New 35MHz~4.4GHz Handheld Spectrum Analyzer 4.3 inch LCD Display + Battery

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New 35MHz~4.4GHz Handheld Spectrum Analyzer 4.3 inch LCD Display + Battery
Introduction
1. The main chip STM32F407 (clocked at 168M)
2. 4.3 inch TFTLCD (480 * 800) display
3. All aluminum alloy shell + rotary encoder control.
4. Build in 4000mAh battery,English interface.
5. Spectrum display range: 35M-4400Mhz; input impedance: 50 ohms.
6.RBW: 5 gears adjustable 10khz, 50khz, 100khz, 200khz, 500khz
7.Screen scanning points: 700 points.
8.Scanning span: 7M (10Khz), 35M (50khz), 70M (100Khz), 140M (200Khz), 350M (500Khz).
9.dBm range: -80dB ----- 10dB (supports manual adjustment of the calibration range). There is no amplifier circuit inside. If you need to measure small signals, you need an external amplifier.
10.Maximum access signal: 10dB.
11.Working mode: Super heterodyne scanning spectrum analyzer, single scanning time 800ms.
12.Product specifications: 145mm * 70mm * 30mm. Weight: 200g.
13.Scope of application: walkie-talkie, toy remote control, 2.4Gwifi. 15. Mix the local oscillator signal and the external test signal to obtain the difference frequency signal, and calculate the external test signal amplitude through the detector. Using a high-precision VCO signal source, the heterodyne signal frequency can be measured very accurately. Because the scanning range is very large (35M-4400M), due to cost reasons, there is no dedicated detection circuit for the external test signal. There may be errors in the measurement amplitude. Therefore, the product has increased the magnification and displacement parameters. The display is adjusted and calibrated.
Package include:
1 x Spectrum Analyzer
1 x USB cable
Payment
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.
3.
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.
Less 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 you didn't get your package.
4.Express shipping: Extra  -- will be charged for the first 500 grams for most countries. Send ebay message to us if  you need this service.
Terms of sale
1.If you are not satisfied when you receive your item, please return it within 30 days for a replacement or money back.   Please send ebay message to us before you return it.
2.If item is defective in 30 days, We will send you a replacement without extra charger, or offer refund after we receive the defective item.
3.If item is defective after 30 days, you can still send it back to us. We will send you a new one after receiving the defective item. But you have to pay the extra shipping fee.
About us
We are honest seller and do our best to serve you.
So if you have any concerns,please don’t hesitate to send ebay message to us.