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Free Shipping Condition: New Location: China Frequency conversion passive mixer can be used in VHF/UHF. The mixer is located behind the low noise amplifier (LNA) and directly processes the RF after ... moreLNA amplification. 1 x Passive Mixer. The passive mixers adopt mini components design,compact and light weight.
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$5.50 Shipping Condition: New Location: China ADF5355 High frequency signal source colour screen module. - ADF5355 PCB beautiful appearance. - 1 x ADF5355 Module. - RF output frequency range:54 MHz~13,600 ... moreMHz decimal Fractional-N Frequency Synthesizer and round number N frequency division synthesizer.
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$3.00 Shipping Condition: New Location: China This is a 0~55MHz DDS Signal Generator. It is based on AD9850 chip and is very easy to operate. Supports 0~55MHz continual adjust at 1Hz step. VFO: Transfer ... morefrom VFO A to VFO B, or from VFO B to VFO A.
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Free Shipping Condition: New Location: United States Due to the high price of the network analyzer, there is no spectrum analyzer so easy to get. This item just solved the problem. So in the product we no ... morelonger with the power adapter but will be equipped with a screw-type adapter to facilitate the use of power.
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$2.99 Shipping Condition: New Location: China The AD9851 is a highly integrated device that uses advanced DDS technology, coupled with an internal high-speed, high-performance D/A converter and comparator, ... moreto form a digitally programmable frequency synthesizer and clock generator function.
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$3.88 Shipping Condition: New Location: 龙岗区, China Surface mounting technology improves interference immunity and operational life span. It can also output TTL electric level. u Adopt DDS technology to ... moregenerate accurate, stable signal with low distortion.
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$3.29 Shipping Condition: New Location: China Product Name:DDS Signal Generator Module 0-70MHz AD9851 2 Sine Wave and 2 Square Wave good SKU: 1870 Parsts No. Package: Brand: Quantity: 1, 2 sine wave ... moreand 2 square wave output AD9851: 0-70MHz After the 20-30MHz frequency harmonics increases. The waveform will be less and less clean Square Wave: 0-1MHz Low-pass filter with 70MHz. So the waveform better than SN Parallel and serial data input can be selected via a jumper DA produced the benchmark pin(PIN12) leads for easy adjustment to do the magnitude of the output waveform Application Comparator reference input voltage generated by the variable resistor. The resistor can be adjusted duty cycle square wave of different AD9851 module Using 30MHZ Active crystal AD9851 Clock frequency up to 180MHz. AD9851 has 6 octave Maybe you request $ 22.00 + free shipping $ 4.02 + free shipping $ 2.5 + free shipping $2.34 + free shipping $ 1.21 + free shipping For more quantity. Please contact us 1) We accept PayPal payment ONLY.
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Free Shipping Condition: New Location: 金东区, China MAX2870 23.5-6000MHz RF signal source signal generator module PLL VCO -4dBm~+5dBm with STM32 driver. 1 x RF signal source. 23.5MHz to 6.0GHz frequency ... morerange signal output. Onboard: 100MHz reference clock frequency.
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$3.50 Shipping Condition: New Location: China Via three serial interfaces to write data. 1PCS AD9833 DDS Signal Generator Module. Frequency excitation / waveform generation. Scan clock generator. ... moreModule Features onboard 25MHZ (accuracy of 50ppm) active crystal, stepping accuracy 0.1HZ.
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Free Shipping Condition: New Location: 金东区, China This is a 0~55MHz DDS signal generator. It is based on the AD9850 chip and is very simple to operate. ISB, USB, CW are three mode options. 1 x 0~55MHz ... moreDDS Signal Generator Direct Digital Synthesis HAM Radio VFO Wireless.
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$2.99 Shipping Condition: New Location: China Sine Wave Display: Effective Square Wave Frequency Range 100Hz-9.5MHz. Square Wave Display: Effective Square Wave Frequency Range 100Hz-1MHz.
