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-=-=-=-=-=-=-
see files bc200xlt.1 -.5 for mod info on
cellular restoration
800 mhz mod
test mode
BC200XLT.1
UNIDEN/BEARCAT 200/205XLT TEST MODE
by Bob Parnass, AJ9S
According to the Uniden/Bearcat 200/205XLT Service Information Manual, the
following procedure will load channels 1-25 with various test frequencies, and
zero the remaining 175 channels:
1. Press and hold three keys: 2, 9, and MAN simul-taneously and turn
the power switch on.
2. Set the power switch to the off position.
3. Repress and again hold three keys: 2, 9, and SCAN simultaneously and
turn the power switch on.
BC200/205XLT CELLULAR RESTORATION
Note: It is unlawful to monitor cellular telephone conversations. It is
possible to monitor signals from the deleted ranges even without conversion.
Simply add 21.7 MHz to the deleted frequency and enter the higher (image)
frequency. Reception is virtually identical in strength to that which would be
heard on the deleted frequency.
The frequencies deleted at the factory may be restored, but the
procedure must not be attempted by anyone unfamiliar with electronic
circuitry. Grove Enterprises assumes no liability for damage caused by
this procedure. (I won't eighter! WA2ISE). The modification will void
your warranty.
continued in file bc200xlt.4
BC200XLT.2
REASSEMBLY
7. Insert the top of the front panel into the slot under the
volume/squelch control panel and, noting carefully the alignment of
the dual inline connector at the bottom of the board with the
mating socket, press the front panel firmly into place. Be sure
that the holes at the bottom of the circuit board line up with the
holes in the plastic standoffs below them. Insert the two screws
and gently tighten them.
8. Replace the back cover by inserting the top of the cover into the
slot under the volume/squelch control panel; press the cover into
place, insert and tighten the screws.
9. Reposition the battery retaining spring (slotted side toward
notched hole), insert the two remaining screws and gently but
securely tighten them.
CONTINUED IN FILE BC200XLT.5
BC200XLT.3
BEARCAT BC200/205XLT SCANNER MODIFICATION
RESTORING THE DELETED 800MHZ BAND OF YOUR BC200/205XLT CAN BE
ACCOMPLISHED EASILY BY LOCATING THE MICROPROCESSOR LABELED,"UNIDEN UC-
1147". ONCE YOU'VE IDENTIFIED THAT IC,LOCATE THE 10K OHM RESISTOR
(BROWN-BLACK-ORANGE) POSITIONED ABOVE THE LETTERS "DEN" ON THE IC. THE
RESISTOR IS LEADLESS,SO TO ACCOMPLISH THE MOD,SIMPLY CUT THE BODY OF
THE RESISTOR IN HALF. USE MINIATURE WIRE CUTTERS.
DO NOT DISTURB ANYTHING NEAR IT. IF THE LEFT SOLDER PAD COMES LOOSE,IT
MAY BE PEELED FROM THE BOARD. BRUSH OR BLOW AWAY ANY RESIDUE.
NOTE*** IT IS UNLAWFUL TO MONITOR CELLULAR TELEPHONE CONVERSATIONS
73 DENNIS WB2WPO @ KE2KQ HUNTINGTON NY (ZIP 11743bc200xlt.4
TOOLS REQUIRED: Small Phillips screwdriver, small wire cutters.
1. Slide off the battery pack and remove the antenna from the scanner.
2. Using a small Phillips screwdriver, remove the two screws from the
back of the scanner, the two screws which hold the battery
retaining spring at the base and the spring itself.
3. Carefully pry the bottom of the rear cover from the radio and
remove the cover.
4. Locate the two small screws at the base of the circuit board and
remove them. Gently pull the front panel from the mainframe at the
base and separate them.
5. Locate the (64 pin quad flatpack) microprocessor IC labelled
"UNIDEN UC-1147" and the 10k ohm (brown-black-orange) leadless
resistor positioned above the letters "DEN" on the IC.
