Great indoor antenna!
The antenna is great, seems like a perfect indoor antenna! The tuning feature allows to cut all the unwanted strong AM signals to avoid overload and phantom signals on HF and lower. Also the antenna acts better in VHF from 30 to 200-300 MHz than any indoor antenna I've used. Furthermore, you can use it as a portable scanning amplified whip, just set the switch to "5" and you'll get the full 0.1 to 500 mhz range covered with no tuning necessary. The antenna has good match for 50ohm receivers so you don't need some expensive receiver to use with it, it's perfect to use with mid-priced SDRs like the Airspy or SDRplay.
For best reception it is crucial to set the loop to the right place. My advice: buy or made the connection cables to separate the loop unit and the operation unit, turn on your receiver, tune it to some known station, take the loop and walk around your room or balcony with it to find the place where the signal strength is the best. Don't forget to rotate the antenna as it helps to cancel noise. The best reception actually can be somewhere inside the room while on the window it can be very poor!
The only disadvantage of the antenna is its price. Good outdoor antennas always have better perfomance for lower prices, so buy this indoor loop only if you really can't put a good antenna outside, otherwise you'll be disappointed.
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