The SD214E-SF2P4SNM(D00B-ABK) from Sinclair Technologies is a Base Station Antenna with Frequency 138 to 174 MHz, Frequency Band 1 138 to 174 MHz, Gain 10.6 dBi, Vertical Beamwidth 17 Degrees, Horizontal Beamwidth 210 Degrees. Tags: Dipole. More details for SD214E-SF2P4SNM(D00B-ABK) can be seen below.