
SCANNER MODIFICATION HANDBOOKS
Vols 1 & 2

                       THE SCANNER BOOKS
                          OF THE 90'S !

                 SIGNED BY THE AUTHOR (Bill Cheek)

The Scanner Modification Handbooks are available from the author with
his autograph for $18.95 + $5 shipping & handling.  (Canada, $9.00 S&H;
other foreign, $11.00 S&H.  Add sufficient extra funds for air mail if
desired.)  See ORDER.TXT for ordering information.


Volume 1 of the Scanner Modification Handbook proved that the average
hobbyist could easily perform some relative simple changes in the equipment
and emerge from the experience with a greatly enhanced scanner.  The
step-by step instructions and photos left no questions unanswered and even
totally non-technical people found that they could restore functions that
had been locked out at the factory, or add anywhere from 100 to 6,000 more
memory channels to popular scanners such as the Radio Shack Realistic
PRO-2004, PRO-2005, PRO-2006, PRO-34 and others.

In Volume 2, modification master Bill Cheek brings you more great
enhancements for the PRO-2004, PRO-2005, PRO-2006, PRO-34, PRO-2022 and
Uniden Bearcats BC-100XLT, BC-200/205XLT, and BC-760/950XLT.  He shows how
to adapt many of these modifications to other scanners as well.  In Volume
2, you'll get new circuits and simpler but more effective approaches to
adding signal strength meters, adjusting the scan delay time (0-12 sec),
speeding up scan & search rates, decoding and using CTCSS tones, adding
more memory channels, adding an event counter, shielding plastic cased
equipment, reducing interference, restoring locked out bands, adding center
tuning meters, and more. Vol-2 also contains updates to the modifications
that appeared in Vol-1, plus more tips, hints, explanations, and tricks of
the trade to make scanners more useful and versatile.

Learn how to realign your PRO-2004/5/6 scanner; how to use a VCR to record
the action from your scanner; how to diagnose and repair some scanner
problems; how to use Computer BBS's to improve your scanning knowledge.
Find out about buying a used scanner; about collecting scanners; how to get
a big boost in the audio output of your scanner; how to build a bench power
supply and lots more.  It's all there in Volume 2 of the Scanner
Modification Handbook,  You'll even learn about dealing with those new
trunked 800 MHz systems that seem so difficult to monitor.

There are plenty of photos and the text is written so that the average
hobbyist can follow the clear step-by-step instructions.  And, you don't
need exotic test equipment or extra special tools to do these
modifications.  Scanner owners will find Vol-2 to be a valuable and
constantly useful reference in many ways.  A few modifications suggest that
the user be familiar with the information in Vol-1 first.

I suppose the Tables of Contents are about the best thing we can offer for
your one-stop shopping please.  Here they are:


              SCANNER MODIFICATION HANDBOOK - VOL 1
                        TABLE OF CONTENTS

1.          Scanning & The Law                           10
 Communications Act of 1934                              10
 Electronics Communications Privacy Act of 1986          12
 Modifications to Your Scanner                           13

2.          Scanner Hobby Tips, Hints & Kinks            17
 Antennas                                                17
 Height                                                  18
 Gain & Bandwidth                                        18
 Choosing a Scanner Antenna                              19
 TV Antennas for Scanners                                22
 Installing Antennas                                     23
 Constructing & Modifying Antennas                       23
 Radio Shack Discone Low Band Improvement                23
 Replacement Antennas for Handheld Scanners              25
 An All-Occasion Portable Scanner Antenna                25
 An Emergency or Indoor Antenna (2 Methods)              27
 Coaxial Cable (Feedline)   & Connectors                 29
 Comparison of Coaxial Cables                            29
 dB Loss to % Loss Conversion                            31
 Coaxial Cable Recommendations for Scanner Use           32
 Connectors & Splices                                    32
 Preamplifiers & Converters                              33
 Tips & Hints on Scanner Receivers                       35
 Evaluating & Choosing a Scanner                         35
 Scanner Features & Specifications                       36
 Emergency Power for Your Scanner                        37
 Analysis of PRO-2004 Power Requirements                 37
 Make a DC Power Cable for the PRO-2004/2005             39
 Emergency Power for Other Scanners                      40
 Battery Eliminators for Handheld Scanners               41
 Emergency 12-14 vDC Power for Handheld Scanners         42
 Tips on NiCd Batteries                                  43
 Tips on Alkaline Batteries                              44
 An Alkaline Battery Power Source for Handhelds          44
 Operating Hints & Techniques                            44
 Increasing Your Knowledge                               44
 Frequency Directories                                   45
 Hobby Periodical Literature                             45
 Radio Clubs                                             46
 Building Your Scanner Library                           46
 Organizing Your Monitoring Station                      47
 Scanner Frequency & Channel Management                  48
 Practical Program for 400 Channels                      49
 Master Programming Plan for 400-Channel Scanners        50
 40-Channel Bank Memory Detail                           53
 6,400 Channel Memory Overview                           54
 Scanner Operations                                      55
 Instant Weather Channel Access                          55
    Receiving Out-of-Band Frequencies
    Monitoring Quiet & Seldom Used Frequencies
    Tape Recording With a VOX
    Tape Recording With a Tape Recorder Switch
    Grounding for Safety & Performance

