Review on Diamond (Original) SRH77CA Dual-Band High Gain Handheld Antenna: Enhanced Reception from 120~900 MHz, 440 MHz Gain, 10W Power, 15" Length by Jeff Rubio

I needed to adapt it to my Uniden SDS100 scanner, the plastic cover around the SMA antenna connector was too narrow so I put this antenna on a lathe and scales it to the base diameter of the stock Uniden antenna that came with the unit. The 155mhz police and fire bands have REALLY improved, seems to have clearer reception for some things in the 450mhz range, and there hasn't been any negative impact on the 850mhz channels either. Very glad I bought this. Please note that Diamond makes a similar antenna with a BNC adapter that can be used with the Uniden BNC-SMA adapter that comes with the SDS100 if you don't feel like mounting a new antenna on a lathe .