Many handheld portable radios use some sort of tone sequence burst to open up the squelch on the receiver. Is there any standardization on the tone burst systems? Or does each manufacturer use it's own system which is incompatible with others?
Yes I know you can listen to all signals using only noise squelch, and thus communicate on the same RF channel between any brands of radios.
Do any FRS radios have plain CTCSS (subaudible tone squelch)?
Yes I know you can listen to all signals using only noise squelch, and thus communicate on the same RF channel between any brands of radios.
Do any FRS radios have plain CTCSS (subaudible tone squelch)?