Xref: utzoo rec.ham-radio:4526 sci.electronics:2761
Path: utzoo!mnetor!uunet!husc6!mailrus!nrl-cmf!ames!killer!csccat!jack
From: jack@csccat.UUCP (Jack Hudler)
Newsgroups: rec.ham-radio,sci.electronics
Subject: Re: PRO-2004
Message-ID: <404@csccat.UUCP>
Date: 11 Apr 88 17:12:11 GMT
References: <1156@raybed2.UUCP> <2168@frog.UUCP>
Reply-To: jack@csccat.UUCP (Jack Hudler)
Distribution: na
Organization: Computer Support Corporation. Dallas,Texas
Lines: 52
Keywords: MORE MODS !!

Here is a re-post of the article posted last year.

-Jack



From: mgrant@MIMSY.UMD.EDU (Michael Grant)
Newsgroups: mod.telecom
Subject: Restoring Cellulsr Coverage on the Radio Shack PRO-2004 Scanner
Message-ID: <8703162343.AA08357@mimsy.umd.edu>
Date: 16 Mar 87 23:43:38 GMT
Distribution: world
Organization: The ARPA Internet
Lines: 32
Approved: telecom@xx.lcs.mit.edu

In the March 1987 (Vol 6, Number 3) issue of Monitoring Times on page 48,
there is a short article on how to modify your RadioShack Scanner to 
pick up the cellular frequencies.  (This just had to have been leaked
from someone in Tandy sales!)

1. Remove the four cabinet screws and the cabinet

2. Turn the receiver upside down and locate circuit board PC-3

3. Remove seven screws holding board and plug CN-501

4. Carefully lift up the board and locate diode soldered in place below the
   module
   {In the large article, it mentions "a matrix of diodes attached to the
   microprocessor's input port, which is often used to configure radios
   for sale in different markets.  From recent flux on the circuit board,
   it appears that a diode had been added/removed", this is the diode in
   question.}

5. Snip one lead of the diode carefully, leaving it suspended by the other
   lead for later reattachment if desired, such as warranty repair

6. Reverse first four steps above for reassembly.  Radio will now cover
   825-845 and 870-890 MHz and search in 30 KHz increments for no-gap
   760-1300 MHz reception

(Thanks to Jim Marquand and other readers of Monitoring Times)

I do not own a PRO-2004, nor have I ever seen this tried, do it at your
own risk.

-Mike


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