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-
- I don't know if this works in Victoria, I'll post in the next month
- or so once I've tried it, and tell you the results.
-
- With most of the cable companies
- scrambling their signals on most all
- new and some old channels I thought I'd
- update and revise my first version
- (1.0) of Pay Tv Decoder Plans.
- Due to different scrambling systems,
- you might find it neccesary to change
- the range and values of the variable
- capacitator. I've also added a
- wiring diagram to help you with design-
- ing the circut. If you ha
- ve any
- questions just leave a message on the
- board listed at the end of the article.
-
- (Tom) Hackerman
-
-
- ///PAY TV DECODER PLANS///
- Version 2.0
-
-
- ///MATERIALS REQUIRED:///
-
- 1 - Radio Shack mini-box ( #270-235)
- 1 - 1/4 watt resistor, 2.2k-2.4k ohm
- (RS #271-1325)
- 1 - 75pf-100pf variable capacitor
- (Very hard to find)
- 2 - F61a chassis-type coaxial
- connectors (RS #278-212)
- 12" - No. 12 solid copper wire
- 12" - RG59 coaxial cable
-
-
- ///INSTRUCTIONS///
-
- 1. Bare a length of No. 12 gauge solid
- copper wire and twist around a 3/8"
- nail or rod to form a coil of 9 turns.
- Elongate coil to a length of 1 1/2"
- inches and form right angle bends on
- each end.
-
- 2. Solder the varible capacitor to
- the coil. It doesn't matter where you
- solder it, it still does the same job.
- The best place for it is in the center
- with the adjustment screw facing upward
-
- Note: When it comes time to place coil
- in box, the coil must be insulated from
- grounding. This can b
- e done by crazy-
- glueing a piece of rubber to the bottom
- of the box, and securing the coil to it.
-
- 3. Tap coil at points 2 1/2 turns from
- ends of coil and solder to coaxial
- chassis connectors, bringing tap leads
- through holes in chassis box. Use as
- little wire as possible.
-
- 4. Solder resistor to center of coil
- and ground other end of resistor to
- chassis box, using solder lug and small
- screw.
-
- Diagram: Your circut and design should
- look something like this:
-
- ----------------------------
- !
- !
- ! !
- ! C !
- ! -----------F16a
- G 2.2k O -- !
- N----\/\/\--- Vc !
- D 1/4w I -- !
- ! -----------F16a
- ! L !
- ! !
- ! !
- ----------------------------
-
- 5. Drill a 1/2" diameter hold in mini-
- box cover to permit adjustment of the
- variable capacitor from the outside.
- Inspect the
- device for defects in
- workmanship and place cover on mini-
- box. Tighten securely.
-
- 6. Place device in line with existing
- cable on either side of the coverter
- box and connect to television set with
- the short piece of RG59 coaxial cable.
- Set television set to HBO channel.
-
- 7. Using a plastic screwdriver (non-
- metallic), adjust the varible capacitor
- until picture tunes in. Sit back,
- relax, and enjoy!!!
-
-
- Have fun...
-
- (Tom) Hackerman
-
- O S U N Y B B S
- (914) 725 - 4060
-