Check the listing for details. SS11 Field Strength Power Test Portable RSSI Meter & Antenna Instrument. Condition: New. Listed at 76.25 USD. Hot Sale SS11 Field Strength Power Test Portable RSSI Meter & Antenna InstrumentDetailFeatures:The appearance is simple and efficient, beautiful and generous.Frequency bandwidth, high sensitivity. 100KHz-3000MHz (with antenna ), please use different frequency antennas to test signals with different frequencies for better effect and sensitivity)Build-in Battery .The pointer amplitude can be adjusted (to protect the meter)Built-in automatic damping function, which is the buffer function, prevents the needle from swinging too fast and causing damage.Small size, easy to carry, size: 75 x 100 x 64mm (excluding the raised antenna part) Specifications:Model No. SS-10Frequency Range: 100KHz -3GHz Size without Socket : 75 x 100 x 64mm Antenna (in ) Interface: SMA Female Net Weight : 240g (not include antenna)Package include1x SS-11 Field Strength Meter1x SMA MALE UHF Telescopic Antenna1x English Instructions Instructions for use:Before use, please rotate the "amplitude adjustment" to the left most end. The length of the antenna to be pulled depends on the frequency of the test. It is better to have 1/4 wave as much as possible. The handheld walkie-talkie is about one meter away from the field strength meter. Don't be too close! In order to avoid the signal is too strong to burn the field strength meter! Then press the walkie-talkie PTT button to make the walkie-talkie enter the launch state. At this time, the pointer of the field strength meter should have a signal indication. The stronger the signal, the greater the indication!Amplitude adjustment: If the field strength indicator indicates that the maximum range is exceeded, the "amplitude adjustment" can be adjusted to let the pointer indicate the appropriate position.Method for testing the maximum gain point of an antenna1. In order to change the frequency conveniently and quickly, you should use the keyboard to set the frequency walkie-talkie manually.2. Link the walkie-talkie and antenna feeders, place the field strength meter near the antenna (depending on the environment), place it within the vertical radiation angle of the antenna as much as possible, and the antenna planning method is best.3. Set the frequency of the walkie-talkie, press the launch button, observe the meter reading, and register the meter reading. Then set the walkie-talkie to other frequency points, let the walkie-talkie enter the launch state again, observe the meter reading and then compare the readings of each frequency point! You can know the best frequency/segment of the antenna under test!A typical field-strength meter is shown in Figure 1. This is a simple passive (unpowered) circuit in which radio frequency energy is intercepted by the antenna, rectified to DC, and then used to directly drive the meter. The maximum sensitivity of this circuit is based primarily on several factors:The gain of the antenna: How much of the signal is actually intercepted.The sensitivity of the meter movement being used.The nature of the diodes being used. Payment MethodShipping PolicyReturn/RefundContact UsPayment Method Payment accepted by Paypal ,If you do not have Paypal account,Please sign up at www.paypal.com Payment must be received within 7 business days of auction closing. Shipping Policy We ship it out from China. We ship the package to your paypal address. please make sure you can receive by it. All items are shipped within 1-5 days after payment cleared. Return/Refund 1. In our store, you will enjoy 60 days return/refund guarantee (Excluding misuse of the item and damaged item). 2. If the item you received is faulty, damaged or incorrect, or any further problems, you can return it for replacement or refund, please contact our customer service on eBay within 30 days from item received. 3. For damaged items on arrival, please contact us immediately, sending us an email with a photo is preferred. We will offer solutions to such cases. Full refund or replacement will be guaranteed.Contact Us Any question,feel free to contact us freely. All emails will be answered within 24 hours. If you do not receive our reply, please kindly resent your email. On Jan 24, 2024 at 01:47:53 PST, seller added the following information: