0
$\begingroup$

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.

$\endgroup$
  • $\begingroup$ How do you wish to generate the beep and the timing? Would a simple handheld transmitter work for you? $\endgroup$ – Chris K8NVH Mar 14 '19 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 '19 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 '19 at 12:31
  • 1
    $\begingroup$ Please edit your question to include more details of what you need, as mentioned in the comments. $\endgroup$ – Kevin Reid AG6YO Mar 14 '19 at 14:21
1
$\begingroup$

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

| improve this answer | |
$\endgroup$
0
$\begingroup$

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.

| improve this answer | |
$\endgroup$

Not the answer you're looking for? Browse other questions tagged or ask your own question.