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Free Shipping Condition: New Location: 金东区, China Frequency range: 27MHz. Connector type：BNC Male. Maximum Power Input-watts: 20W - perfect for Handheld Portable CB radios less than 20W. Works with a ... morevariety of Hand Held CB radios. Maximum power: 20W.
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Free Shipping Condition: New – Open box Location: Wilton, United States 2-Way SMA Power Divider. Pulsar Microwave. 20-1500MHz 1W. Date Code 1223.
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$3.74 Shipping Condition: Neu Location: China AD9850 DDS Signal Generator Module 0-40MHz 2 Sine Wave And 2 Square Wave Output Description AD9850: 0-40MHz. 2 sine wave and 2 square wave output. After ... morethe 20-30MHz frequency harmonics increases. The waveform will be less and less clean. Square Wave: 0-1MHz. Low-pass filter with 70MHz. So the waveform better than SN. Parallel and serial data input can be selected via a jumper. DA produced the benchmark pin(PIN12) leads for easy adjustment to do the magnitude of the output waveform Application. Comparator reference input voltage generated by the variable resistor. The resistor can be adjusted duty cycle square wave of different. Active AD9850 125MHz crystal oscillator modules. Dimension:4.5cm x 2.6cm, Package Includes: 1 X AD9850 DDS Signal Generator Module 0-40MHz Test Equipment, Payment Policy 1. We Do Accept Paypal only. 2. eCheque will be held until cleared. 3. Great appreciate for prompt payment. Unpaid item will be filed without receiving payment in 7 days after listing ended. Shipping&Handing 1. All items will be shipped to buyer's ebay address. Before you pay. Please make sure your address in ebay matches the address you would like us to ship to. 2. We ship within 2 business days(weekends and public holidays are not cognized as business days) after full payment is received and cleared. Generally. Delivery time is 2-4 weeks. Other countries or remote areas may take longer. 3. As there are weight and cubage restrictions on international order. We are unable to offer you any discount or combined shipping for multiple items. All items are shipped separately. There is no local pickup service. No third party shipping carrier will be used. 4. Import duties. Taxes and charges are not included in the item price or shipping charges. These charges are the buyer's responsibility. Please check with your country's customs office to determine what these additional costs will be prior to bidding/buying. Return Policy 1. We are committed to give you the best customer service possible. If for any reason yo
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Free Shipping Condition: New Location: Providence, United States Passive mixer has low conversion loss,respectively are ,. Frequency conversion passive mixer can be used in VHF/UHF.
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$3.00 Shipping Condition: New Location: China ◆ Amplifiable signal: function signal and arbitrary waveform signal. ◆ Compatible with all function and arbitrary waveform signal generators. FPA301 series ... moreDC power amplifier uses imported integrated devices, full-band amplification: sine wave, square wave, pulse wave, sawtooth wave, reverse sawtooth wave, triangle wave, electrocardiogram wave, saddle wave and noise wave, etc.
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$10.34 Shipping Condition: Used Location: Burnsville, United States We are located in Burnsville, MN.
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Condition: Used Location: Canada CONDITION :This item is TESTED & WORKING, being sold As-Is Final Sale. Hours of Operation: Monday to Friday 8:30AM to 5:00PM EST. We'll have an answer ... morefor you, usually within 1 business day.
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Free Shipping Condition: New Location: China Feature: 1. Simpler Work: Excess Noise Ratio, that is, the multiple of the thermal noise that the noise source exceeds the standard noise temperature ... moreT0. This refers to the poor strength when the spectrum is not connected to the noise source and after the noise source is connected.
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$39.50 Shipping Condition: Used Location: Newbury Park, United States The SNS series N4000A is a 10 MHz to 18 GHz noise source with nominal ENR 6 dB. The N4000A noise sources has a choice of connectors, with an APC 3.5(mm) ... moreconnector as standard. Keysight Agilent DSA91304A 13GHz 40 GSa/s 4 CH Oscilloscope LOADED!