6. Using miniature wire cutters, cut the resistor body in two without
disturbing anything else near it. If the left solder pad comes
loose, it may be peeled from the board. Brush or blow away any
residue. This completes the restoration.
continued in file bc200xlt.2 BC200XLT.5
10. Slide the battery pack into place; switch the scanner on to make
sure the display comes on. If not, the battery is discharged or
the dual-inline connector was misaligned during assembly
(see step 7).
Assuming the display comes on, press: MANUAL, 845.0, E; within two
seconds, the frequency 845.000 should appear on the display.
Cut this resistor
V
[*10k*] [ ]
I I I I I I I I I I I I I I I I I I
= =
= =
= =
= =
= U N I D E N =
= =
= =
= =
= =
U C - 1 1 4 7 =
= =
= =
= =
I I I I I I I I I I I I I I I I I I
.......................................
Pete Simpson, KA1AXY
.......................................
CONTINUED IN FILE BC200XLT.3
BC200XLT.6
ALL USERS OF THE BEARCAT 200-XLT HANDHELD SCANNER HAVE PROBABLY HAD
PROBLEMS CONCERNING SHORT BATTERY PACK LIFE. BATTERY INDICATOR COMES
ON TOO SOON. AFTER TINKERING AROUND WITH THE RIG, A SIMPLE SOLUTION
HAS BEEN FOUND. THIS MOD WILL VOID YOUR WARRANTY AND YOU DO THIS AT
YOUR OWN RISK. [I HAD NO PROBLEMS WHATSOEVER.]
1. SLIDE OFF BATTERY PACK.
2. REMOVE TWO SCREWS ON BACK OF RIG.
3. REMOVE TWO SCREWS ON BOTTOM OF RIG THAT HOLD CLIP IN PLACE.
4. CAREFULLY REMOVE BACK OF SCANNER.
5. REMOVE TWO SCREWS AT BOTTOM OF BOARD NEAR RED CONTACT WIRE. L+R
6. SEPERATE THE TWO BOARDS VERY CAREFULLY. CONNECTED BY 16 PIN DIP SOCKET.
7. BOARD IS PH-069AA OR PH-O69AC. POSITION BOARD WITH DIP SOCKET AT LOWER
RIGHT HAND SIDE.
8. AT LOWER LEFT OF BOARD, NOTICE TWO ELECTROLYTIC CAPS. C-214 C216.
9. D-203 IS LOCATED JUST ABOVE THESE TWO CAPS. IT IS A GLASS TYPE ZENER
DIODE WITH COLORED BANDS FOR MARKINGS.
10. WITH A SMALL, FINE PIECE OF WIRE SOLDER ACROSS DIODE D-203.
11. THAT'S IT!!!!!! NOW THE BATTERY INDICATOR WILL NOT COME ON AND YOU WILL
NOT BE BOTHERED BY TURNING OFF AND ON THE RIG TO RESET THE TIMER. [THUS
ENABLING YOU TO USE THE NICAD PACK TO IT'S FULLEST EXTENT.] DISPLAY
BLANKS OUT AT ABOUT 4.5 VOLTS.
12. RE-ASSEMBLE RIG IN REVERSE ORDER AND YOUR IN BACK IN BUSINESS.
MARK MACHCINSKI
3357-14TH STREET
WYANDOTTE, MI 48192-6120
MARK N8JCF @ WA8OOH
Restore the Cellular Freqs. on Your BC200/205XLT!
This is so simple that anyone can do it, and you have to be
REAL sloppy in order to damage your unit.
There is no soldering involved, but if you do happen to mess your
unit up: YOU AND ONLY YOU ARE THE ONE THAT IS RESPONSIBLE. We take no
responsiblity for any thing that might become of you or your radio!
This mod. will also void your warranty, so open your radio and
check it out to make sure you can pull it off before you begin the real
work.
Now that we are through with the usual backwash of "spooky"
information we can now begin.
1.) Take the antenna and battery pack off of the radio.
2.) With a Phillips-head screwdriver, remove the two screws at the
back of the radio. Then remove the two screws and the battery
spring at the base of the radio.
3.) GENTLELY! pull off the back of the radio.
4.) Locate the two screws at the bottom of the board, and
carefully remove them with a Phillips-head screwdriver.
(Be carefull not to damage any of the surrounding components.
This is not to tough to avoid, but warrants mentioning.)
