dB (3MHz, 15MHz, 2GHz – 3GHz) 20dB (15MHz-2GHz) The relative orientation (after vector SOL calibration, the calibrator’s return loss better than 48dB, 90% confidence interval) 45dB (3MHz-2.5GHz) 30dB (1MHz-3MHz, 2.5GHz-3GHz) 20dB (300KHz-1MHz) Phase relative uncertainty (typically, 3 minutes of preheating, continuous operation mode) 1°(3MHz - 1GHz) 5°(1GHz - 2.5GHz, 1MHz - 3MHz) 7°(2.5GHz - 3GHz, 300KHz - 1MHz) Except 20,45,50,100,750,1500MHz ±15kHz Z and R range: 0-999 ohms X: ±0-999 ohm 1000-9999 ohm value for reference only Uncertainty (25-200 ohm range): + (2.5%+5) ohm Frequency stability: + 1ppm/year@25 C Barometer Pressure range 300-1100hPa Pressure uncertainty 3hPa (0~45°C) The altitude range -100 - 9000m Measuring speed 2ms/, scanning a screen about 1 second (slow, 450pt) The instrument can be set more speed, but the error increases. The user can according to the demand for speed and accuracy demand of weigh options. Power voltage: 11.5V…… 32V (external power supply); 6.5…… 8.4V (battery) 105V…… 230V, 50/60Hz (DC adapter input) Battery life (filled with batteries, typical values, @15°C): 7 hours (intensity, spectrum, signal source); 5 hours (S21 or S11, including the insertion loss testing) 20 hours (STOP state, the brightness of the display screen 10%) Temperature and humidity range allows work: -20-65°C (external power supply, battery power supply in the range depends on temperature of the battery characteristics) 10%-90%R.H., no condensation Size: 200 * 114 * 46mm (length * width * thickness) Quality (including battery): Net weight of host machine: less than 1.2kg Packing: total quality about 2.0kg KC901S+ 4GHz Handheld Network Analyzer KC901S+ is a multipurpose RF instrument integrating a VNA (vector network analyzer), spectrum analyzer, field strength meter, and an extra low-frequency signal source. It can do complete single port vector measurement and 2-ports simple vector network analyzing. The differences between the KC901S+ and the KC901S KC901S+ inherited the advantages of KC901S, and made great improvements. The frequency range of the KC901S+ from 9kHz to 4GHz. Main Features Vector network analyzing up to 4GHz 1Hz frequency step Good accuracy and anti-interference ability Abundant functions and easy to carry (Weight less than 1kg) Main Functions Transmission measurement (Filter adjustments, measuring amplifiers, verifying directivity of antennas) Reflection measurement (Impedance matching network adjustment, antenna feeding system quality evaluation) RF source plus an extra audio signal source Spectrum display and field strength observation (potentially used for inspecting a radio station’s emission performance, or for searching for the interference sources) Recommended Applications KC901S+ is mainly used for adjusting various RF circuits, such as filters, amplifiers, splitters, combiners; testing input/output impedance, evaluating antenna feeding system and detecting equipment’s signal amplitudes at all level. It can also do filed strength measurement, which is useful during miscellaneous kinds of search for interference source etc. Combining intelligence in the community, KC901S+ is the tool to study RF for students and hobbies. In professional situations, it is used in communication engineering, antenna manufacturing, daily maintenance of broadcast, RF circuits development and so on. KC901S+ improves working efficiency, ease the weight burden and improve working quality. Six basic functions of KC901S+: reflection test(S11), Transmission test(S21), spectral view(SPEC), filed intensity(FILED), RF source (RF SOURCE), audio frequency source(AF SOURCE). MODE is used to select function. The equipment shifts between function menu and function selection menu by using MODE a couple of times. In most cases, MODE, equal to “HOME”, turns the screen back to the function menu or function selection menu, so it is frequently used. 12 The typical application of Reflection Measurement (S11) is measuring the standing wave of antenna. The right port should be chosen. Reflectometer is a kind of vector function with various display modes, selected in FORMAT menu. In Smith Chart and impedance display, the second soft menu from the left provides more display modes. Access: press MODE and then select (S11). (FORMAT) in the soft menu decides the display mode of measuring result. The typical application of S21 is measuring amplitude-frequency characteristics of filter or amplifier and gains of antenna. The right RF port is to output signal, and the left one is to input. Access: MODE and then press S21. Insertion Loss Measurement is a special type of transfer measurement, characterized by high respond speed. As a result, it applies to the fine tuning of filter and measurement gains of antenna. In order to keep consistence with the operating habits of ordinary receivers, the entry into Insertion Lost Measurement is set in Field mode. Access: firstly MODE, and then press FIELD, finally press Insertion to make “GEN ON” appear. The typical application of SPEC is monitoring the occupancy and the interference of band and adjusting circuits producing RF signals except 45 MHz.KCSA-R100 is connected to find unidentified emission source. Access: MODE and then press (SPEC). FIELD applies to not only measurement field strength coverage but also searching the amplitude of RF. The port of 901S is capable of DC isolation so as to externally connect probes to directly search the signal value of receiver and transmitter. It is necessary to match impedance and concatenate attenuator when detecting transmitter. As long as experiences are got, FIELD is used to detect emission the radio station to find fault in time. Access: MODE and then press FIELD. 13 RF SOURCE produces a milliwatts signal, with an application of transmitting weak signals to the air to determine the sensibility of radio station from a close distance, particularly the sensibility of relay station. It is ha ndier to use the small signal for experienced users. More externally connected attenuators further develop the applications of signal source. To some extent, RF Source can adjust the signal level with the help of a built-in attenuator. The output attenuator plays the role as an amplitude modulator to carry out ASK. If the output attenuator has applied to adjusting output range, the used decrement which has been used is unable to modulate. As a result, the modulation degree conflicts with the output attenuation. When output attenuation increases, the modulation degree that can be used reduces. Access: Press MODE to select NEXT, and then press RF SOURCE in menu. AF SOURCE produces a low frequency signal with a typical function of adjusting the voice-grade channel of electronic equipment. Because AF SOURCE, with various modulation modes, produces the firm output of 50MHz, it is used to adjust RF circuits under 50MHz. In actual, AF SOURCE can be set in a high frequency (but does not guarantee indices). With the help of its harmonic wave, it can be used to debug the sensitivity of radio stations. Access: Press MODE and then select AF SOURCE in menu. 1.Your valid phone number is very necessary for the shipping, otherwise we can't guarantee that the package would safely arrives. 2. Any Customs tax applied to this package should be covered by buyers. 3.As has been stated on the eBay item description, Import duties, taxes and charges are not included in the item price and shipping charges. These charges be at the buyer responsibility. meanwhile the customs tax depend on the buyer local customs office. What in Package: 1 x 901S+ Network analyzer 1 x Power adapter (charger) 1 x User's Manual Contact Us: 1. We have always been trying to provide the best service and reliable products for every customer, however, accident may happen sometimes, please contact us to resolve any issue before leaving a negative feedback. 2. Please contact us by "Ask a question". Payment 1. Payment methods accepted : Paypal only. 2. Payment must be received within 7 business days of auction closing. Shipping 1. We ship your orders within 1-2 business days after the payment received. 2. Item shipped via Singapore Post or HongKong Post , It takes about 7-14 business days (USA,CA,AU,UK).others country 10-20 business days(Brzil,India,RU),Exact delivery time depends on postal process. 3. 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