The AD70U is a pretty common adapter for Uniden, and is the one used by the
SC-150. I assumed he had the adapter already, so I didn't supply the info.
FYI, it is a 12 volt, 200ma supply, 9 volt is a little low, if you operate
the scanner at the same time you are attempting to charge the battery.



"Beloved Leader" wrote in message
om...
(j) wrote in message
. com...

Ok I broke out my old uniden sportcat 150 , because I finally bought a
new battery for it.

I have three (I think) SC180B scanners. (The "B" means that the case
is black.) Because I bought them on closeout at Best Buy, various
parts were not included - sometimes there would be no antenna,
sometimes no owner's manual, and sometimes no wall wart.

It may be the case that the SC180 and SC150 use the same wall wart.
The Bearcat owner's manual, which I have downloaded in .pdf format,
says that the correct AC adapter/charger for the SC180 is the AD-70U.
The wall wart I am using is made for an AT&T device, probably an
answering machine. The model number is 350902002COA, and the part
number is MA14L-2001-0012#A. It can supply 200 mA at 9VDC, with the
tip having positive polarity. I am using a homemade battery pack, as
one of the cells in the original battery pack was defective. I think
each NiCd AA cell in my homemade pack is rated at 600 mAh.

That combination works for me.

"M.S." wrote in message ...

FYI, it is a 12 volt, 200ma supply, 9 volt is a little low, if you operate
the scanner at the same time you are attempting to charge the battery.

Thanks. I hadn't known that. I haven't noticed any problems along
those lines, but since I've never tried using the correct adapter, I
have no way of knowing how much better the performance would be with
the right part in place.

I assume (yeah, dangerous) that there is an internal regulator in the
SC180B to drop the wall wart's output voltage to the correct voltage
for charging the cells in the battery pack. Whether Vcc for the
scanner is that lower, regulated voltage, I have no way of knowing.
Anybody have an online schematic for that scanner?

BTW, I like the SC180B a lot. I think it's my favorite handheld. I'm
kind of surprised I feel that way, as I been wary of the idea of
Uniden's proprietary battery pack. I have learned that they are easily
disassembled for replacing bad individual cells as they fail, so it's
not the issue I had thought it woud be. I have made a few spare
battery packs by now. The plugs are commonly found in cordless phones,
as are spare cells. I have a whole bunch of cordless phones that I
have liberated from the trash piles.

The manual for my 150 states (somewhere, I don't have it handy right now)
that when the battery is discharged and you operate the scanner while
charging the battery, it will take longer to recharge the battery. I would
think that feeding it 9 volts instead of the 12 volts it's expecting would
have some effect. Further than that I do not know.

My SC-150 is a favorite. Even though it lacks the bells and whistles of
some of my newer scanners, I can't bring myself to part with it. Still on
the original battery pack, BTW.

M

"Beloved Leader" wrote in message
om...
"M.S." wrote in message
...

FYI, it is a 12 volt, 200ma supply, 9 volt is a little low, if you
operate
the scanner at the same time you are attempting to charge the battery.

Thanks. I hadn't known that. I haven't noticed any problems along
those lines, but since I've never tried using the correct adapter, I
have no way of knowing how much better the performance would be with
the right part in place.

I assume (yeah, dangerous) that there is an internal regulator in the
SC180B to drop the wall wart's output voltage to the correct voltage
for charging the cells in the battery pack. Whether Vcc for the
scanner is that lower, regulated voltage, I have no way of knowing.
Anybody have an online schematic for that scanner?

BTW, I like the SC180B a lot. I think it's my favorite handheld. I'm
kind of surprised I feel that way, as I been wary of the idea of
Uniden's proprietary battery pack. I have learned that they are easily
disassembled for replacing bad individual cells as they fail, so it's
not the issue I had thought it woud be. I have made a few spare
battery packs by now. The plugs are commonly found in cordless phones,
as are spare cells. I have a whole bunch of cordless phones that I
have liberated from the trash piles.