5.) EVER-SO-GENTLELY! pull the front panel away from the scanner
frame.
6.) On the front panel part of the radio, locate the microprocessor
IC (labeled UNIDEN UC-1147, its the biggest black chip on the
board) and the 10K ohm (brown-black-orange) resistor positioned
right above the letters "DEN" in the word "UNIDEN" on the IC.
***** MAKE SURE YOU LOCATE THE RIGHT PART *****
7.) With a small pair of clippers, clip the resistor right in two.
Make sure not to disturb any components around the resistor.
Leave the ends of the resistor on the board, all you need to
do is just clip it enough so that there is a gap between the two
ends. Take care to clean the remiments, made by cutting the
resistor, of the board.
8.) Check to see that there is no damage and everything is tidy.
9.) CAREFULLY reasemble the radio in exactly the reverse order of
how you took it apart. Be careful to line up the pins to their
sockets in the lower, left-hand side of the radio.
***** FAILURE TO DO THIS CORRECTLY WILL RESULT IN A DISPLAY
ERROR. WHEN THE RADIO IS TURNED ON NOTHING WILL APPEAR ON THE SCREEN.
don't panic.
I've done this before. The malfunction can be fixed by taking
the radio back apart, carefully, and making sure those pins are
in the correct socket. I almost gave birth to a small cow when this
happened to me and I was very relived to find out that this was all
that was wrong.
10.) After you have tightened the screws, put the battery pack and
the antenna back on the radio. Then press "MANUAL, 845.0, E".
Within two seconds the freq 845.000 should pop up on the display.
Now you have completed the mod. for your scanner. I would now like
to welcome you to the world of the forrbiden freqs.! You will now
see the truth to the statement "Never say anything on a cellular
phone that you do not want anyone else to hear." Unfortunately
(but fortunately for us!!) there is an incredible number of people
that do not know this and you will be suprised at the information
broadcast across the airwaves.
Enjoy!
E. Pinnell
Sacramento, CA
BC200XLT.1 Test mode & Cellular restore Pt 1
BC200XLT.2 Cellular restore Pt 3
BC200XLT.3 Another Cellular restore
BC200XLT.4 Cellular restore Pt 2
BC200XLT.5 Cellular restore Pt 4
BC200XLT.6 Extending battery life
BC-200S.txtS
9 TEXTPCXT F ?7?*?7?* ???? BC200/205XLT CELLULAR RESTORATION
Note: It is unlawful to monitor cellular telephone conversations. It is
possible to monitor signals from the deleted ranges even without conversion.
Simply add 21.7 MHz to the deleted frequency and enter the higher (image)
frequency. Reception is virtually identical in strength to that which would be
heard on the deleted frequency.
The frequencies deleted at the factory may be restored, but the procedure must
not be attempted by anyone unfamiliar with electronic circuitry. Grove
Enterprises assumes no liability for damage caused by this procedure. The
modification will void your warranty.
TOOLS REQUIRED: Small Phillips screwdriver, small wire cutters.
1. Slide off the battery pack and remove the antenna from the scanner.
2. Using a small Phillips screwdriver, remove the two screws from the
back of the scanner, the two screws which hold the battery retaining spring at
the base and the spring itself.
3. Carefully pry the bottom of the rear cover from the radio and remove
the cover.
4. Locate the two small screws at the base of the circuit board and
remove them. Gently pull the front panel from the mainframe at the base and
separate them.
5. Locate the (64 pin quad flatpack) microprocessor IC labelled "UNIDEN
UC-1147" and the 10k ohm (brown-black-orange) leadless resistor positioned
above the letters "DEN" on the IC.
6. Using miniature wire cutters, cut the resistor body in two without
disturbing anything else near it. If the left solder pad comes loose, it may be
peeled from the board. Brush or blow away any residue. This completes the
restoration.
REASSEMBLY
7. Insert the top of the front panel into the slot under the
volume/squelch control panel and, noting carefully the alignment of the dual
inline connector at the bottom of the board with the mating socket, press the
front panel firmly into place. Be sure that the holes at the bottom of the
circuit board line up with the holes in the plastic standoffs below them.
