We have the (Police Scanner Tips, Modifications, and Antenna Building Manual on CD) If you are a Police Scanner Hobbyist, you will Love this CD. It has a lot of step by step instructions on (Restoration Of Cellular Frequency Coverage Modifications), and a few other types of Mods on police scanners, mostly older scanners, because there are not many Mods out yet for the newer ones, and it has Police frequencies for all 50 States in alphabetical order, This CD also gives step by step instructions on building different types of scanner antennas, for giving your scanner that extra kick to pick up those far off frequencies, and that’s the kind of stuff that makes a hobby a great hobby. These Homebrew Antennas will work on all Scanners, new or old. I included a lot of Tips on this Cd to help any scanner Hobbyist understand the Police Scanner much better, and I also added over 65 owner manuals for different types of police scanners, just in case you have an old Scanner, and just can’t find that old paper back manual. It took me a while to put all of this Information together, and convert it into PDF Format. I truly hope you enjoy the fun you’re going to have with this Great CD. But if you are not satisfied with it, I can Guarantee you a complete Refund, no questions asked.