Diamond BC102 XXL VOX hands free functionality VOX hands free functionality The AOR ARD25 APCO Decoder allows you to receive standard (unencrypted) APCO Project 25 digital signals via an analog receiver with a 10 The BC 102 is supplied complete with mounting material for masts with a diameter of 30 to 60 mm This means that the antenna offers more gain on the same length and is more precisely tuned to the operating frequency