****************************************************************************** SCANNER MODIFICATIONS FOR FUN AND PROFIT by HOTROD ****************************************************************************** Volume 1, cellular phone restorations. For Profit, you ask? Of course! There are 2 ways. 1) blackmail, if you've got the balls, and 2) modify your friends scanner for a nominal charge, since he is too lazy to download this wonderful file. For Fun, you ask? To quote Ray Charles, "UH HUH!". There are wierdos that use cell phones. There are Drug Dealers. There are wives cheating on husbands and husbands cheating on wives. There are bookies and bookers. The wierdest thing I heard was a gay guy calling gay phone sex repeatedly. Funny did not describe this idiot. Now on to the Show! The following scanners can be modified to recieve cellular phones. Pro-2004 Pro-2005 Pro-2006 Pro-2021(possibly) Pro-34 BC950XLT BC760XLT Regency R-1600 BC200XLT BC205XLT Pro-2022 From the top down... THE Realistic Pro-2004 There are 2 mods for this baby, one for early models, one for the late models Ah, shit, you say. Calm down. Don't worry...nice 'n' easy.... 1) Disconnect power from scanner. (I can do that, you think to yourself) 2) Take off the outer metal case. 3) Turn the radio upside down and find the Metal CPU compartment. Calm down. It's marked PC-3 on the circuit board. Found it? Good. Pry off the cover. 4) See the pretty chip, the big one with 64 pins? Yup. Good. Now look to the Left 'bout 2 inches and find the column of resistors and diodes. See where it says D-512. Right under it is D-513. 'D-513' may not be printed on the circuit board, and even if it is, there is no guarentee that D-513 even exists. If it does exist (remember The word D-513 may not be there, but if there is a diode right under D-512, then that is the one) then you have it easy. If it is not there you have a little more work to do. 5) Ah, so you found D-513. Cut one of his legs and spread the cut ends apart so they can't touch. Now put Mr. Radio back together and enjoy. Now feel proud of yourself. Good job! 6) God Damn! No D-513 here! Calm down I say! Find 9-pin cable connector CN-501 from the sub chassis. Carefully remove him. He is toward the rear side of PC-3. 7) Remove the 7 screws that hold down PC-3. Lift up and tilt the PC-3 subchassis so you can see the bottom of the circuit board. See Mr. Diode? Clip his leg and put Mr. Scanner back together. You can now gloat, you had to do it the hard way! The Pro-2005/Pro-2006 1) Disconnect the scanner from power source. 2) Take off the top plastic cover (there are two screws on the rear you'll need to remove.). Locate the Logic & Display board (fancy name, don't panic) right behind the display and keyboard (right up front). Right behind the '3' and '6' keys there are spaces for four components, but only two, both are diodes, are actually there. The top one is D-503. The bottom one is D-502. Clip one leg (or take out altogether) D-502. 3) Whoopee...Cellular--Yeah!! 4) Put Mr. Scanner back together. If this mod took you more than 5 minutes, you are an official nincompoop. Add your name to the Nincompoop list at the bottom of the file. The Pro-2021, maybe, maybe not. What do I mean 'Maybe'? Well, we can get the 800's to be able to be accepted by the scanner, but whether or not the scanner will be able to monitor anything in this band is a mystery. Some people swear that it works, some swear that it don't. There may be two versions. 1) Disconnect scanner from the power source. Remove the cover and find the CPU area. Locate and clip one leg of D-44. Put the scanner back together. Search between a few frequencies in the 800's. If you hear stuff, great. If not, who cares. No harm done. The Pro-34 Now panic. This won't be easy. How bad do you want that band? Real Bad? OK, Lets do it. Get this crap: Soldering Iron Desoldering Tools Small wire cutters Small Adjustable wrench Small phillips screwdriver Something to pry with Note: The radio may lose frequencies programmed into memory due to time required for this mod. 1) Remove Antenna, Battery Pack, Volume & Squelch knobs (may require pliers) 2) Remove the 4 *SMALL* phillips screws from the rear cover. 3) Starting at the Battery pack end of the scanner, pry the back cover loose. Don't pry at the top! There is a "hinge" there which can be worked loose. Work off the rear cover over the volume and squelch shafts. Put the rear cover aside. 4) Remove the 4 brass hex screws from the printed cicuit board. 5) Desolder the 2 bare wires coming from the volume control *AT THE CIRCUIT BOARD!* Push the wires up out of the way. 6) Desolder the 2 Wires coming from the antenna connector *AT THE CIRCUIT BOARD!* Push the wires up out of the way. 7) Loosen and remove the 2 hex nuts and washers from the shafts of the volume and squelch controls. 8) Carefully but firmly pry up the exposed circuit board with a flat object. Pry near the top of the board on either side. It will feel like it is not going to come off because there is a connector holding it in place from beneath. Continue working the board straight up. Once you get it up a bit, look under the board and find the connector. Once the board is free of this connector, work the board so that the Volume and Squelch controls slip out of thier mounting holes as the board is lifted away. Remove the small connector with the red and white wires connecting the free circuit board with the inner one. The entire upper board should now be free. Place it aside. 