Bids Are Invited For Acquisition Of Isdb-T Digital Sharing Rack In The Uhf Band Connectors And Cables With Specifications And Budgets Upon Request From The Municipal Administration Secretariat.

Lot 1 - Sharing Rack For Six Digital Tv Transmitters Of Up To 50 Watts Of Power That Operate Independently Of Each Other With Brazilian Digital Tv Standard Isdb-T Uhf Band. Allows Operation Completely Independently Of Each Other In The Form Of Detachable Vertical Drawers On The Fully Scalable Front Panel In Order To Add New Transmitters From One To Six, Only With The Addition Of The Transmitter And Its Respective Filters, Where An Analog Rf Combiner In Uhf With Constant Impedance Capable Of Receiving 11 Is Installed In The Rack 5-Pole Filters With Two Nots In Subcritical Mask With N`` Female Type Connectors, This Combiner Must Be Designed With Two Modules One For The Filter Inputs, Designed With Five Hybrid Combinators Of Three Dbs Arranged In Line With 10 Inputs With Type Connector N`` Female And Ten Outputs With The Same ``N`` Female Connector Together With Five Rf Dc Loads At 1Ghz Of At Least 10 Watts Of Power With Type N Male Connector, And For The Filter Outputs, Five Hybrid Combinators Of Three Dbs With Input And Outputs With N`` Type Connectors Also Designed In The Form Of A Line Where At The Output Of It Will Come Out To Antenna Connection With Female N`` Type Final Connector This Analog Rf In Uhf Combiner Set, Of Constant Impedance , It Must Be Connected To The Top Of The Rack With A 50 Ohm General Flage Type Eia 7/8 Output Connector. The Rack Must Have A Two-Phase 110/220Vac Power Input With A Three-Pin Connector Being Phase-To-Phase And Neutral And Earth Terminal. It Must Have A Network Protector Where Its Input Has Four Varistors With An Operating Voltage Greater Than 250 Vac, Each Duly Protected With A Fuse Of 10 Amps Each, Spark Gap, Passing Coil Between Input And Output With A Minimum Of Twelve Turns Of Wire On The Core Of Ferrite, Its Printed Circuit Board Must Be Double-Sided Fiberglass And At Its Output At A Minimum Know... (As Per Notice), Lot 1 - Panel Type Broadband Antenna With Horizontal Polarization, Composed Of At Least Four Dipoles Arranged In A Vertical Linear Manner Interconnected In A Network That Operates In A Broadband Manner Comprising Channels 14 To 51 In Uhf With A Return Loss Across The Entire Band Exceeding 23 Db`S. Its Horizontal Irradiation Diagram Must Have A Minimum Opening Of 70 Degrees And A Minimum Vertical Elevation Of 20 Degrees. It Must Support Input Power Of Up To 1000 Watts In Uhf With Eia 7/8 Type Connector Made Of Brass With Silver Plating. It Must Withstand Winds Of Up To 140 Km/H, Must Be Designed With An Aluminum Structure, Brass And Fiberglass Radome With Uv Protection, And Have Dimensions Smaller Than The Maximum Width: 358 Mm, Maximum Height 250 Mm, Maximum Length. : 980Mm. It Must Have A Fixing Support With The Possibility Of Vertical Tilt. It Must Have An Impedance Of 50 Ohms And A Gain Greater Than 10 Db`S., Lot 1 - Cable For Connecting The Sharing System To Antenna, Cellflex, Coaxial, 7/8Cellflex, Lot 1 - Phalanx Connector With Inner For Cable For Connecting The Sharing System For Antenna, Coaxial 7/8 Cellflex