We have a 2001 VW Eurovan that
had three keys, two of which are the
remote control key fob type, and one
smaller "valet" key. My wife has lost
both of the remote keys, somewhere
here in our house. The dealer wants
over $200.00 per key to replace them.
I tried to copy the remaining key at
our local home center. They were able
to grind a new key blank, but a tester
showed that the original had an RF
chip that prevents the copied key
from being used.
Can a device be made or
purchased that will emulate the signal
the car sends to excite the RF chip
and detect if a key is nearby? I could
use that to search our house for the
key. If it can tell me if a key is close
by, that would enable me to narrow
our search and find it without tearing
the whole house apart.
#9041 Jim Balderrama
San Diego, CA
from the charging of the output
coupling capacitor of a bass guitar
amp that uses a single 90-volt
supply? Manual switching is not
adequate because it does not protect
against someone messing with the
power cord wall plug.
#9043 Dennis Green
I am trying to find info on a kit
that was offered back in Radio
Electronics magazine, called the
HyperClock. It was offered by an
outfit named Ski Tronix, around 1991.
I built one back in high school, and it
has just now failed. I cannot locate the
schematics or magazine issue that
featured it. Searching the web has not
We use a Barcus Berry model
Model 4000N piano mic at our
church. Remembering to change
batteries every couple of months
before we are in the middle of a
service is a pain. I want to convert our
mic to be phantom powered from our
audio mixer. Has anyone done this
and can offer some advice?
#9044 Steven Morgan
Does anyone have a simple
circuit for taming the turn-on thump
I do quite a lot of 35mm motion
picture projection work, and wonder
how close to 24 frames per second
the projector is actually operating. Is
there a circuit for some sort of sensor
that I can hold in front of the lens and
measure the FPS count?
#9045 Edward Vanoverschelde
I have two questions. First, what
happens when an EXE file is run on a
PC? I would like to know where the
contents of an EXE file will be loaded,
and so on. Second, I am confused
with partitions on the hard disk drive.
I would like to know how the
partitions (i.e., C, D, etc.) are
represented on the disk.
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[6041 - June 2004]
Does anyone know how I might
construct a relatively simple field
strength meter to orient a UHF
antenna while I’m perched on a
ladder? The circuit would be tuned
to one specific frequency — say 500
#1 I used to work on TV antennas
for Sears and couldn't stomach the
$300.00 price of an antenna meter,