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walkie-talkie interference

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hello there
i hope you are all staying safe and healthy


actually I hope could find some one help me with dealing with walkie-talkie interference, Here in my country, we need a license to use any RF Frequency band, so if we want to create eight group of users, we need to issue eight different RF frequency licenses for each group so it is very cost, rather than I think to issue license for only two or three RF channels then configure these channels in our all walkie-talkies, then the walkie-talkie always check if there is a free channel among these configured channels in its memory. Can I find this function through any of walkie-talkie models available in market, if yes please suggest me this model, and could you tell me what is the scientific name or commercial name of this function.

thanks
 

Reconrider

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That sounds like the worst to not be able to use walkie talkies.

I would just download a walkie talkie app on your phone, like zello and use that.
 
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thanks for your reply
this app it requires WiFi or cellular data network, anyway I prefer using walkie-talkie for many reasons, will this function available in walkie-talkies?
 

nd5y

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two or three RF channels then configure these channels in our all walkie-talkies, then the walkie-talkie always check if there is a free channel among these configured channels in its memory. Can I find this function through any of walkie-talkie models available in market,
I have never heard of that. Scanning can find an active channel not a free one. As far as I know nobody makes a radio that does anything like that.
 

rescue161

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What country? I would think that there is some service that is license-free. Whether it be for children's toys or CB or otherwise.
 

DeoVindice

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I have never heard of that. Scanning can find an active channel not a free one. As far as I know nobody makes a radio that does anything like that.

Functionally, he's describing a trunked system but the frequency selection/allocation is handled by the infrastructure rather than the subscriber units.
 

bharvey2

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It seems like Motorola's DTR series radios might fit the bill if 900mhz and FHSS and viable options in his location.
 

rescue161

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Yep, that is why I was asking for their location. The DTR/DLR series radios are very cool and can have way more users on the available spectrum without interfering with each other. Just bought a few to mess around with and I'm surprised at the range, given that they are only 1 Watt.
 

Reconrider

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Yep, that is why I was asking for their location. The DTR/DLR series radios are very cool and can have way more users on the available spectrum without interfering with each other. Just bought a few to mess around with and I'm surprised at the range, given that they are only 1 Watt.
What do you get for range? What kind of landscape was your testing ground
 

rescue161

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We used them briefly today and were able to communicate solidly within a one mile radius and they worked great. Mostly wooded (pine trees). I just got them, so I haven't had the opportunity to do any extensive range tests. We tried two DTR700s, two DTR650s and two DLR radios and they all worked great.
 

bharvey2

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I've heard good review about this radios but have never tried them. Many moon ago, the wife and I had a cordless phone that was 900mhz DSS. I could walk a block or two away and still get good reception with the base. It was, by far, the best cordless phone we have had.
 
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