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downlink_tone [2019/02/10 22:45] kd6kpc |
downlink_tone [2019/03/09 16:26] KD6KPC |
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The tone system can also be applied to the downlink tone to limit interference and noise on the user's radio. There are many sources of noise that can break the set squelch threshold, even though the repeater is not transmitting. Although the radio will still internally " | The tone system can also be applied to the downlink tone to limit interference and noise on the user's radio. There are many sources of noise that can break the set squelch threshold, even though the repeater is not transmitting. Although the radio will still internally " | ||
- | To reduce confusion as to which tone is being referenced in terms of a paired frequency set (duplex with separate input and output frequencies, | + | Not all repeaters use a downlink tone. If a user sets tone squelch in their radio on a tone that is not being transmitted by the repeater, the squelch will never open and the user will never hear a transmission. Also, repeaters may not transmit the same tone that is used to receive (uplink). This is called " |
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+ | Downlink tone is not a term that is recognized by most amateurs and you probably won't see it in many radio manuals. Although, Yaesu tends to use the term. It's even been discussed on [[https:// | ||
Confusion sometimes occurs when it is not known from which radio, the user's or the repeater' | Confusion sometimes occurs when it is not known from which radio, the user's or the repeater' | ||
RepeaterBook enters and displays data from the perspective of the remote (user) radio. | RepeaterBook enters and displays data from the perspective of the remote (user) radio. | ||
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+ | ==== Why Program a Downlink Tone ==== | ||