The ST321R-SF7SNF(CWH) from Sinclair Technologies is a Antenna with Frequency 435 to 455 MHz, Bandwidth 20 MHz, Gain 2.1 dBi, Power 50 W, Operating Temperature -40 to 60 Degree C. Tags: Monopole. More details for ST321R-SF7SNF(CWH) can be seen below.