New 100kHz - 6GHz LibreVNA USB Based Full 2-port Vector Network Analyzer VNA

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LibreVNA (TM) is a USB based full 2-port vector network analyzer designed by Jankae. Using 3 ADCs to sample data simultaneously and using FPGAs for signal processing, it is capable of scanning over 10,000 points of full dual-port measurements in less than 1 second. The ultra-low noise power supply design and the use of 16bit ADC, together with the precision CNC's aluminum shielded housing, achieve up to 100dB of effective dynamics. Many aspects are already comparable to lab-grade VNAs, but this is still a work-in-progress project. Some design features may not be perfect, especially the performance will drop when the frequency is higher than 3GHz, please fully understand the possible limitations before buying this machine. If you have any suggestions for future releases, please feel free to contact us as well.
Note 1:Due to structural limitations, S12 isolation is 10dB worse than S21. Above 3GHz, the performance decreases with increasing frequency, and the port isolation is only 50dB at 6GHz. Below 1MHz, the performance decreases with decreasing frequency, and the effective dynamic decreases to 70dB at 100kHz. Note 2:The use of higher accuracy calibrators allows for higher precision measurements. Note 3:The output power may decrease when the frequency is lower than 1MHz or higher than 3GHz.
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We accept paypal only
Shipping
1.Items are shipped from china.we will send out within 1 bussiness day after receive the payment.
2.We only ship to ebay confirmed address. So before bidding,  please kindly verify your ebay address.
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Shipping to USA takes 8-18 days in normal condition by E-packet with tracking number.
Shipping to most other countries takes about 12-30 days via Economy Int'l Airmail.L
ess than , without free tracking number,if you request tracking number,please send ebay message to us.
Over ,with tracking number free.The shipping time depends on your location and local postal service,as well as the  weather condition along the shipping,sometimes may take longer,.please send ebay message to us if the package is not received.
4.Express shipping: DHL/FEDEX/EMS,Extra  -- will be charged for the first 500 grams for most countries. Send ebay message to us if  you need this service.
Returns Policy
1. Customer satisfaction is our top goal. We believe our items are so outstanding. All products are quality checked. They are new and in good condition when shipped to our customers. We are convinced you will be happy with your Purchase.
2. If product is defective or damage upon arrival, or wrong product shipped, please send ebay message to us immediately. Returns accepted within 30 days of delivery date and item must be in original new condition.
3. Please send ebay message to us first if you have any problems/questions/concerns. We will be happy to resolve any issues you may have in a cordial and friendly manner.