[TrunkCom] 250 heat issue

Fri, 10 Jan 2003 13:45:46 EST

In a message dated 1/8/03 11:05:37 PM Central Standard Time, 
[email protected] writes:

> [email protected] wrote:
> > If any of you are having trouble with your 250s heating up, I would 
> suggest 
> > calling Uniden.  They shouldn't do that.  Uniden might have gotten wrong 
> > chargers.  500mah instead of 200/300mah.  Unless 500mah is needed for 
> power 
> > only with the digital card installed.
> 
> The pre-production model I did an early review on for National 
> Communications also came with the 500ma wall wart.
> 
> The included pack is a NiMh pack, and 500ma would be charging at the C/3 
> rate. I don't recall the exact specs for NiMh batteries, but getting 
> this warm is not a good thing.
> 

Tom and the group, I remember reading somewhere that the current limiter 
inside the scanner (there should be one) cuts down the current going to the 
battery pack to 200ma. I believe Uniden used a 500ma wal-wart to supply 
enough current to charge the battery WHILE USING the scanner. I'm not sure 
what the current draw is but I'm sure it's more than the BC-245 especially 
with the BCi25D card installed.

I also have the Metrowest Pro-power 3 charger/scanner stand that I used for 
my BC-235/245/3000 but it only puts out 130ma so I don't know it it will 
actually charge the battery if I have the scanner on while charging. Even if 
the scanner is off I wonder if 130ma is enough to get through the current 
limiter and charge the battery? Any electonics gurus have an idea?

I might try to modify the charger to put out 200ma.

I just got my BC-250D and BCi25D on Wed and haven't had much time to play but 
it seems to work great on Moto Type II conventional and Astro Digital TRS's 
It sounds just like my Astro Saber on the digital TRS.

Dave                        Chicago Area Radio Monitoring Association
N9DAV                      Chicago FireNet / Incident Page Network
[email protected]                SARC / WAFAR / FISHFAR
[email protected]            145.230   443.600    442.900

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