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$3.00 Shipping Condition: New Location: China AD9851 Clock frequency up to 180MHz, AD9851 has 6 octave. AD9851: 0-70MHz. AD9851 module Using 30MHZ Active crystal. Low-pass filter with 70MHz, so the ... morewaveform better than SN. the waveform will be less and less clean.
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$5.00 Shipping Condition: New Location: China FYA2050S DC~5MHz DC Amplifier 20W Power Amplifier Module X4 X2 Low Distortion For Signal Generators. The DC power amplifier uses imported integrated devices, ... moreFYA2050S DC~5MHz full-band amplification: sine wave, square wave, pulse wave, sawtooth wave, reverse sawtooth wave, triangle wave, electrocardiogram wave, saddle wave, noise wave and the like.
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$3.00 Shipping Condition: New Location: China Si5351-2VFO-150 Signal Generator 2 Channel Signal Source VFO-5351A V1.03 Square Wave Out 10K-150MHz. - 1 x Set of Signal Generator Module. Cycle selection ... morestep "1K", "10K", "100K", "1M". Rotate the encoder counterclockwise to decrease, and rotate the encoder clockwise to increase.
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Free Shipping Condition: New Location: China Feature: 1. Simpler Work: Excess Noise Ratio, that is, the multiple of the thermal noise that the noise source exceeds the standard noise temperature ... moreT0. This refers to the poor strength when the spectrum is not connected to the noise source and after the noise source is connected.
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$3.00 Shipping Condition: New Location: China The ADF5355 also contains hardware and software power-down modes. The wideband microwave VCO design permits frequency operation from 6.8 GHz to 13.6 GHz ... moreat one radio frequency (RF) output. A series of frequency dividers at another frequency output permits operation from 54 MHz to 6800 MHz.
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Free Shipping Condition: New Location: Canada This item is a new Suin SU4300 Noise Source with a maximum noise output of ≥0 dBm (400MHz Bandwidth). Output Noise: ≥ 0 dBm(400MHz Bandwidth). Flatness: ... more≤ 2.0 dB(20MHz ~ 400MHz per 40MHz bandwidth).
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Free Shipping Condition: New Location: China AD9850 DDS Signal Generator Module 0-40MHz 2 Sine Wave And 2 Square Wave Output Description AD9850: 0-40MHz. 2 sine wave and 2 square wave output. After ... morethe 20-30MHz frequency harmonics increases. The waveform will be less and less clean. Square Wave: 0-1MHz. Low-pass filter with 70MHz. So the waveform better than SN. Parallel and serial data input can be selected via a jumper. DA produced the benchmark pin(PIN12) leads for easy adjustment to do the magnitude of the output waveform Application. Comparator reference input voltage generated by the variable resistor. The resistor can be adjusted duty cycle square wave of different. Active AD9850 125MHz crystal oscillator modules. Dimension:4.5cm x 2.6cm, Package Includes: 1 X AD9850 DDS Signal Generator Module 0-40MHz Test Equipment, Payment Policy 1. We Do Accept Paypal only. 2. eCheque will be held until cleared. 3. Great appreciate for prompt payment. Unpaid item will be filed without receiving payment in 7 days after listing ended. Shipping&Handing 1. All items will be shipped to buyer's ebay address. Before you pay. Please make sure your address in ebay matches the address you would like us to ship to. 2. We ship within 2 business days(weekends and public holidays are not cognized as business days) after full payment is received and cleared. Generally. Delivery time is 2-4 weeks. Other countries or remote areas may take longer. 3. As there are weight and cubage restrictions on international order. We are unable to offer you any discount or combined shipping for multiple items. All items are shipped separately. There is no local pickup service. No third party shipping carrier will be used. 4. Import duties. Taxes and charges are not included in the item price or shipping charges. These charges are the buyer's responsibility. Please check with your country's customs office to determine what these additional costs will be prior to bidding/buying. Return Policy 1. We are committed to give you the best customer service possible. If for any reason yo
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$3.40 Shipping Condition: New Location: China Main AVR DDS V2.0 signal generator features DDS signals: sine, square, saw, rev saw, triangle, ECG and noise. 1PC DDS Function Signal Generator Module. ... moreDDS signal with variable amplitude and offset;.
