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tk-2170

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k1agh

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Where I work we use tk-2170 handhelds with assigned licensed frequencies. We are in a concrete and steel building what is the best way to boost reception? If i go to another end of the building I come all static or not at all.
 

mmckenna

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Higher gain antenna might help.
User training helps a whole lot: Hold the radio straight up and down, antenna end high.

VHF can be less than ideal in those sorts of locations. UHF might have been a better choice.

A repeater would work, but it's an expensive option.
 

Baker845

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Best option would be 25 watt repeater. It would be easy built repeater out of 2 mobile radios.
 

N2AL

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Where I work we use tk-2170 handhelds with assigned licensed frequencies. We are in a concrete and steel building what is the best way to boost reception? If i go to another end of the building I come all static or not at all.


I would consider using UHF if you are needing to communicate within a concrete/steel building, if at all possible. Also a small UHF repeater may be an option.

VHF does not work well in environments that include concrete/steel buildings, but UHF can work well in that environment. Having a UHF repeater would give you the option to boost communications over greater distances.




Andrew | N4AWL
www.n4awl.com
 

krokus

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Where I work we use tk-2170 handhelds with assigned licensed frequencies. We are in a concrete and steel building what is the best way to boost reception? If i go to another end of the building I come all static or not at all.

Just to clarify, the handheld is not making to the base? Or is the base not reaching the handhelds?

Presuming that handhelds are not reaching, using remote receivers could be an option. (Voting systems are available, so the base only hears one receiver's traffic at a time.)

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k1agh

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We have the training on how to use it and for reason the powers to be wanted vhf as all the other radio systems in place are vhf (public safety). I'm thinking a repeater may help as its all one floor. The thing is the cost. It can be a diy/homebrew as long as its not too expensive.
 

N2AL

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We have the training on how to use it and for reason the powers to be wanted vhf as all the other radio systems in place are vhf (public safety). I'm thinking a repeater may help as its all one floor. The thing is the cost. It can be a diy/homebrew as long as its not too expensive.


You can DIY it if you have some experience with repeaters. Even if you do not, find a knowledgable ham radio operator to help you. For about $500 or so you can buy a repeater, often used, which will get the job done.

I understand the powers at be wanting to keep everything simple aka on VHF. I have been down that road in the past as well.

Let me know if you have any ideas you would like to run by me.




Andrew | N4AWL
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mmckenna

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You can DIY it if you have some experience with repeaters. Even if you do not, find a knowledgable ham radio operator to help you. For about $500 or so you can buy a repeater, often used, which will get the job done.
Andrew | N4AWL
N4AWL | November Four Alpha Whiskey Lima | Amateur Extra

There's more to this than just finding a "knowledgeable ham radio operator".

You'll need to procure an input frequency for your system. That will likely require frequency coordination and applying for the proper licenses. This is best done by someone (or a shop) knowledgeable in how to do this. It isn't difficult, but the frequency coordination process and the necessary FCC forms are usually out of the grasp of most amateurs.
Once you have all that, you can then look into a repeater. You shouldn't need much. A simple analog 5 watt repeater in a good location with decent antennas should cover your building if you handhelds are just on the fringe. You'll need the right equipment and it needs to be properly set up. Getting the duplexers properly tuned is key to the system working correctly. With the right tools, it's an easy task. Someone trying to do it without the right tools or without the right experience is going to create a lot of headaches for everyone involved.

Your radios will need to be programmed with the new repeater set up. Make sure you keep a 'talk around' channel (or set up one of the buttons) to cover things if the repeater stops working.

I think you'll have a difficult time finding all this for $500, even if you go with used equipment.

There are easier/better ways to do this, but since you already have VHF radios, you're stuck.
Icom has a new WiFi two way radio platform that would have been a good option.
UHF would probably have worked better than VHF,
But that horse is out of the barn, too late now.
 
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