From Steve.Fleckenstein@f7.n911.z100.rhosoft.com Mon Jun 21 18:13:04 1993
From: Steve.Fleckenstein@f7.n911.z100.rhosoft.com (Steve Fleckenstein)
Newsgroups: alt.radio.scanner
Subject: Mods For Bearcat 855xlt
Date: Sat, 19 Jun 1993 21:55:02 -0800

SY>I have a Bearcat 855XLT table top scanner. The manual says that
SY>it is not equiped to receive cellular but I am able to hear some
SY>cell conversations. Whe I tried some of the cell frequencies that
SY>have been posted here I get the "Error" message from the scanner.
SY>Is there a mod for this unit which will restore the missing band??

==========================================================================
 BBS: Red Onion Express
  To: CAMISA VERDE                  Recvd: NO
Subj: (R)BC855XLT                    Conf: (31) SCANZ
   -----------------------------------------------------------------------
             UNIDEN BC-855XLT MODIFICATIONS
 Scope of modifications:
     [1] Allow continuous 800 MHz receive.
     [2] Increase channel capacity from 50 to 100 ch.

                          0   1  2  3  4
            :------------------------------------------:
            |  I          p   p  p  p  p   o o o o o o |
 :----------|  I          |   |  |  |  |               |
 |            [I]         |   |  |  X  X <-- CUT       |
 |            [I] D201    |   |  |  |  |               |
 |            [I]  oooooo |   |  |  |  |               |
 |             I          d   d  d  d  d               |
 |             I------/\/\/\--------|--|               |
 |                                                     |
 |         ADD  4.7K - 22K Ohm (10K works)             |
 |         1/4 watt carbon resistor between            |
 |         diode D201 and lower connection             |
 |         of Jumpers 3 & 4                            |
 |      Jumper 3 - 100 ch.    Jumper 4 - 800 MHz       |
 |-----------------------------------------------------|
 1. Remove 5 screws from bottom of scanner case.
 2. Carefully separate case top and bottom.
 3. Unplug connector to the internal speaker.
 4. Locate diode D201 and 4 jumpers near edge of circuit board.
 5. Cut the 3rd and 4th jumpers near the middle and fold
        downwards, insulate leads, if necessary.
 6. Connect the lower part of jumper 3 & 4 to one end of a 10K
        Ohm 1/4 watt carbon resistor, insulate all exposed leads.
 7. Connect the other resistor lead to the lower connection of
        diode D201, DO NOT cut any leads on D201.
 8. Make sure all exposed leads aren't touching any other
        connections, insulate as required, tack in place
        with a dab of RTV silicone, or low temp hot glue.
 9. Reassemble scanner, make sure to plug the speaker back in.
    You should now have a scanner with 100 chs. numbered 01-00,
        in 5 banks of 20 ch. and continuous 800 MHz coverage.
NOTICE:  This info. is given for authorized, lawful use only.
         For educational purposes and ECPA-86 compliant applications.


 * OLX 2.1 TD * If it ain't broke, don't fix it!