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Free Shipping Condition: Used Location: Albuquerque, United States This Daihen AMN-50L-V RF Auto Matcher is used working surplus. The physical condition is good, but there are signs of previous use and handling. Model ... moreNo: RF Auto Matcher. Serial numbers or country of manufacture may vary.
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$3.99 Shipping Condition: New Location: China MAX2870 Signal Generator Module 6GHz RF Signal Source Phase-Locked Loop Module High Flatness Power. - Module: MAX2870. - Module output signal: RF signal. ... more- Module output interface: SMA (anti-oxidation nickel-plated type).
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Free Shipping Condition: New Location: China Unique design and perfect performance: Adopt advanced modulation system, built-in PLL frequency, audio pre-emphasis, limiter, low-pass filter circuit. ... moreSupports clear, strong and stable signal transmission, the stereo sound is very clear and the distortion is less than 0.5%.
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$25.00 Shipping Condition: Used Location: Israel Tested and working.
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$15.00 Shipping Condition: New Location: China 1 signal generator (JDS6600-15M 15MHz). 13,With pulse trains burst output function, allow the unit output 1~1048575 arbitrary pulse trains. output frequency(sine ... morewave) up to 60MHz(optional), 266MSa/s sampling rate and 14bits vertical resolution.
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$300.00 Shipping Condition: Used Location: Japan ANRITSU MS555B1 /01/02/03. Radio Commnication Analyzer. If you have any carrier account, We can use it.
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$9.88 Shipping Condition: New Location: China Model JDS6600. Host：JDS6600. 3 、 Using DDS direct digital synthesis technology to generate precise, stable and low distortion output signal. 18 、 Arbitrary ... morewave editing function: user can edit arbitrary wave on PC and then download to.
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$170.00 Shipping Condition: Used Location: Ukraine Low frequency signal generator G3-112/1 analog of NoiseCom, General Radio. Boonton, HP Agilent, Fluke and general Electric, but has the same or better ... morecharacteristics. This device can be used for wide measurement range. Low frequency signal generator G3- 112/1 with continuously adjustable frequency setup within each of six subranges. Generators low impedance output. Consistent for all levels of attenuator attenuation. Device low frequency signal generator G3- 112/1 has an effective system of output voltage stabilization. External synchronization input at frequency and signal rectangular in shape mode. Presence of autonomous power amplifier provides a high signal on high-resistance load. This device was also used in USSR and Russia army. So it has best quality. Longevity and permanence characteristic. Condition: NEW(not used. An old stock) Tested and 100% workable. If necessary. We can provide calibration certificate from Government standardization institute(+145-265usd) Also we can provide other resistance. Capacitance and inductance standards, decade box and other etalons. Also we can provide other resistance. Capacitance and inductance standards, decade box and other etalons. If you haven’t found the needed item in my listing. Please contact me. I’ll try to help you. Technical characteristics of devices high frequency signal generators G3- 112/1: Frequency range- 10Hz- 10MHz(6 subranges) Frequency basic error: ±( 2 +30/ ƒ) 10Hz- 1MHz; ± 3% 1MHz- 10MHz; Device low frequency signal generator G3- 112/1 output voltage- 5V(50 Ohm) Output voltage attenuation: 0dB- 70dB with discreteness 10dB- built-in attenuator; 40dB- External attenuator; 12dB- continuously adjustable; Device low frequency signal generator G3- 112/1 output voltage changes at frequency(relative to voltage level at frequency 1 kHz) ± 1.5% 20Hz- 100kHz; ± 6% 100kHz- 10MHz; Harmonic coefficient: 0.5% 10Hz- 100Hz. 100kHz- 200kHz; 0.3% 100 Hz- 100 kHz; 1% 200 kHz- 1 MHz; 4%
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$2.99 Shipping Condition: New Location: China The AD9833 is a low power, programmable waveform generator that produces sine, triangle, and square wave outputs. No external components are required. ... moreThe AD9833 writes data through a three-wire serial interface.
