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I want some advices about a radio transmistter,actually this radio trasmitter is more a location transmitter which transmits at about 512Hz.I want to know how could i design a transmiter and a receiver at this frequency,is it some ic that could do this or do i need to use some discret components ? With the receiver i want something like a device that show me when i am really close to the transmitter.It's called 512Hz sonde. Example: https://www.ridgid.com/us/en/remote-transmitter

Thank you !

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closed as too broad by Leon Heller, Null, PeterJ, Daniel Grillo, Dave Tweed Oct 4 '15 at 15:07

Please edit the question to limit it to a specific problem with enough detail to identify an adequate answer. Avoid asking multiple distinct questions at once. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.

  • \$\begingroup\$ This is WAY too broad. If you want to get an answer, add some application specifications. \$\endgroup\$ – Funkyguy Sep 30 '15 at 18:33
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    \$\begingroup\$ Why such a low frequency? An optimal antenna will be many kilometers long. In fact it would probably be easier to find the antenna and track it to the transmitter, than to build a matching directionally sensitive receiver for it. \$\endgroup\$ – jippie Sep 30 '15 at 18:36
  • \$\begingroup\$ Ok,i want to have a device which is equipped with a radio transmitter which will be "inserted" in sewage pipe and i want to locate with a radio receiver from surface.All i want to know is when i am really close to the device. @jippie i saw some devices that operate at this frequency, i don't have any claims about frequency just to pass through ground(4-5 meters). \$\endgroup\$ – Stefan Merfu Sep 30 '15 at 18:37
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What i was looking is LFMC(Low-Frequency Magnet Transmitter).

A good application note : http://ww1.microchip.com/downloads/en/AppNotes/00232B.pdf

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