Insert the two screws and gently tighten them.
8. Replace the back cover by inserting the top of the cover into the
slot under the volume/squelch control panel; press the cover into place, insert
and tighten the screws.
9. Reposition the battery retaining spring (slotted side toward notched
hole), insert the two remaining screws and gently but securely tighten them.
10. Slide the battery pack into place; switch the scanner on to make
sure the display comes on. If not, the battery is discharged or the dual-inline
connector was misaligned during assembly (see step 7).
Assuming the display comes on, press: MANUAL, 845.0, E; within two seconds, the
frequency 845.000 should appear on the display.
Cut this resistor
|
V
[*10k*] [ ]
I I I I I I I I I I I I I I I I I I I
= =
= =
= =
= =
= U N I D E N =
= =
= =
= =
= =
= U C - 1 1 4 7 =
= =
= =
= =
I I I I I I I I I I I I I I I I I I I
that's it.............et.
--
I wish to thank everyone that made this possible.
This file was downloaded from the
HAM on Rye BBS -- (814) 333-4111 -- 2400-8-N-1
**************** Specializing in *******************
Amateur radio, TVRO, scanning, shortwave and clandestine radio
BEARCAT 200XLT CELLULAR FREQUENCY RESTORATION
AKNOWLEDGEMENTS
---------------
The following was extracted, and partially edited, from literature
received from:
MONITORING TIMES
140 Dog Branch Road
Brasstown, North Carolina 28902
If the reader desires to obtain the original literature, which comes
complete with an illustration of the circuit board and indication of
the resistor to be cut, a check for $2.00 along with a stamped self-
addressed envelope may be mailed to the above address. The turn-
around for my literature was very fast (Less than 1 week after
mailing my check). Although the directions presented here should be
quite adequate, the quick turn-around on the mail order literature
might provide the extra measure of visual security that some desire.
The documentation also includes a review of the BC200/205XLT scanner.
NOTES
-----
It is unlawful to monitor cellular telephone conversations. It is
possible to monitor signals from the deleted ranges even without
conversion. Simply add 21.7 MHZ to the deleted frequency and enter
the higher (image) frequency. Reception is virtually identical in
strength to that which would be heard on the deleted frequency.
The frequencies deleted at the factory may be restored, but the
procedure should not be attempted by anyone unfamiliar with
electronic circuitry. No one anywhere, anytime, in anyway, etc...
assumes any reponsibility for damage caused by this procedure.
THIS MODIFICATION WILL VOID YOUR WARRANTY!
TOOLS
-----
Small Philips Screwdriver
Small Wire Cutters
DISASSEMBLY
-----------
1. Slide off the battery pack and remove your antenna.
2. Remove the two screws from the back of the scanner, the two
screws which hold the battery retaining spring at the base, and
the battery retaining spring itself.
3. Carefully pry the bottom of the rear cover from the radio and
remove the cover.
4. Locate the two small screws at the base of the circuit board and
remove them. Gently pull the front panel from the mainframe at
the base and seperate them.
MODIFICATION
------------
5. On the face of the circuit board that faces the front of the
scanner when installed, locate the microprocessor IC labeled
"UNIDEN UC-1147". Locate the 10K ohm resistor (brown, black,
orange), which is positioned approximately along the longitud
inal centerline of the board, and next to the microprocessor.
The resistor is of the leadless type and should be positioned
directly next to the microprocessor and above the "DEN" on the
IC label.
6. Using the small wire cutters, cut the resistor body in two with
out disturbing anything next to it. If the left solder pad comes
loose, it may be peeled from the board. Brush or blow away any
debris. This completes the restoration.
REASSEMBLY
----------
7. Insert the top of the front panel into the slot under the
volume/squelch control panel and, noting carefully the align
ment of the dual-inline connector at the bottom of the board,
press the front panel firmly into place. Be sure that the
holes at the bottom of the circuit board line up with the
holes in the plastic standoffs below them. Insert the two
screws and gently tighten them.
8. Replace the back cover by inserting the top of the cover into
the slot under the volume/squelch control panel; press the cover
into place, insert and tighten the screws.