3.          Cellular Mobile Telephone: Explained         61
 CMT's & The ECPA                                        61
 The Cellular Concept                                    62
 Sequence of Events in a Cellular Telephone Call         62
 CMT Frequency Allocations                               63
 CMT Computer Operations                                 63
 Typical Cellular System                                 64
 How Authorized Personnel Might Monitor a CMT System     67
 Wireline Company Cell Transmit Frequencies              68
 Non-Wireline Company Cell Transmit Frequencies          69

4.  Performance Improvement Modifications for Scanners   73
 Introduction, History & Background                      73
 Why The PRO-2004 & PRO-2005 Are so Prominent            74
 General Approach to Modifications                       75
 Adding New Frequency Bands                              76
 Scan & Search Speed Increases                           78
 Adding S-Meters                                         78
 Adding Tape Recorder Functions                          79
 Automatic Tape Recorder Switch                          79
 Improving The Sensitivity of a Scanner                  79
 Other Analog Modifications for Scanners                 80
 Preparation for Scanner Modifications                   81
 Qualifications & Experience                             81
 Where to Obtain Service Manuals                         81
 What the Author Will do if You Run Into Trouble         82
 Soldering Equipment & Skill                             83
 Specific Modifications:
 MOD-1    Restoring Cellular: PRO-2004/2005              85
 MOD-2    Speeding Search/Scan Rates: PRO-2004/2005      88
 MOD-3    Another PRO-2004/2005 Speedup Idea             89
 MOD-4    Improving Squelch Action: PRO-2004/2005        91
 MOD-5    Better TAPE REC Quality: PRO-2004/2005         93
 MOD-6    Auto TAPE REC Switch: PRO-2004/2005, etc.      96
 MOD-7    Improved Visibility Keyboard for PRO-2004     102
 MOD-8    Improved Headphone Audio: PRO-2004/2005, Etc. 103
 MOD-9    Disabling the "Beep" in PRO-2004/2005         104
 MOD-10   Making Any Base Scanner More Transportable    106
 MOD-11   Voltage Surge/Spike Protection: All Scanners  107
 MOD-12   An S-Meter for PRO-2004/2005: Method #1       112
 MOD-13   An S-Meter for PRO-2004/2005: Method #2       114
 MOD-14   Interfacing Scanners With Shortwave Receivers 117
 MOD-15   100 Extra Programming Channels for PRO-2004   123
 MOD-16   6,400 Programmable Channels for PRO-2004/2005
            & Other Scanners, Too                       124
 MOD-17   CMT & Other Channels for PRO-2021 (Maybe!     143
 MOD-18   Restoring Cellular: Realistic PRO-34          145
 MOD-19   3,200 Channels for The Realistic PRO-34       148
 MOD-20   Restoring Cellular: Uniden Bearcat BC-950-XLT 152
 MOD-21   Restoring Cellular: Uniden Bearcat 200/205XLT 152
 MOD-22   Restoring Cellular: Uniden Bearcat BC-76OXLT  153
 MOD-23   Automated Search/Store: PRO-2004/2005         154
 MOD-24   What's in Store for the PRO-2004/2005?        155
          What Else Can They Add to The Unit?
          Wish List for Future Modifications
 MOD-25   If You Can't do the Work Yourself or Can't
          Find the Necessary Parts-- All is not Lost    158



