Wireless transmission and reception

[liudengyuan]

How to transmit the signal output by the preamplifier to another circuit wirelessly, can the analog circuit be realized?

[kt315]

analog signal transmit is surely noisy. you must convert the signal in digit form.
take francuase detector DEUS and look. i think chineses are able to copy it and to give us a kit for lowest price.

[Carl-NC]

How to transmit the signal output by the preamplifier to another circuit wirelessly, can the analog circuit be realized?

Why would you want to do that?

[Skippy]

You would need stereo transmission. The transmit signal would need to be sent too, so you could synchronise the Receive. If you only sent the RX, you would have an all-metal only system, which may be OK for pinpointing, or cache hunting, example: a two-box detector. Or measuring ground signal strength for survey purposes.
Sending demodulated signals would make more sense, but they are effectively DC signals ( DC to 100 Hz ) and not easy to transmit either. You couldn't feed them into any audio transmitter, even a digital one, as they filter out DC and the lowest AC signals.
Are you trying to make a data logger add-on to a detector?

[WM6]

Why would you want to do that?

Probably he want to put preamp in coil and connect it wirereslly to next part of circuit.

[liudengyuan]

yes

[Carl-NC]

Liudengyuan, the reason I asked is because, right now, you don't even have a working circuit. Trying to add wireless is something you might try when everything else is done. But, in my opinion, a cable is a far far easier, cheaper, and higher-performing solution.