The SG401/SD210D-SF3/F2P4SNM from Sinclair Technologies is a Base Station Antenna with Frequency 138 to 174 MHz / 768 to 869 MHz, Frequency Band 1 138 to 174 MHz, Frequency Band 2 768 to 869 MHz, Gain 2.1 to 4.6 dBi, Vertical Beamwidth 68 to 80 Degrees. Tags: Dipole. More details for SG401/SD210D-SF3/F2P4SNM can be seen below.