9. Reposition the battery retaining spring (slotted side toward
notched hole), insert the two remaining screws and gently but
securely tighten them.
10 Slide the battery pack into place; switch the scanner on to make
sure the display comes on. If not, the battery is discharged or
the dual-inline connector was misaligned during assembly (see
step 7).
CHECK OUT
---------
11. Assuming the display comes on, press: MANUAL, 845.0, E; within
two seconds the frequency 845.000 should appear on the display.
bc200-1.txtS
9 TEXTMSWD # ?7???7?? ???A
DOWNLOADED FROM COMPUSERVE:
BEARCAT 200XLT CELLULAR FREQUENCY RESTORATION
AKNOWLEDGEMENTS
---------------
The following was extracted, and partially edited, from literature
received from:
MONITORING TIMES
140 Dog Branch Road
Brasstown, North Carolina 28902
If the reader desires to obtain the original literature, which comes
complete with an illustration of the circuit board and indication of
the resistor to be cut, a check for $2.00 along with a stamped self-
addressed envelope may be mailed to the above address. The
turn-around for my literature was very fast (Less than 1 week after
mailing my check). Although the directions presented here should be
quite adequate, the quick turn-around on the mail order literature
might provide the extra measure of visual security that some desire.
The documentation also includes a review of the BC200/205XLT scanner.
NOTES
-----
It is unlawful to monitor cellular telephone conversations. It is
possible to monitor signals from the deleted ranges even without
conversion. Simply add 21.7 MHZ to the deleted frequency and enter
the higher (image) frequency. Reception is virtually identical in
strength to that which would be heard on the deleted frequency.
The frequencies deleted at the factory may be restored, but the
procedure should not be attempted by anyone unfamiliar with
electronic circuitry. No one anywhere, anytime, in anyway, etc...
assumes any reponsibility for damage caused by this procedure.
THIS MODIFICATION WILL VOID YOUR WARRANTY!
TOOLS
-----
Small Philips Screwdriver
Small Wire Cutters
DISASSEMBLY
-----------
1. Slide off the battery pack and remove your antenna.
2. Remove the two screws from the back of the scanner, the two screws
which hold the battery retaining spring at the base, and the battery
retaining spring itself.
3. Carefully pry the bottom of the rear cover from the radio and remove the
cover.
4. Locate the two small screws at the base of the circuit board and remove
them. Gently pull the front panel from the mainframe at the base and
seperate them.
MODIFICATION
------------
5. On the face of the circuit board that faces the front of the scanner when
installed, locate the microprocessor IC labeled "UNIDEN UC-1147". Locate
the 10K ohm resistor (brown, black, orange), which is positioned
approximately along the longitudinal centerline of the board, and next to
the microprocessor. The resistor is of the leadless type and should be
positioned directly next to the microprocessor and above the "DEN" on the
IC label.
6. Using the small wire cutters, cut the resistor body in two without
disturbing anything next to it. If the left solder pad comes loose, it
may be peeled from the board. Brush or blow away any debris. This
completes the restoration.
REASSEMBLY
----------
7. Insert the top of the front panel into the slot under the volume/squelch
control panel and, noting carefully the alignment of the dual-inline
connector at the bottom of the board, press the front panel firmly into
place. Be sure that the holes at the bottom of the circuit board line
up with the holes in the plastic standoffs below them. Insert the two
screws and gently tighten them.
8. Replace the back cover by inserting the top of the cover into the slot
under the volume/squelch control panel; press the cover into place,
insert and tighten the screws.
9. Reposition the battery retaining spring (slotted side toward notched hole),
insert the two remaining screws and gently but securely tighten them.
10. Slide the battery pack into place; switch the scanner on to make sure the
display comes on. If not, the battery is discharged or the dual-inline
connector was misaligned during assembly (see step 7).
CHECK OUT
---------
11. Assuming the display comes on, press: MANUAL, 845.0, E; within two seconds
the frequency 845.000 should appear on the display.
-----------------------------------------------------------------------------------------------
This file was downloaded from the
HAM on Rye BBS -- (814) 333-4111 -- 2400-8-N-1
**************** Specializing in *******************
Amateur radio, TVRO, scanning, shortwave and clandestine radio