Flat panel type antennas are reported for the reception of digital terrestrial TV on technical standards using the COFDM modulation frequency, such as ISDB-T standard used in Argentina.
Step 1: Materials and Tools
-PVC tube 4cm of diameter and 80 cm length
- Galvanized wire 2.7mm
- Wire galvanized or copper 0.8 mm
- Galvanized wire mesh
- 4 Rectangular pieces of plastic
- Bolts, nuts and washers
- Threaded rod 6mm
- Antenna adaptor
Step 2: Begining to Work...
A) Open four windows about 3 cm wide, for plastic parts, 20 cm equidistant from one another.
B) Fold the 2.7 mm galvanized wire as V, let each arm of 20 cm and the distance between centers 12 cm
C) Drill plastic parts with three holes, one in the center and one at each end
D) Screw plastic parts to the pipe and the wires in V (dipoles) in each of its ends
Step 3: Reflecting Mesh
E) Cut a rectangle of mesh wire 2cm larger than the rectangle formed by the four dipoles hubicados already in place.
D) Near the ends of the mesh pierce the wire galvanized 2.7 mm, with a loop at the center
Step 4: Installing the Reflecting Mesh
E) Present the wire mesh above the antenna so that it is centered with respect to the dipoles, mark the position of the loop in the PVC pipe and drill pipe.
F) Cross two pieces of threaded rod in PVC tube, screw and insert the mesh wire in her loops. This has to be separated from 7 or 8 cm of the PVC pipe.
Step 5: Connections
G) With galvanized or copper wire (0.8 mm) make the connections according to the diagram of the following step.
Step 6: Diagram an Final Connection
Following the connections of the dipolos we install de antenna adaptor.
Be carefull with the connections of the dipolos, it will be well separated that one circuit (red), not touch each other(blue)
Versión en español