Question about Motorola Talkabout T5720 (7 Channels) 2-Way Radio
i bought the same pair of motorola, and i hav the exact same problem
i found out that they work good only when they are on the same channel but the sub channel must be set on 0.
for example channel 22 sub channel 0 .
Posted on Apr 28, 2008
Check the Continuous Tone Coded Squelch (CTCSS) settings on all the radios. (Note that some manufacturers refer to this feature as a Privacy Code or Quiet Code. The actual name of the feature may vary.) This feature encodes a low-frequency signal on your radio transmission. This signal is below the range of human hearing but can be detected by other radios. When the CTCSS feature is active your radio will ignore any signal that it receives that does not have the proper tone encoded on it.
In order for these radios to communicate, all of the radios need to be on the same channel and have the same CTCSS code programmed or the CTCSS feature must be disabled.
I suspect that CTCSS is activated on one of your radios but not on the other. This would result in the situation you describe.
Also take note that when using different brands / models of radios to communicate with one another that the CTCSS code numbering scheme may not necessarily be the same from radio to radio. For instance, CTCSS code 4 on the Motorola TalkAbout series actually corresponds to code A on the Motorola Sport models.
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Posted on Apr 07, 2008
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Posted on Jan 02, 2017
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