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Frequency ctcss help please

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asensibaugh87

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Sep 20, 2015
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My company has a license and repeater for a frequency for our entire workplace. My question is we would like to have an additional channel for my department but someone told me if we add an additional channel with a ctcss code for tx and rx we would be able to communicate without interference with our main channel. Is this true without interfering or being in violation of fcc. I am in security and we share one channel with other department making some communications difficult without everone hearing. If you need more info please ask.
 

nd5y

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If somebody told you that you can do that on the same frequency at the same location without interference they are wrong.

You can have two "channels" on the same frequency at the same location with different tones. The two groups of users on each channel will not be able to hear the other group. It will work fine until somebody on each group tries to talk at the same time, then you will have interference. There is no way around that.
 
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asensibaugh87

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The only problem is im told through fcc we cannot get an additional frequency due to limited frequencies available. This info is through our vendor bearcom
 

lmrtek

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Feb 11, 2009
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Yes you can in fact run multiple different tones on the same repeater which can enable several departments to use the same repeater.
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All the radios have to be programmed for busy channel lock out.
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I have several small business repeaters operating just fine this way.
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It all depends on how much talking activity there is on the repeater.
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If idle chit chat is eliminated and you don't have alot of users, it can work fairly well
 

Voyager

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someone told me if we add an additional channel with a ctcss code for tx and rx we would be able to communicate without interference with our main channel. Is this true without interfering or being in violation of fcc.
To avoid interference you need a different frequency. (or convert the entire system to TDMA)

Every frequency must be FCC-licensed.

So, you need to add another frequency to your license then use that. Try to get one in the same band as far away from your existing frequencies as possible.
 
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