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Charger383
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BC2500XLT Modifications
The page notes that the modification may not be really necessary, because
you can still hear the cellular communications in the image frequencies
21.6 MHz higher that the true cellular ranges. Thus, you will hear cellular
calls in the 894.01 to 915.60 MHz range on your BC2500XLT without modification.
1. Remove the antenna and battery pack from the BC2500XLT. Lay it on its
face on a soft cloth or towel, bottom of the radio facing you. Remove
the two upper (black) and two lower (chrome) screws.
2. Carefully pry the back loose from the radio and lift it off. Similarly,
grasp the visible circuit board by the edges and carefully pull it away
from the radio just far enough to separate it from the white (11 pin)
Molex connector. Do not stretch the remaining ribbon connector.
Lay the board alongside the radio.
3. Locate microprocessor chip "UNIDEN UC-1513A", the speaker, and the
battery terminals. Below the microprocessor and above the speaker
and battery terminals, locate the cluster of chip resistors marked "104".
Using a magnifier and fine-point soldering iron, unsolder the lower-left-
most chip resistor and move it one place to the left, soldering it in place.
Cellular restoration is now complete. Reassemble the radio by reversing
steps 1 and 2, and test it by entering 879.990 MHz. Search steps in this
range will be the correct 30 kHz.
Also keep in mind that there are at least two versions of the BC2500XLT.
I don't know whether these modification applies to all versions.
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The page notes that the modification may not be really necessary, because
you can still hear the cellular communications in the image frequencies
21.6 MHz higher that the true cellular ranges. Thus, you will hear cellular
calls in the 894.01 to 915.60 MHz range on your BC2500XLT without modification.
1. Remove the antenna and battery pack from the BC2500XLT. Lay it on its
face on a soft cloth or towel, bottom of the radio facing you. Remove
the two upper (black) and two lower (chrome) screws.
2. Carefully pry the back loose from the radio and lift it off. Similarly,
grasp the visible circuit board by the edges and carefully pull it away
from the radio just far enough to separate it from the white (11 pin)
Molex connector. Do not stretch the remaining ribbon connector.
Lay the board alongside the radio.
3. Locate microprocessor chip "UNIDEN UC-1513A", the speaker, and the
battery terminals. Below the microprocessor and above the speaker
and battery terminals, locate the cluster of chip resistors marked "104".
Using a magnifier and fine-point soldering iron, unsolder the lower-left-
most chip resistor and move it one place to the left, soldering it in place.
Cellular restoration is now complete. Reassemble the radio by reversing
steps 1 and 2, and test it by entering 879.990 MHz. Search steps in this
range will be the correct 30 kHz.
Also keep in mind that there are at least two versions of the BC2500XLT.
I don't know whether these modification applies to all versions.