238 lines
3.5 KiB
Plaintext
238 lines
3.5 KiB
Plaintext
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With most of the cable companies
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scrambling their signals on most all
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new and some old channels I thought I'd
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update and revise my first version
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(1.0) of Pay Tv Decoder Plans.
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Due to different scrambling systems,
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you might find it neccesary to change
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the range and values of the variable
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capacitator. I've also added a
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wiring diagram to help you with design-
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ing the circut. If you have any
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questions just leave a message on the
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board listed at the end of the article.
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(Tom) Hackerman
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///PAY TV DECODER PLANS///
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Version 2.0
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///MATERIALS REQUIRED:///
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1 - Radio Shack mini-box ( #270-235)
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1 - 1/4 watt resistor, 2.2k-2.4k ohm
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(RS #271-1325)
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1 - 75pf-100pf variable capacitor
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(Very hard to find)
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2 - F61a chassis-type coaxial
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connectors (RS #278-212)
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12" - No. 12 solid copper wire
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12" - RG59 coaxial cable
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///INSTRUCTIONS///
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1. Bare a length of No. 12 gauge solid
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copper wire and twist around a 3/8"
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nail or rod to form a coil of 9 turns.
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Elongate coil to a length of 1 1/2"
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inches and form right angle bends on
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each end.
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2. Solder the varible capacitor to
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the coil. It doesn't matter where you
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solder it, it still does the same job.
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The best place for it is in the center
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with the adjustment screw facing upward
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Note: When it comes time to place coil
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in box, the coil must be insulated from
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grounding. This can be done by crazy-
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glueing a piece of rubber to the bottom
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of the box, and securing the coil to it.
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3. Tap coil at points 2 1/2 turns from
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ends of coil and solder to coaxial
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chassis connectors, bringing tap leads
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through holes in chassis box. Use as
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little wire as possible.
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4. Solder resistor to center of coil
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and ground other end of resistor to
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chassis box, using solder lug and small
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screw.
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Diagram: Your circut and design should
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look something like this:
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----------------------------
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! !
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! !
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! C !
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! -----------F16a
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G 2.2k O -- !
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N----\/\/\--- Vc !
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D 1/4w I -- !
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! -----------F16a
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! L !
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! !
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! !
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----------------------------
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5. Drill a 1/2" diameter hold in mini-
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box cover to permit adjustment of the
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variable capacitor from the outside.
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Inspect the device for defects in
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workmanship and place cover on mini-
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box. Tighten securely.
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6. Place device in line with existing
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cable on either side of the coverter
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box and connect to television set with
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the short piece of RG59 coaxial cable.
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Set television set to HBO channel.
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7. Using a plastic screwdriver (non-
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metallic), adjust the varible capacitor
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until picture tunes in. Sit back,
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relax, and enjoy!!!
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Have fun...
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(Tom) Hackerman
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O S U N Y B B S
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(914) 725 - 4060
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_ _
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| (_><_) And if you enjoyed this Text-file, Call:
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\________[]_____ The Works "914's Text-file BBS" at (914)/238-8195
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_\ 300/1200 N,8,1 1200 baud only from 6:00pm to 12:00mid
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____________ \>\ 10 Megabytes on-line Anti-RBBS and Networks
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/ > \ SysOps: Jason Scott & Terror Ferret
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| ======= (900) Text-files on-line!
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