4 ms·Assuming you mean “low thousands” by that, you can get them for under a third of that price easily.by jsjohnst 7y agoAssuming you mean “low thousands” by that, you can get them for under a third of that price easily.IshKebab 7y agoCheaper ones can track a single connection, but they can't listen to all channels simultaneously.jsjohnst 7y agoThere are a handful of SDRs that can handle 80MHz for well under $1k.