Who, Gary built a circuit pulse?

[yhl]

I need your suggestions on the circuit. a better picture of success. I need to see internal pictures.

[kt315]

is it you mean?

http://www3.telus.net/chemelec/Proje...-2/Metal-2.htm

[yhl]

Thank you

Yes. I mean, who else the Gary asked construction of pulse 1. Want to study together. I want to see people building the internal image
.
http://www3.telus.net/chemelec/Proje...-2/Metal-2.htm I've seen it. I want to consult part substitution thing. I do not have a lot of parts. hoping to find replacement The.
I successfully got board, but a few parts do not. detection depth is low.

[yhl]

LF357 what can replace

LF357 what can replace, I have a TL081 and AD811.