              SCANNER MODIFICATION HANDBOOK - VOL 2
                        TABLE OF CONTENTS

 Chapter 1  - Hints & Tidbits                            9
 HINT-1     Introduction To Modifying Your Scanner       9
 HINT-2     Use a VCR to Record Scanner Action          14
 HINT-3     Break The Weld Bonds on Some PRO-34's       16
 HINT-4     Diagnosing +5V Problems in PRO-2004/5/6     17
 HINT-5     Thoughts on Scanner Preamplifiers           25
 HINT-6     Source of Radio Info: The Computer BBS      26

 Chapter  2 Information                                 29
 INF-1      Official Frequency Allocation Table         29
 INF-2      Historical Scanner List                     33
 INF-3      Buying Used Scanners - The Best Deals       36
 INF-4      Trunked Radio Systems                       42
 INF-5      Alignment Instructions For The PRO-2004/5/6 47

 Chapter  3 Projects                                     61
 PRJ-1      Easy DC Power Supplies For Your Projects     61
 PRJ-2      Boosting Audio Power of Your Handheld        70
 PRJ-3      Super-Snoop DTMF Detector For Scanners       74

Chapter 4 - Review of Volume 1 MODS; New Modifications   79
 MOD 1-24   Review + Update of Volume l's Modifications  79
 MOD-25     High Perf Analog S-Meter For PRO-2004/5/6    99
 MOD-26     LED S-Meter For PRO-2004/5/6 & Others       105
 MOD-27     Center Tuning Indicators For PRO-2004/5/6   123
 MOD-28     Keyboard Memory Block Controller
              For 6,400-ch. PRO-2004/5/6                136
 MOD-29     Adjustable Extended Delay for
              PRO-2004/5/6, PRO-2022, Others            154
 MOD-30     Adding an Event Counter to Your Scanner:
              PRO-2004/5/6, Others                      167
 MOD-31     CTCSS Decoders For PRO-2004/5/6
              & Other Scanners                          170
 MOD-32     Carrier-On Indicator; PRO-2004/5/6
              & Other Scanners                          182
 MOD-33     New Automatic Tape Rec Switch;
              PRO-2004/5/6 & Others                     187
 MOD-34     Shielding For Scanners & Electronic
              Equipment in Plastic Cases                193
 MOD-35     Restoring Cellular Bands in The PRO-2022    196
 MOD-36     Revving Up The Speed of The PRO-2022        197
 MOD-37     3,200 Channels For The PRO-2022             200
 MOD-38     Revving Up The Speed of The PRO-34          203
 MOD-39     Doubling Battery Power in The BC-20OXLT
              & BC-10OXLT                               207
 MOD-40     Another Cellular Restoration Procedure:
              BC-200/205XLT                             209
 MOD-41     Speeding Up Search/Scan Rates in
              The BC-200/205XLT                         201
 MOD-42     Another Cellular Restoration Procedure
              For BC-760/95OXLT                         212
            Conclusion                                  213
            The New Wish List                           214
            If You Run Into Trouble With The Mods       218
            If You Can't Do The Work Yourself,
               Or Can't Find The Parts                  218

======================================================================

MODIFICATION IMPROVEMENT

After the manuscript for Vol-1 was submitted to the Publisher, I developed
an improvement to MODs-16 & 19 for the Extended Memory Board (6,400
channels in the PRO-2004/5/6 and 3,200 channels for the PRO-34, PRO-2021 &
PRO-2022).  Refer to pages 130-131 and change the four 1-k or 4.7-k
resistors, R1-R4, to 68-k to 100-k. This improvement reduces the current
drain from the Memory Retention Battery when the unit has been removed from
AC/DC power.  The original 1-k or 4.7-k resistors draw much more current
than necessary, so mark your copy of Vol 1 for future reference.

================================================================

SCANNER MODIFICATION HANDBOOK, VOLS 1 & 2 MOD NOTES

MODs 12 & 13 are discontinued; replaced by a hot, new MOD-25 (and/or
MOD-26) in Vol 2. MOD-6 is ok, but is replaced by the new MOD-33.  MOD-17
is worthless; forget it.  MODs 16 & 19 have some hot, new options in Vol-2.
Computer interfacing of the PRO-2004/5/6 has been introduced in my new
"WORLD SCANNER REPORT" for the latest on this, new mods, tricks and
more.....see other files herein.

=================================================================

NOTE:  My third scanner hack book, called THE ULTIMATE SCANNER, is
described in a separate file called BKULSCAN.TXT

See ORDER.TXT for detailed ordering information


