* Crossposted in SCANRADIO
* Crossposted in SHORTWAVE
* Crossposted in RADIO_HOBBY-ALL
 WANTED: ALPHA TESTERS TO UPGRADE THE CPU IN THEIR
   PRO-2004 SCANNERS WITH ONE FROM A PRO-2006!
 =================================================
Only the serious and fairly technically competent should apply; this is NOT a 
casual armchair modification (yet), and there will be some expense involved.
I think it may be possible to swap "engines" in the PRO-2004 to bring it up 
to PRO-2006 caliber; that is, I think the PRO-2006 CPU can be made to work in 
the slower PRO-2004.  If so, this will yield a trouble-free 30-ch/sec scan 
and search speed.
For some early PRO-2004's, it will also yield the full expanded cellular 
bands: 868.950-894.000 MHz and 823.950-849.000 MHz with default 30kHz 
acing.
(Early PRO-2004's with the GRE-0327 CPU were firmware'd for 870-890 MHz and 
825-845 MHz with 30 kHz spacing, and 12.5 kHz for adjacent bands.  Later 
PRO-2004's with the GRE-0327A CPU had the modern 30 kHz defaults.)
If you are technically competent and would enjoy a little guided Research and 
Development, and will foot your own costs, estimated to be $60-$100, then 
contact me by e-mail for more details.  No, I am not selling anything - you 
will be required to obtained parts and materials on your own, according to my 
specifications and directions.  I will provide instructional and guidance 
materials.
To be qualified for this R&D project, you should possess the following 
minimum qualifications:
1.  Own a PRO-2004 in good operating condition
2.  Own or be willing to acquire a service manual
    for the PRO-2004.
3.  Be willing to modify its Logic/CPU board, PC-3
4.  Have some experience at PCB work, including
    IC installation and removal.
5.  Have some experience with CMOS and SMT devices
6.  Purchase a PRO-2006 CPU from Tandy National
    Parts (800) 442-2425. Est cost: $50-$60
7.  Purchase a pair of 64-pin DIP sockets with
    0.07" pin spacing.  Est cost: $15
8.  Own or acquire basic handtools, and basic
    desoldering equipment.
9.  Be willing to respect and abide by copyrights
    and Non-Disclosure Agreements without fail.
10. Be willing and capable of providing regular
    and detailed reports of your work and results
    by Internet e-mail.
11. Have an Internet e-mail account available for
    daily and regular use, both to send and receive
    e-mail.
If interested, contact me by e-mail ASAP.
+----------------------------------------------------------------------+
| Bill Cheek                E-mail: bcheek@cts.com  FidoNet: 1:202/731 |
| COMMtronics Engineering   Compuserve:  74107,1176                    |
| World Scanner Report      Voice Phone: (619) 578-9247 1:30pm-5:30pm  |
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|                    ftp://ftp.cts.com/users/crash/b/bcheek            |
+----------------------------------------------------------------------+ 
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