116 lines
5.0 KiB
Plaintext
116 lines
5.0 KiB
Plaintext
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BEARCAT 200XLT CELLULAR FREQUENCY RESTORATION
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AKNOWLEDGEMENTS
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---------------
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The following was extracted, and partially edited, from literature
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received from:
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MONITORING TIMES
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140 Dog Branch Road
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Brasstown, North Carolina 28902
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If the reader desires to obtain the original literature, which comes
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complete with an illustration of the circuit board and indication of
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the resistor to be cut, a check for $2.00 along with a stamped self-
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addressed envelope may be mailed to the above address. The turn-
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around for my literature was very fast (Less than 1 week after
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mailing my check). Although the directions presented here should be
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quite adequate, the quick turn-around on the mail order literature
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might provide the extra measure of visual security that some desire.
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The documentation also includes a review of the BC200/205XLT scanner.
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NOTES
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-----
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It is unlawful to monitor cellular telephone conversations. It is
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possible to monitor signals from the deleted ranges even without
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conversion. Simply add 21.7 MHZ to the deleted frequency and enter
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the higher (image) frequency. Reception is virtually identical in
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strength to that which would be heard on the deleted frequency.
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The frequencies deleted at the factory may be restored, but the
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procedure should not be attempted by anyone unfamiliar with
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electronic circuitry. No one anywhere, anytime, in anyway, etc...
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assumes any reponsibility for damage caused by this procedure.
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THIS MODIFICATION WILL VOID YOUR WARRANTY!
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TOOLS
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-----
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Small Philips Screwdriver
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Small Wire Cutters
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DISASSEMBLY
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-----------
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1. Slide off the battery pack and remove your antenna.
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2. Remove the two screws from the back of the scanner, the two
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screws which hold the battery retaining spring at the base, and
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the battery retaining spring itself.
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3. Carefully pry the bottom of the rear cover from the radio and
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remove the cover.
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4. Locate the two small screws at the base of the circuit board and
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remove them. Gently pull the front panel from the mainframe at
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the base and seperate them.
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MODIFICATION
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------------
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5. On the face of the circuit board that faces the front of the
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scanner when installed, locate the microprocessor IC labeled
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"UNIDEN UC-1147". Locate the 10K ohm resistor (brown, black,
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orange), which is positioned approximately along the longitud
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inal centerline of the board, and next to the microprocessor.
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The resistor is of the leadless type and should be positioned
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directly next to the microprocessor and above the "DEN" on the
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IC label.
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6. Using the small wire cutters, cut the resistor body in two with
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out disturbing anything next to it. If the left solder pad comes
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loose, it may be peeled from the board. Brush or blow away any
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debris. This completes the restoration.
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REASSEMBLY
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----------
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7. Insert the top of the front panel into the slot under the
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volume/squelch control panel and, noting carefully the align
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ment of the dual-inline connector at the bottom of the board,
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press the front panel firmly into place. Be sure that the
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holes at the bottom of the circuit board line up with the
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holes in the plastic standoffs below them. Insert the two
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screws and gently tighten them.
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8. Replace the back cover by inserting the top of the cover into
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the slot under the volume/squelch control panel; press the cover
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into place, insert and tighten the screws.
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9. Reposition the battery retaining spring (slotted side toward
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notched hole), insert the two remaining screws and gently but
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securely tighten them.
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10 Slide the battery pack into place; switch the scanner on to make
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sure the display comes on. If not, the battery is discharged or
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the dual-inline connector was misaligned during assembly (see
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step 7).
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CHECK OUT
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---------
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11. Assuming the display comes on, press: MANUAL, 845.0, E; within
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two seconds the frequency 845.000 should appear on the display.
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