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Free Shipping Condition: New Location: China Feature: 1. Simpler Work: Excess Noise Ratio, that is, the multiple of the thermal noise that the noise source exceeds the standard noise temperature ... moreT0. This refers to the poor strength when the spectrum is not connected to the noise source and after the noise source is connected.
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Free Shipping Condition: New Location: China Square wave / Triangle wave. ►High amplitude resolution: the minimum amplitude resolution can reach 1mV, amplitude range is 2mVpp~20Vpp. Sine wave frequency ... morerange. Square wave frequency range. Triangle wave frequency range.
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$86.66 Shipping Condition: Used Location: Manasquan, United States Noisecom UFX99CA Programmable Noise Generator. 5 to 1000 MHz. 5-44 (Internal noise Filter for CATV Upconverter Input 38 to 50 MHz). Actual Net Weight: ... more23 lbs. 1.5:1 VSWR.
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$6.00 Shipping Condition: New Location: China FY6900 series dual-channel function / arbitrary waveform generator is a high-performance and cost-effective signal generator. Rich shortcut keys simplify ... morecomplicated operations. It is especially suitable for electronic enthusiasts, scientific research institutions and high-tech enterprises, automotive repair and other fields.
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Free Shipping Condition: New Location: China 27Mhz antenna for use with handheld CB radios Cobra, Macon and Radio Shack with BNC connectors. Maximum input power watts: 20W (handheld portable CB radio ... moreless than 20W). Different antenna lengths have different antenna effects.
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$2.89 Shipping Condition: New Location: China Model: 5.8G 5800Mhz. Type: Sweep Source. 1 Signal Generator.
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Free Shipping Condition: New Location: United States Frequency conversion passive mixer can be used in VHF/UHF. The mixer is located behind the low noise amplifier (LNA) and directly processes the RF after ... moreLNA amplification. 1 x Passive Mixer. The passive mixers adopt components design,compact and light weight.
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$2.99 Shipping Condition: New Location: China This is a 0~55MHz DDS Signal Generator. It is based on AD9850 chip and is very easy to operate. Supports 0~55MHz continual adjust at 1Hz step. VFO: Transfer ... morefrom VFO A to VFO B, or from VFO B to VFO A.
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Free Shipping Condition: New Location: China Feature: 1. ADF4351 CHIP: The core chip of our RF signal module adopts ADF4351, following the official principles and optimizing the layout. Chip: ADF4351. ... moreOutput Signal Interface: SMA female head. The step size can be as small as 1K, and even 0.1K for low frequencies, based on the crystal frequency.
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Free Shipping Condition: New Location: China Frequency range: 27MHz. Connector type：BNC Male. Maximum Power Input-watts: 20W - perfect for Handheld Portable CB radios less than 20W. Works with a ... morevariety of Hand Held CB radios. Get the best signal for your radio.
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Free Shipping Condition: New Location: 金东区, China Frequency range: 27MHz. Connector type：BNC Male. Maximum Power Input-watts: 20W - perfect for Handheld Portable CB radios less than 20W. Works with a ... morevariety of Hand Held CB radios. Get the best signal for your radio.
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Free Shipping Condition: New Location: United States Precise low-noise 25M differential crystal vibration is adopted, with higher common mode suppression ability and phase discrimination frequency. Reserve ... moreexternal clock interface. Programmable 1/2/4/8/16/32/64 crossover output.
