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29 paź 2018 · Tone – For most repeaters, you will need to transmit a CTCSS tone to access the repeater. (CTCSS is Continuous Tone Coded Squelch System.) Repeaters with carrier access do not require a tone, so you can skip this step. This is normally a two-step process: set the tone frequency and then enable the tone.
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7 gru 2005 · If you live in a rural area, tones really aren't that big of a deal. The more urban your area is, they higher chance of another agency being assigned the same frequency you are wanting to monitor. Using your tones will help filter out the unwanted traffic.
12 lip 2024 · PL Tone: PL (private line) tones or CTCSS (continuous tone-coded squelch system) tones are sub-audible tones of 300 Hz and below that are transmitted and detected by radios and repeaters. The tone is transmitted when you talk, and the repeater lets you through if you’re using the correct tone.
Tone signaling works especially well on FM because the received audio is spot-on in terms of frequency (unlike SSB, where the precision of the tuning can affect the frequency of the recovered audio). On FM VHF and higher, we use tones to perform many functions, including activating repeaters, controlling repeaters, accessing IRLP links and ...
20 sty 2014 · Tone Squelch tells the repeater to respond only to stations that encode or send the proper tone. Most repeaters are “PL’ed”, due to the sheer number of radios and repeaters in their area. A repeater tone filters noise by adding a low-frequency audio tone to the voice.
DTMF is used in ham radio in applications such as IRLP and Echolink, as a means to dial outside numbers via phone patch and as a means for repeater owners to configure the system remotely. It is sometimes known as tone dialing and allows the user to send a series of tones that activate or disable a remote repeater or service.
Learn how FM repeaters work. Offsets, CTCSS tones, duplexers, controllers and more.