Anybody know Bill Cheeks' third mod to BC 200xlt?

Anybody know Bill Cheeks' third mod to BC 200xlt?

Post by Steven William » Tue, 18 Feb 1997 04:00:00

which ones do you have now. I show cell mod 1, different cell mod 2 ,
doubling batt power 3, and speeding up search/scan 4. any of those what you
are looking for? they are in vol. 2 of his book.



 
 
 

Anybody know Bill Cheeks' third mod to BC 200xlt?

Post by wig.. » Thu, 20 Feb 1997 04:00:00



>On Mon, 17 Feb 1997 22:36:14 GMT, "Steven Williams"

>>which ones do you have now. I show cell mod 1, different cell mod 2 ,
>>doubling batt power 3, and speeding up search/scan 4. any of those what you
>>are looking for? they are in vol. 2 of his book.



>I am trying to restore cellular.  The only mod I know of involves
>cutting the resistor in front of the Uniden microprocessor. Someone
>else mentioned that Bill Cheek had a second and third mod for the BC
>200xlt in the case that there were flat resistors instead (hope I got
>that right).  In fact, here is the clip of what was said.  I plan to
>buy the book, but was hoping to find out if the mod is what I need.  I
>don't have the 10k ohm leadless resistor that is talked about.   I
>believe I have the surface mount.  Here goes:

>There are about three of them. Two of them you will find on the net,
>if those two dont work, you will have to use the third one discribed
>in Bill Cheek's Ultimate Scanner Book. Go to www.altavista.com and
>type in "200xlt" in the search blank. You should find it after a
>couple clicks of the mouse. Sometimes the resistor will be a carbon or
>a surface mount.
>You might as well do the low battery and speed-up mod while you are at
>it.

Those were my words in response to a question about modifications to a
BC200XLT. The latest 200xlt that I modified had a surface mount resistor.
The date code was "OAID". Somehow in the back of my mind I think that it
may have been one of the last date codes that were modifiable. The regular
modification of removing this resistor proved to work very well. I would
attempt to do this first. Whether it is a carbon resistor or a surface mount
it is in the same place. Bill Cheek's mod is the same up to this point then
takes it a step further by changing the logic state. If you are aready going
to get the Ultimate Scanner book then it will be alot better than what I
could refer to you off the top of my head. Also, I respect Bill alot and
would not divulge information that he has worked to obtain without having
his permission to do so.
    Bottom line, just do the regular mod of removing the 100k resistor above
the CPU and see if it works. If it doesnt, then go get the Ultimate Scanner
book and find out what crystal you need to order for the scan speed mod,
read up on the battery indicator mod and find out what you need to do the
3rd mod to receive cellular frequencies. Another tip, the BC200xlt scans
the cell frequencies in 12.5kHz, not the true 30kHz steps....that will save
you another few minutes of head scratching.

Wiggie