Getting an extra smart key plus wheel key...

ChrisSlicks · 01-09-2011, 07:02 PM

Quote:

Originally Posted by Red__Zed

It does not. The transmission is inversely proportional to received power level.

I've taken one of the fobs apart and actually played with the circuitry. Where do you gather that the transmission level is fixed?

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.

Red__Zed · 01-09-2011, 07:49 PM

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.

ChrisSlicks · 01-10-2011, 07:17 AM

Quote:

Originally Posted by Red__Zed

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.

Ah, gotcha. And in the case of a dead battery it basically is a passive RFID. +rep for doing the extra digging.

LunaZ · 01-09-2011, 07:58 PM

Quote:

Originally Posted by Red__Zed

It does not. The transmission is inversely proportional to received power level.

I've taken one of the fobs apart and actually played with the circuitry. Where do you gather that the transmission level is fixed?

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.

What prompted you guys to dissect your fobs?

Lemers · 01-09-2011, 08:04 PM

Quote:

Originally Posted by LunaZ

What prompted you guys to dissect your fobs?

My FOB is bigger than your FOB

Red__Zed · 01-09-2011, 08:34 PM

Quote:

Originally Posted by LunaZ

What prompted you guys to dissect your fobs?

being an engineer

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Viper Alarms on Special! Get Smart Start!, Sales & Installation!	Tray@Forged	Video/Audio	110	03-06-2012 09:37 PM
Gtechniq Smart surface nanotech - paint protection	AH370Z	Exterior & Interior	0	10-15-2009 07:52 PM
Smart Cars using a Suzuki Hayabusa 1300cc	BanningZ	Other Vehicles	12	05-31-2009 12:29 AM