From: sysrick@orion.spd.louisville.edu (Rick McTeague)
Subject: Re: Additional modifications for PRO-2006 ?
Date: Tue, 1 Sep 1992 13:54:02 GMT
Organization: University of Louisville

In <1992Sep1.070826.4305@dde.dk> phn@dde.dk (Per H. Nielsen) writes:

>VasRat@cup.portal.com (John F Braun) writes:

>>If you are into scanner modifications, then you'll probably enjoy the Scanner
>>Modification Handbook and Scanner Modification Handbook, Volume 2.  They focus
>>on mods for the RS PRO-200X series.  For more info, contact:

>>CRB Research Books, Inc.
>>P.O. Box 56
>>Commack, NY  11725

>Does anybody have a list of modifications offered by these publications
>or did anybody do a review of them sometime.


A while back, I posted a question to the net asking for info on the contents of
the "Scanner Mod Handbook". Thanks to Steve Kuo, N8OPH, sdkuo@oakland.edu, I
now have the answer; here it is:



There are two books, the Scanner Mod Handbook, and the Scanner Mod
Handbook 2.

The Scanner Mod Handbook (1) covers:
- Scanning and the law
- Antenna
- Coax Cable
- Preamps
- Misc. Tips and Hints
- Cellular Mobile Telephone explained in detail (good stuff, how to monitor)
- Modifications including:
    Cellular restoration
    Speeding up your scanner
    Improved squelch
    Improved tape audio output
    Auto tape recorder switch
    Improved headphone audio
    Disabling the beep
    Voltage surge/spike protection
    Adding an S-meter
    6400 channels for the PRO2004/5/6
    Various mods for the PRO2021, PRO34, Bearcat scanners

The Scanner Mod Handbook 2 covers:
- More Hints and Stuff (no big deal)
- Frequency allocation table
- How to buy a used scanner
- Do-it-yourself alignment for PRO2004/5/6
- Power supplies
- Audio amplifiers
- More modifications including an update to those in the first book and
  also these:
    Better S-Meter (analog and digital versions)
    Center tuning indicator (analog and digital versions)
    Extended delay
    Event counter
    CTCSS decoder (actually shows you how to interface one)
    Carrier on indicator
    New auto tape recorder switch
    Various mods for PRO2022, PRO34, Bearcat scanners

I would suggest the second book as all the mods are improved and updated.
If the second book isn't enough, then buy the first book.  90% of the mods
are for the PRO2004/5/6 series.  I myself have a PRO2004 and PRO2006.
I have performed various mods including the 6400 channel mod with success.

I asked:

/What mods do they have for the PRO34 radios? I'm specifically interested in
/a mod for more channels, similar to the one for the PRO200x radios.

The only mods that are for the PRO-34 is the cellular mod, speedup mod,
and the 3200 channels mod.  Adding more channels consists of replacing
the origional memory chip with a larger one (16 times the size).  By using
the extra memory address lines, you can address 16 "sets" of 200 channels.
Thus getting 3200 channels.  Doing this mod is kind of difficult and will
require you to add the memory board external to the scanner.  I should say
difficult, but it isn't easy.  I've done the equivalent 6400 channel mod
for my PRO2004 with out any problems.  I now have 4 toggle switches on the
back of my scanner than select which of 16 "sets" of 400 channels I want
to use.


Thanks again, Steve!

-- 

Rick McTeague
Electrical Engineering Department, Speed Scientific School
University of Louisville, Louisville, KY 40292
(502) 588-7020

Internet: sysrick@starbase.spd.louisville.edu

Disclaimer: I'm a stand-up comedian; if anyone takes me seriously, I'm
            doing something wrong!