9) See the metal shield? Remove the 3 tiny phillips screws holding it in place. Lift the shield cover out of the way. It will not come completely free because of some wiring. Just move it out of the way. 10) Find D11 over on the left side of the cpu board. They are just to the left of IC-2 11) Chop one leg of tiny Mr. D11. 12) *Carefully* put the scanner back together. CAREFULLY! 13) Give yourself a huge pat on the back. Gloat. You deserve it. This was no easy mod. The BC950XLT and The BC760XLT and The Regency R-1600 Try this first: 1) Disconnect the scanner from AC power. Remove 4 screws and the covers. Turn the unit over to expose the solder side of the main board. 2) Find the 24 pin surface mounted chip near the front end of the scanner. It will either be a SANYO LC3517BM-15 or FUJITSU (F) MB-8416-20L. These chips are reference points only. They will not be modified. 3) Note the 2 rows of 32 pins each from the larger UC-1246 on either side of the sanyo or fujitsu chip. You'll need to flip the scanner over to see the chip itself, but we will be working only on the solder side. 4) Cut the two traces leading to Pin 26 of the UC-1246 chip. There is one trace on either side of Pin 26. Cut them both to totally isolate Pin 26. The thicker trace is the circit board ground and the ver thin trace takes ground over to pin 19. 5) Solder one end of a 10K resistor to pin 26 of UC-1246. Solder the other end to Pin 32 of the UC-1246 chip. Watch out for shorts and solder blobs. 6) Solder bridge one end of a 1/2" insulated wire across the two VACANT solder pads next to pins 19 and 20 of the UC-1246. This shorts pins 19 and 20 together. Solder the OTHER end of the 1/2" wire back to the part of the circuit that was cut away from pin 26, not the thin trace, but the thicker one. Watch out for shorts, solder blobs and errors. Recheck your work. 7) Put the scanner back together. Turn it on. Press MANUAL : 880.0 : E : and if 880.000 appears in the window, your done. If not, check your work again paying special attention to solder blobs, possible shorts, etc. 8) If it still does not work, try method 2 below. BC950XLT/BC760XLT/R-1600 Method 2. Only if method one above did not work. 1) Disconnect scanner from power. Remove 4 screws holding on the bottom cover. Carefully remove the bottom cover, protecting the speaker wires. Find microprocessor chip (64 pin IC at front of board) 2) Find the indented dot that marks pin 1. Count along that row to pin 20 and cut it loose AT THE BOARD , NOT AT THE CHIP! 3) Bend up Pin 20 a little. 4) Test your scanner per step 7 in method 1. 5) If it still does not recieve cellular, then solder a bridge between the clipped Pin 20 and Pin 19. 6) Viola! Cellular! The BC200XLT and The BC205XLT Method 1. Try this first. 1) Take off the battery pack. 2) Remove the 2 screws on the back of the scanner and the 2 screws holding the battery retaining spring (at the bottom of scanner) in place. 3) Carefully pry the bottom of the rear cover from the scanner and remove the cover. 4) Locate the two small screws at the base of the circuit board and remove them. Gently pull the front panel from the main frame at the base and seperate them. It will feel tight, like it doesnt want to come off. Be firm 5) Find the leadless 10K resistor above the 'DEN' of UNIDEN on the UC-1147 chip. The chip may say UC-1147A, don't worry about it. This 10K resistor may not look like a 10K resistor. It may be a 'chip resistor', a very small, black component, or it may look like a regular resistor with black/brown/orange stripes. 6) Solder one end of a small (1/4 watt or less) 10K resistor to the left side of the 10K resistor youy just located. 7) Solder the other end of your 10K resistor to pin 8 of the nearby K-1013 chip. Watch out for the small screw in the vicinity and DON'T GROUND THE RESISTOR AGAINST IT! 8) Reassemble, paying special attention to the alignment of the dual in-line connector at the bottom of the board. Test by inputting 880.0 : E , and within 2 seconds 880.000 should appear on the display. If not, check your work. If there is nothing wrong with your work and still no cellular, proceed to method 2. BC200XLT/BC205XLT Method 2. Only if method 1 does not work. 1) Remember that 10K resistor you found in step 5 of method 1, above? Yeah? Well chop it in half. Really. Reassemble. Enjoy. The Pro-2022 1) This is gonna be E-Z. No more than 3 minutes. 2) Unplug scanner from power. Turn scanner upside down and remove the top plastic case of Mr. 2022. Look for the Diode Matrix containing several silicon switching diodes, D-42 to D-45. This matrix is roughly in the center front area of the main board. Find D-44 and clip an exposed lead. Bend it away. 3) Put Mr. 2002 back together. Listen to some of the strange people that own cell phones. ****************************************************************************** I hope you enjoyed my first textfile. It should be noted that I will not be responsible in any way shape or form for any damages to you, your scanner, or anything else. In performing any of the modifications described above, you automattically accept the above terms. I did not make you perform the mods. These mods will void your warrenty, so if you need service later, don't blame me, O.K. ****************************************************************************** Special thanks to Vince and Sid, who encouraged me to write this file. Look for Volume 2, Other Mods, coming soon! (c) 1993 by me