Re: Function generators + boosters (Only for Users) II
SWR said:
architecad said:
Hi Fellows
I like to talk about Function Generators and boosters. Let's keep in subject.
Arch
What are you wanting or trying to boost?
Maybe I can help.
From the Original Post, and Arch's previous topic of the same title, it looks like they are trying to boost the output of a function generator. However they have two major problems to solve before that, if it they ever succeed at it, will be of any use as a so-called "MFD."
They will also need some kind of a receiver section, if they want to detect the "return" signal, from resonating a gold target.
But before they even think about doing that, they need to determine if they can produce some kind of a transmission which will cause a gold target, at a distance, to resonate. And according to rocky, in the first thread of this, they have not achieved confirmation of that yet.
And, of course, they will then need to determine if the resonating gold target will produce it's own signal, strong enough to make it back to their machine, and be detected by it's receiver section. Also, in order to detect it, they will need to determine what kind of return signal it is, in the first place---that is, if they intend to stimulate the target with other than the fundamental frequency, they will need to build a receiver which is tuned to the fundamental, at least in the first stage.
In addition, if they plan on slewing the transmitted frequency around, as they have mentioned, they will need to build the receiver section to accurately follow those changes. And they will need some timing and gating circuitry so that the receiver is off when the transmitter is sending, otherwise it will be just one nasty feedback loop.
So far, all I've heard in the way of design is that they plan to air-couple the output of a sound system audio amplifier to a relatively short whip antenna, which doesn't sound very promising, to me, in any regard.
The whole thing sounds more entertaining than interesting. But I guess we'll see what else they propose.
P.S. They seem to have lost interest in the swingy-thingy LRLs. Maybe we need a list for MFDs?
