⟩ What are the different types of GSM antenna?
ANDREW (65*, 90*)
KATHREIN,
TIL-TEK,
ALGON.
(THEY ALL ARE THE DIRECTIONAL ANTENNA'S USED BY THE TELECOMMUNICATION SERVICE PROVIDER OPERATOR'S. LIKE AIRTEL, VODAFONE, IDEA, B.S.N.L, TATA-DOCOMO, RELIANCE ETC)