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$5.85 Shipping Condition: New Location: China
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$3.20 Shipping Condition: New Location: China Frequency excitation / waveform generation. Support universal plate (tunnel plate), a multiple-board pins are 2.54mm, can be easily welded universal board. ... moreWorking temperature range: -40 ~ + 105 ℃. hope you could understand.
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Free Shipping Condition: New Location: China Search our eBay Store! HF Matching Unit Industrial High Voltage RF Generator Power Source Module A45677 SKU: JV-BIN-C-HFMATCHING Condition: Used Packaging: ... moreOEM Warranty: 30-Day DOA Warranty This auction only comes with what is pictured or listed in the description. All parts. Accessories, cables, etc. are not included unless pictured or described. If in doubt, please contact us before purchasing. Click an Image to Enlarge New Page 1 HF Matching Unit Industrial High Voltage RF Generator Power Source Module A45677. P/N: A45677/09/10/11/12/13/14/15/16/17/18/19/20/21/22/23. Physical Condition: Good- Scuffs/scratches on the unit. Ports are in good condition. Functionality/Degree of Testing: We do not have the necessary resources to test this unit. Power cable is not included. Dimensions(L" W" H" 9 ¾* 8 ¾* 6 5/8 THE FDA DISCLAIMER BELOW IS ONLY FOR MEDICAL DEVICES. SVC ASSET MANAGEMENT. INC. MILPITAS. CA 95035(877)757-3863"The sale of this item may be subject to regulation by the U.S. Food and Drug Administration and state and local regulatory agencies. If so. Do not bid on this item unless you are an authorized purchaser. If the item is subject to FDA regulation, we will verify your status as an authorized purchaser of this item before shipping of the item. This unit has been used. It has been cleaned in accordance with the manufacturers guidelines by the medical facility from which we received it. All parts. Accessories, cables, etc. are not included unless pictured or listed in the description. If you require more information and specifications. Please contact the manufacturer and/or research online. As a liquidation house, we're unable to test every product and have limited technical knowledge. What you see in the description is all that is provided to us. Buying in Bulk Quantity If you wish to purchase in bulk(10+) Please contact us for a combined shipping rate. If we don't have enough units listed, we may be able to acquire more. Please call us for the latest inventory update
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Free Shipping Condition: New Location: 金东区, China 27Mhz antenna for use with handheld CB radios Cobra, Macon and Radio Shack with BNC connectors. Connector: BNC. Different antenna lengths have different ... moreantenna effects. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.
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$25.00 Shipping Condition: New Location: China FY3200-20MHz Dual-channel DDS Function Waveform Signal Generator Counter FY3200S. Waveform generator up to 12 bits wide, the output waveform is more delicate, ... morewaveform distortion is low. DDS function signal generator from this series is a multi-functional signal generator with high precision and high performance.
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Free Shipping Condition: New Location: China Precise low-noise 25M differential crystal vibration is adopted, with higher common mode suppression ability and phase discrimination frequency. Reserve ... moreexternal clock interface. Programmable 1/2/4/8/16/32/64 crossover output.
