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I would like a simple device which enables me to transmit a beep every second or so on a chosen frequency.

Is anyone aware of a product that can do this?

If not, can anyone tell me what you would call this so I can work out how to make one? I have been searching for all sorts of terms, but I have no technical understanding of what I am trying to find.

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closed as unclear what you're asking by Marcus Müller, Kevin Reid AG6YO Mar 14 at 14:19

Please clarify your specific problem or add additional details to highlight exactly what you need. As it's currently written, it’s hard to tell exactly what you're asking. 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.

  • $\begingroup$ How do you wish to generate the beep and the timing? Would a simple handheld transmitter work for you? $\endgroup$ – Chris K8NVH Mar 14 at 11:11
  • $\begingroup$ Do you mean FM broadcast band (88-108 MHz) or FM modulation on some amateur legal band? $\endgroup$ – Zeiss Ikon Mar 14 at 11:27
  • $\begingroup$ range is not defined by the transmitter alone, but by the power and "cleanness" of the transmitter, by the sensitivity of the receiver and noise and interference. See: Link budget. Without even giving band information, and saying which probability of detection is acceptable to you (nothing is ever 100% certain in wireless comms), we can't help you. $\endgroup$ – Marcus Müller Mar 14 at 12:31
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    $\begingroup$ Please edit your question to include more details of what you need, as mentioned in the comments. $\endgroup$ – Kevin Reid AG6YO Mar 14 at 14:21
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In the U.S., FCC regulations limit unlicensed broadcast-band FM transmission to a range of about 100 to 200 feet. Read about Part 15 Devices here: https://www.fcc.gov/media/radio/low-power-radio-general-information

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Your question is unclear, but if you're talking about a Ham transmitter in the U.S. (and you're a licensed ham), then I'd look into the Ham shield for an Arduino. It's a shield for an Arduino along with a (poorly documented) library that lets you control it. With that you can program it to do pretty much whatever you'd like.

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