Frequency discriminator and all-electronic receiver

[Napsterce]

Post what you have been doing here so that someone can help you.

[Mike(Mont)]

I've been working this project without any external help unless somebody wants to invest $100,000. I used the wrong transistors and the power was like four times too much. So when adjusting the power gain, the circuit would go from zero to full blast. There was only a tiny window of adjustment. So the correct transistors should clear up this problem. Won't know until i get the parts. My concerns centered around the fact that I am electronically ignorant and illiterate. I didn't know what would happen by downsizing the circuit board. I've heard of self-oscillation and it's hard to see through the fog when the parts are wrong to start with. So I am learning as I go and no doubt there will be more obstacles. Thanks for your offer to help.

[Mike(Mont)]

Bad news, the correct transistors didn't help any. So I am going to try to use the P.C. oscilloscope and see if I can figure out how t use it.

[Mike(Mont)]

My latest attempt is to add a resistor on the main input so things are more balanced. I don't know, I may never get this thing figured out. There's just too much stuff I don't know.

[Mike(Mont)]

Still have the "too much power" issue but I got the thing working today with a few loose wires to finish yet. So hopefully soon i'll have this ready to try out in the real world. I don't know why I'm not more excited about this. It's been a huge headache and unbelievable frustration pretty much every day. I guess I don't believe it yet. It still needs work, hard to tune, etc. Still a real PITA.

[Mike(Mont)]

Here is a photo of the electronic receiver. You scan the area where the transmitter is pointing towards and narrow down the beeping until just a few clicks as you sweep past the target.

[WM6]

Nice design. Hope it will works according your expectations.

[Mike(Mont)]

Ah, another Tinker Toy fan. This "design" was one of those see-how-fast-you-can-put-something-together, part 2. Really needs some kind of "Star Wars" case to get people's attention. All that artsy-fartsy stuff is not my forte.

[HaFar2010]

Hell
Dear all.

I received a pic. Its sender claims that it is a perfect detector. Is anyone that have some information about it?

[Mike(Mont)]

Two-way radio?

[Bill512]

Here is a photo of the electronic receiver. You scan the area where the transmitter is pointing towards and narrow down the beeping until just a few clicks as you sweep past the target.

Mike, give us some info about this system (whatever you can share...)
This receiver actually can trace electronically the "target line"???
By the term electronically , i mean only electronics - (not electronically "assisted", swivel rods , pendulums etc...)

[HaFar2010]

It has only a prob! but it detects all targets using a radar program, which include their type and gps code for exact location.

[WM6]

it detects all targets using a radar program, which include their type and gps code for exact location.

If it not dig targets too - it is worthless.

[Mike(Mont)]

Mike, give us some info about this system (whatever you can share...)
This receiver actually can trace electronically the "target line"???
By the term electronically , i mean only electronics - (not electronically "assisted", swivel rods , pendulums etc...)

Don't know if "signal line" tracing is an accurate description as that reminds me of walking an "S" pattern with L-rods. But "finding the line to the target" is looking/aiming right down the signal line (from transmitter) like down the barrel of a gun. So yeah, you have to move the receiver/antenna and find the anomaly, where the device sounds off, then check it out further for size, shape, from other angles. Something like a metal detector. The newer Gold Gun with the transmitter might be somewhat similar but never seen one.

[Bill512]

Mike, I guess that this TX/RX system it's the Magnacast configuration.