01-09-2011, 07:49 PM
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#18 (permalink)
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A True Z Fanatic
Join Date: Jul 2010
Location: window seat
Posts: 28,940
Drives: Mostly on two wheels
Rep Power: 120
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Quote:
Originally Posted by ChrisSlicks
When I took mine apart I didn't identify anything that could control the transmitter power. Are you saying you actually measured the output? I didn't go as far as actually probing the circuit so if that's the case it is interesting. But I'll still keep the key in my pocket and replace the $1 battery when the time comes.  |
I keep mine in my pocket as well. I was just answering OP's question.
More accurately, TX power stays roughly the same, but the more power is received, the less that needs to be supplied by the battery. With a high enough RX power, the unit functions almost as a passive RFID.
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