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Posted by Tim Mitchell on 09/20/05 10:46
In article <1127176384.746153.158320@g47g2000cwa.googlegroups.com>,
Sham.Sansoy@gmail.com writes
>Hi,
>
>I recently bought a 2.4 ghz RC camera to attach to an RC heli.
>
>The system is a small camera with built in transmitter which connects
>to a 9V square type battery (PP3).
>
>This then transmits to a receiver unit which is connected via a
>composite video cable to a belkin USB video input device, which then
>goes into a laptop for recording and viewing in the field.
>
>I have tested this set-up around the house, and the quality is pretty
>good - however, how do you guys hook up your receivers outdoors?
>
>I suspect most come with a 12V power adaptor like mine does.
>
>I have everything set up for a "true" wireless camera system, but the
>problem is powering the receiver.
>
>This camera system is a cheap one I bought from Ebay (although the
>quality is excellent). Sadly, it doesn't mention what the power rating
>of the receiver is, but it looks suspiciously like this one:
>
>http://cgi.ebay.com/Wireless-Mini-color-Spy-Cam-camera-RC-Helicopter_W0Q
>QitemZ6000015742QQcategoryZ2563QQssPageNameZWDVWQQrdZ1QQcmdZViewItem
>
>Except my receiver has "KTK" written on it in the same font as opposed
>to "JMK".
>
>Has anyone with a similar set-up been able to power their receiver with
>a 9V battery? My receiver does say 9-12V next to the power input socket
>although no mention of current is given (may be 500ma if it is the same
>as the one above, except mine also transmits audio).
>
A 12V lead-acid battery such as those used in UPS's or for intruder
alarm systems would power it nicely. They do not use that much power.
One of the small square 9V batteries might do it for a couple of hours.
Or (as you're into RC modelling) some RC cars use 12V lead acids for
power, your model shop might have something to do it.
--
Tim Mitchell
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