Article View: sci.electronics
Article #7367TV Descrambler
From: Cliff Helsel
Date: Thu, 20 Sep 1990 18:42
Date: Thu, 20 Sep 1990 18:42
50 lines
2356 bytes
2356 bytes
I found the following instructions in a text file on a bulletin board and wonder whether this will do what is claimed. Materials Required: Radio Shack mini-box #270-235 1/4 watt resistor, 2.2k-2.4k ohm #271-1325 75pf-100pf variable capacitor hard to find? 2 - F61a chassis type coaxial connectors RS #278-212 12" - No. 12 solid copper wire 12" - RG59 coaxial cable 1. Bare a length of No. 12 guage 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 variable 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 the coil in box, the coil must be insulated from grounding. This can be done by crazy-gluing a piece of rubber to the bottom of the box, and securing the coil to it. 3. Tap (sp?) 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 grouond other end of resisotr to chassis box, using solder lug and small screw. 5. Drill a 1/2" diamater hold in min-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 converter box and connect to television set with the short piece of RG59 coaxial cable. Set television to HBO channel. 7. Using a plastic screwdriver (non-metallic) adjust the variable capacitor until picture tunes in. Sit back, relax, and enjoy!!! ------------------------------------ If it will do what is claimed would anyone be willing to answer some questions about the construction of this device. Cliff Helsel hcliff@wybbs.mi.org or hcliff@wybbs.UUCP
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Path: arc1-ca.pugleaf.net!utzoo!attcan!uunet!mailrus!sharkey!wyn386!wybbs!hcliff From: hcliff@wybbs.mi.org (Cliff Helsel) Newsgroups: sci.electronics,rec.video Subject: TV Descrambler Message-ID: <477@wybbs.mi.org> Date: 20 Sep 90 18:42:47 GMT Organization: Consultants Connection, Jenison MI Lines: 50