The ST321R-SF3SNF(CWH) from Sinclair Technologies is a Antenna with Frequency 450 to 470 MHz, Bandwidth 20 MHz, Gain 2.1 dBi, Power 50 W, Operating Temperature -40 to 70 Degree C. Tags: Monopole. More details for ST321R-SF3SNF(CWH) can be seen below.