carrying the great torch of anarhcy, úúúúú Ú¿  ڿ Ú¿ Ú Ú Ú Ú Ú¿ Ú¿ ÚÚ ÚÚ Ú Ú¿ úúúúú úúú úúú ³³³ ³ ³³ ³³ ³ à À¿À¿ ³³³ ô À´ ô à ³³³ úúú úúú úú A úú À À Á ÀÀ ÀÙ À À Ù Ù À À ÀÀ ÄÙ ÀÀ À À À úú A úú úúú úúú present‚ úúú úúú úúúúú úúúúú file number 19 in our series "Make Your Own CATV Filters" by The Beastmaster released on the fifth day of July, in the year of 1992 'DA' DISCLAIMER: We take no blame or hold no responsibility for any acts carried out whether suggested, implied, or inspired by this text. This should be used for informational purposes only. We ask that this file be uploaded around in its original unedited form ONLY. Read the whole damn file before doing ANYTHING! Well you may remember back to Mindless Mayhem release number 10, when I discussed building a cable tv filter which would work exclusively with a cable ready television. For those of you who are unfamiliar with your cable tv system and it's methods of screwing you (hahehe), a jammed signal is send to your set, and the picture looks like a white screen with thin black lines evenly placed across the screen that flashes in sync with an annoying beep sound. If you unsure (or stupid) about what it is, call your cable tv company and ask them, or see if you neighbors have a small cylinder screwed into their tv or convertor for each premium channel they subscribe. Background on filters: Filters are usually used only in large metropolitan systems where the cable company has several thousands of subscribers. Because addressable convertors cost so much, (even in great quantity) the larger the subscriber pool, the more likely they use filters to 'descramble', since they cost very little in huge quantity compared to the addressable convertors. In case you haven't already figured out, they are cheep! For more info on cable company systems, refer back to Mindless Mayhem 4, which has what is now dated material (was current then, ain't now; well some of it's still good.) "So why release another file on filters, Beasty?" Well this one is quite different (plus my files are so enjoying). It includes a PC Board pattern for the filter, shematics for THREE (wow folks, this is gettin good) filters: one for cable convertors that output channel 2, on for convertors which output 3 to 6, and one for cable ready tv's (filtered channels ALWAYS fall between 14 and 22 on your cable system), plus a schematic for each, and (the grand finale) a parts placement diagram for each one. "Wow Beasty, you outdid yourself this time!" Yeah, all for the good of the public and to damn the cable companies (mainly mine, TCI Chicago Cable!) Well, lemme break down this archive for, as to what each file is. CA1.PCX A scan of the PC Board pattern CA2.PCX Schematic for the channel 2 filter CA3.PCX Parts placement diagram for the channel 2 filter CA4.PCX Schematic for the channels 3-6 filter CA5.PCX Parts placement diagram for the channels 3-6 filter CA6.PCX Schematic for the channels 14-22 filter CA7.PCX Parts placement diagram for the channels 14-22 filter MM19.TXT You're readin it right now, dupe! CA1.PCX is the PC Board artwork, and can be used for ALL three of the filters (one picture does it all, and for Dominoe's Pizza, one CALL does it all, yuk yuk yuk.) First off, obtain some TEC-200 film from an electronics supply store (Gateway in St. Louis comes to mind, call 314-555-1212 to get their number, you lazy ass. They do mail order, will send you most of the components in this file, minumum order is $10.00, and they have no catalog, just call em with a credit card #, and tell em what you need.) What you need to do is to print out CA1.PCX to 'scale' (which should be about 3 3/8" long by 7/8" high). If you have a shitty printer, you may touch up the printout with a black marker. You can then follow the instructions on the TEC-200 film and transfer the printout artwork to the TEC-200 film. The TEC-200 film is then transfered to a copper clad PC Board (Gateway has this too, you don't need a huge sized one. Get the smallest one they have with copper on one side.) Once the image is on the PC Board, then get some etching fluid (Radio Shack even sells it) and follow etching instructions on bottle to etch the PCB. Once etched, you then take a piece of #000 or 0000 steel wool and scrubl the black shit off the PC Board. Now drill out all the holes on the board with a small manual drill (Gateway should also have the small tiny bits you need, otherwise Radio Shack used to sell a small hobby size drill for like $3.50 with two bits.) Once drilled and etched you're ready to put the parts in there. For the channel 2 filter you need: C1, C5 2.2pf to 3.3pf cap (ceramic disc is fine) C2, C6 39pf ceramic disc capacitor C3, C4 82pf ceramic disc capacitor L2, L3 2-1/2 turn tunable coil (These are hard to find, all the coils that is! Gateway should have em though.) L1, L4 4-1/2 turn tunable coil J1, J2 PC Mount 'F' connectors, one male, one female Take those parts and place them on the PC board in the correct places, as noted on the parts placement PCX (CA3.PCX). Might be helpful to print this one out, in draft at least. Keep all leads VERY SHORT!! The tunable coils are what is used to adjust your picture. They have hex type thingys inside them, and can only be turned with a plastic tool! Do not use metal! You'll crack them, and cause interference in the adjustment. Gateway should also have the tuning tools, you'll need a different one for each type of coil. Patience is a virtue, it will take a while to adjust the thing perfectly since you have four coils to do. These instructions will apply to the other filters also, just simply pretend they appear after the following parts listings, and be sure to look at the proper CA# file which corresponds to the filter you need to build. I don't like extra typing. For the channels 3-6 filter: C1, C8 2.2pf to 3.3pf capacitor (see above note in ch. 2) C4, C5 56pf ceramic disc capacitor L2, L3 2-1/2 turn tunable coil L1, L4 4-1/2 turn tunable coil J1, J2 PC Mount 'F' connectors If using on channel 3 or 4, C2, C7 22pf ceramic disc cap C3, C6 12pf ceramic disc cap OR if using on channel 5 or 6, C2, C7 15pf ceramic disc cap C3, C6 are empty in this one For the channels 14-22 filter: C1, C4 2.2pf ceramic disk cap L1, L4 2-1/2 turn tunable coil L2 4-1/2 turn tunable coil L3 2-1/4 turns of wire, 5/32" dia (take a 5/32" drill bit, wrap 2-1/4 turns of wire round it) J1, J2 PC Mount 'F' connectors Is using on channels 14 thru 18, C2, C5 18pf ceramic disc capacitor C3 5pf ceramic disc capacitor OR if using on channels 19 thru 22, C2, C5 10pf ceramic disc capacitor C3 2.2pf ceramic disc capacitor Done! Enjoy your cable.. Writers notes: Well I have successfully built and am using all of the above on different sets in my house. Write me at Destiny Knights BBS (listed below) or any board you see me on if you have comments or questions. I can also be reached currently on Internet at marc@infopls.chi.il.us, but that account will be up soon, hehe. Ever seen that SANRED.TXT file on the red box convertor? Recently built one, and it does work very well on the Illinois Bell phones round here (Chicago). It's definatly worth the investment. In closing: home board to Mindless Mayhem is DESTINY KNIGHTS 7O8 3O7 3768 Leaders: Great One among others much less significant such as The Beastmaster Holdings: Meager 24OO baud modem, 200 megs of hard drive capacity, several hundred text files, plus ALL GREAT Mindless Mayhem releases