Review on 📡 1PC GSM 3G Module Antenna 824-960M / 1710-2170Mhz CDMA WCDMA Aerial with SMA Male Connector, 5cm Length by Lawrence Reuter

I bought this antenna to install an SDR radio to use the P25 to receive local police. When I use the antenna that came with the SDR I get a clean signal. reception, and the waterfall display shows clarity with lines for frequencies with activity. With this antenna, the waterfall display shows granularity with fuzzy lines for frequencies with activity and no signals are being received. I bought this to make SDR easier. The standard antenna has a cable on a nearby table. This antenna screws directly into the SDR for a cleaner installation. But it just doesn't work. I will return this antenna.