M.Omer

Audioguru, I'm in a fix regarding the PCB designing. One of my friend says that as this circuit is designed to work at high frequencies, I shouldn't make this by hand. As the lines would act as inductances and I might ruin the circuit. But, another one says that as I am not using any of the lines as inductances, I should make this one myself as it won't really matter. Tell me, does this circuit requires designing the PCB on protel (or any other software for that matter) or not?

Thanks. =) Let's see if this circuit does the trick for me or not! I have one more thing to ask, AN920 said, By using the BFR90A at 10mA, the maximum gain we get is around 18dBs and that too around 80Mhz. Is this sufficient enough for detecting bugs or do I have to add a something else to increase the gain? Later.

@ Eplanet, Dude, you are giving me goosebumps! Three times? =O lol Audioguru, Wouldn't the PCB design change if I use the modification given by AN920?

Thanks a lot. I'll let you know of my progress and any setbacks I face during this. Later. =)

Thanks! =) I have some other questions. 1. What exactly do you mean by turning-up or turning-down the sensitivity? 2. In on of the replies, you said that we can replace the R7 by a High-Q parallel LC circuit. What exactly would that do? 3. The physical dimensions of the PCB? 4. Is the bare diagram of the PCb and it's parts is correct here. As I really want to make this thing work, I want to be sure of the basic things. 5. Has this actually worked for someone out here? Fir instance, Maroela and eplanet. xD 6. Is there any way I could increase the sensitivity of this device so that it would detect only the bugs and not the radio stations etc.? 7. I read those improvements AN920 put forward. What exaclty do they do? Later.

1. Could anyone of you please tell me the physical dimensions of the PCB? 2. What could possibly go wrong with this project? This would be my first project and I don't want to have bad dreams regarding this one for the rest of my life. ;D Later.