Ultrasonic Sensor

Hi,
I have built the ultrasonic sensor ranger with the help of

http://www.eetasia.com/ARTICLES/2002MAR/2002MAR08_RFD_DA_AN.PDF

but it is not working.

Explanation of the sensor:

Base on the availability of the component I choose,

( I )

1. ICM7555 instead of TLC555
2. CA3130  instead of CA5160 and
3. LM567.
4. PIEZO ULTRASONIC SENSOR: Module T40-1601

R40-1601,
                                                  Center Frequency:
40.0khz, with 1.0 khz variation. Etc.

( I I )

1. Since the reset pin is remain high after given power on transmitter
module, I am adding 10k resistance between ground and reset pin.

2. At 5 volt supply [after step ( I I ) . 1 ] to the reset pin, it is
generating ultrasonic sound.
    (Test cond: make  CT capacitor value dauble of the transmitter,
now this will generate nearly 20khz frequency. This range can be
tested on multimeter audible frequency tester.)

( I I I )

Nothing happed on receiving end.

Please take look in this issue, and tell me the possible way to solve
it.

Thanks

Dibyendu