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Decodificador para Cable Visión?

Buenas,

Cuando uno contrata el servicio de tv por cable de Cable Visión existe la posibilidad de adquirir un par de canales para adultos por una cuota mensual extra en mi opinión muy alta.
Con el servicio regular los canales están disponibles pero codificados, yo he visto anuncios de cajas decodificadoras e inclusive de gente que hace trabajos en VHS para que decodifiquen señales de cable.

Alguien sabe si estas cajas servirían para estos canales y adonde las puedo conseguir o algún otro consejo?

Tuanis.
 
#1 en FACTURA ELECTRÓNICA
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Code:
Required Materials: 
(1) Radio Shack Mini Box (Part #270-235) 
(1) 1/4 Watt Resistor, 2.2k - 2.4k Ohm (Part #271-1325) 
(1) 75pf - 100pf Variable Capacitor (special order) 
(2) F61a Chassis-type Coaxial Connectors (Part #278-212) 
12in No.12 Solid Copper Wire 
12in Rg59 Coaxial Cable 
Directions: 
1) Bare a length ************SPAM/BANNEAR************ No.12 gauge solid copper wire and twist around a 3/8" nail or rod to form a coil ************SPAM/BANNEAR************ 9 turns. Elongate the coil to a length ************SPAM/BANNEAR************ 1-1/2" and form right angle bends on each end.

2) Solder the variable capacitor to the coil. It does not matter where you solder it, but close to the center facing up is the most convenient place. NOTE: when placing the coil in the box, it must be insulated from the mini-box. Glueing a piece ************SPAM/BANNEAR************ rubber to the bottom ************SPAM/BANNEAR************ the box and secure the coil to it with plastic ties can easily do this.
3) Solder a 1" piece ************SPAM/BANNEAR************ bare coaxial wire to each end ************SPAM/BANNEAR************ the coil 2 1/2 turns in from the end. Drill a hole on each side ************SPAM/BANNEAR************ the mini-box and install the two coaxial connectors in the hole's using lockwashers. Solder the 1" coaxial wires to the connectors. 
4) Solder the resistor to the center ************SPAM/BANNEAR************ the coil and ground other end ************SPAM/BANNEAR************ resistor to the mini-box using solder lug and small screw. 

5) Drill a 1/2" diameter hole in the mini-box cover to permit adjustment ************SPAM/BANNEAR************ the variable capacitor from the outside. 

6) Inspect the device for defects in workmanship and place cover on mini-box. Tighten securely. 

7) Place the device in line with existing cable on either side ************SPAM/BANNEAR************ the converter box and connect to television set with the short piece ************SPAM/BANNEAR************ RG59 coaxial cable. 

8) Set television to a desired channel to be descrambled, using a plastic (nonmetallic) screwdriver, adjust the variable capacitor slowly until the pictures tune in.
 

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