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$3.74 Shipping Condition: Neu Location: China AD9850 DDS Signal Generator Module 0-40MHz 2 Sine Wave And 2 Square Wave Output Description AD9850: 0-40MHz. 2 sine wave and 2 square wave output. After ... morethe 20-30MHz frequency harmonics increases. The waveform will be less and less clean. Square Wave: 0-1MHz. Low-pass filter with 70MHz. So the waveform better than SN. Parallel and serial data input can be selected via a jumper. DA produced the benchmark pin(PIN12) leads for easy adjustment to do the magnitude of the output waveform Application. Comparator reference input voltage generated by the variable resistor. The resistor can be adjusted duty cycle square wave of different. Active AD9850 125MHz crystal oscillator modules. Dimension:4.5cm x 2.6cm, Package Includes: 1 X AD9850 DDS Signal Generator Module 0-40MHz Test Equipment, Payment Policy 1. We Do Accept Paypal only. 2. eCheque will be held until cleared. 3. Great appreciate for prompt payment. Unpaid item will be filed without receiving payment in 7 days after listing ended. Shipping&Handing 1. All items will be shipped to buyer's ebay address. Before you pay. Please make sure your address in ebay matches the address you would like us to ship to. 2. We ship within 2 business days(weekends and public holidays are not cognized as business days) after full payment is received and cleared. Generally. Delivery time is 2-4 weeks. Other countries or remote areas may take longer. 3. As there are weight and cubage restrictions on international order. We are unable to offer you any discount or combined shipping for multiple items. All items are shipped separately. There is no local pickup service. No third party shipping carrier will be used. 4. Import duties. Taxes and charges are not included in the item price or shipping charges. These charges are the buyer's responsibility. Please check with your country's customs office to determine what these additional costs will be prior to bidding/buying. Return Policy 1. We are committed to give you the best customer service possible. If for any reason yo
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Free Shipping Condition: New Location: China Model: AD985. Item Type: Shortwave DDS Generator Module. Feature: 1. The DDS generator is made of PCB material, which is resistant to wear and has a long ... moreservice life. DDS generator is S LED display and standing LED display, 12V input and output.
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Free Shipping Condition: New Location: 金东区, China Frequency range: 27MHz. Connector type：BNC Male. Maximum Power Input-watts: 20W - perfect for Handheld Portable CB radios less than 20W. Works with a ... morevariety of Hand Held CB radios. Maximum power: 20W.
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Free Shipping Condition: New Location: 金东区, China Equipped with audio output function, supports 3.5mm stereo audio output, the output frequency is 1.5W, and the antenna interface adopts SMA interface. ... moreFast channel support for HAM bands. You can try.
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Free Shipping Condition: New Location: China AD9850 0~55MHz DDS Signal Generator For HAM Radio VFO SSB RIT 6 Bands Description: Features: This is a 0~55MHz(latest version. Firmware updated in 2013) ... moreDDS Signal Generator. It is based on AD9850 chip and is very easy to operate. Supports 0~55MHz continual adjust at 1Hz step. This generator has 78L05 voltage regulate. Input current at 200MA. Input voltage 8-9V would be the ideal voltage. Input voltage of 12V can only be used for short time testing. Otherwise will cause heat to board. 5p/6p connect to encoder as per photo. 7p of the middle connects to digital matrix input. 14p(8V GND) is 8V power supply from main board. If powered by main board. DDS does not need independent power supply. 1~6 correspond to 6 frequency bands: 3.8，7，9，14，18 or 21，27 or 29) ISB. USB, CW are the three mode choices. DT is signal from main board Keys& Connection interfaces: ENC: encoder switch MEM: switch for memory mode VFO: Transfer from VFO A to VFO B. Or from VFO B to VFO A. SSB: Working mode change: circulate from USB. LSB, AM, CW, and on and on. RIT: fine tuning to receiving frequency CAL: set functions KB-1 and KB-2 have common shared pin. But is not GND. How to operate: Press CAL. Power on, then we enter setting screen. Let go/release CAL. A: ENABLE 6XREFCLE: setting chip clock mode. Adjust frequency encoding setting. AD9851 set to 6-multiply frequency, AD9850 set to 1multiply frequency. Press CAL then quickly release to enter next step B. B: DDS-SYSTEM-CLK: Chip working frequency setting. Use encoder switch to adjust value. Operate in accordance with STEP key. AD9851 set at oscillator 6-multiply channel. AD9850 set at actual output of oscillator. Press CAL then quickly release to enter step C. C: MIN_RX_DDS_FREQ：Setting minimum working frequency. Use encoder switch to adjust value and in accordance with STEP key. Press CAL then quickly release to enter step D. D: MAX_RX_DDS_FREQ：Setting maximum working frequency. Use encoder switch to adjust value and in accordance with STEP key. Smaller than 60MHz would be OK) Pres
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