• To anyone looking to acquire commercial radio programming software:

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BNAF

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We have used GTR 8000 repeater and hand-held 5W radios. This repeater is broken and unreadable signal at a new building of seven floors inside all floor's, but teras is a clear (readable) communication. Could you please advise for getting a proper Tx and Rx signal? We have the same second repeater, can we set it up?
 

mastr

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You have not provided enough information to get advice beyond this- call on a qualified radio shop for on site support.
 

mmckenna

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We have used GTR 8000 repeater and hand-held 5W radios. This repeater is broken and unreadable signal at a new building of seven floors inside all floor's, but teras is a clear (readable) communication. Could you please advise for getting a proper Tx and Rx signal? We have the same second repeater, can we set it up?

Simply setting up a new repeater may not fix your problems. You need an experienced technician with the right test equipment to determine where the issue is.
The problem could be in the repeater.
It could be in the duplexer
It could be in the coaxial cable
It could be the antenna
It could be in your portable radios.

You'll spend a lot of time and money blindly replacing parts, and maybe still not fix it. Hiring a local radio shop with the correct tools/test equipment, will determine where the issue is and allow it to be fixed quickly. This isn't the sort of equipment you fix by buying parts on line and guessing.
 

BNAF

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Simply setting up a new repeater may not fix your problems. You need an experienced technician with the right test equipment to determine where the issue is.
The problem could be in the repeater.
It could be in the duplexer
It could be in the coaxial cable
It could be the antenna
It could be in your portable radios.

You'll spend a lot of time and money blindly replacing parts, and maybe still not fix it. Hiring a local radio shop with the correct tools/test equipment, will determine where the issue is and allow it to be fixed quickly. This isn't the sort of equipment you fix by buying parts on line and guessing.
We have made the appropriate tools to test repeater, duplexer, coaxial cable, antenna, deflection and reflection power to get the required standard.
The portable radio works well out of the building, but inside, the connectivity is not good.
 

MTS2000des

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It's not unusual to have in building issues with a repeater on the roof. Your portable can be a in a null right underneath the antenna, combined with several floors of building materials, you have the perfect storm for attenuation. This is why a DAS is an optimum solution for such an install. But again, diagnosing this over the internet is like trying to figure out why "my car won't start" without knowing all the pertinent information and being there in person.
 

12dbsinad

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What size is said building? What frequency band are you running? What kind/type of antenna and how much gain? For building penetration directly below, the more gain the worse it is.
 

ElroyJetson

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Getting full coverage Inside multi-floor buildings can be a huge technical challenge for a radio system.

I used to make regular service calls to a building that was about 9 floors and it had a distributed antenna system with bidirectional amplifiers and very carefully oriented directional antennas, that worked well in conjunction with the UHF repeater system, but the BDA and antenna system cost more than the repeater system and its small fleet of portable radios.
 

rescue161

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Local hospital has a Yagi in the penthouse that is pointing straight down. Coverage inside the hospital is great.
 

hakwye8518

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I'm running a telewave ANT480F2 on the 9th floor roof of a hospital with no coverage issues anywhere in the facility.
 

ramal121

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My trick (when it was applicable) used to be put the repeater on the parking garage. It's much easier to talk into a building that way.

I've had to do that a couple of times. Put the repeater off to the side and then blast the windows with a yagi.
 

ElroyJetson

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I'm in FL. Adding hurricane ratings to the requirements for new buildings makes them a tougher RF challenge, too.

Now add that to a hospital build spec. It's almost enough to make you want to give up on the radio business.

That reminds me of when I spent DAYS chasing my tail over an Icom IDAS digital system we installed in a hospital, and we had good signal strength but we got a certain percentage of dropped calls. My boss was sure it was an interference issue. I had other suspicions.
Because we'd had the same issue with other IDAS systems we'd put in, all according to "The Book".

Some time later it turned out that Kenwood's engineers found the glitch in Icom's firmware in that (first generation idas) series of radios....a single bit error right there in the part of the firmware that decodes the idas codec. :cautious: :poop: :ROFLMAO:

That was exactly what I had suspected. But couldn't prove.

Kenwood radios worked perfecty in the same system. The first gen Icom radios would always drop a few calls every day.

That experience pretty much convinced me that I want no part of radio systems that aren't provided by Motorola or Harris.
The "second tier" manufacturers just don't put the time and effort into comprehensively testing a new digital format before releasing it on unsuspecting dealers who will then unwittingly use their customer's systems for field testing that should have already been done.
 

12dbsinad

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That experience pretty much convinced me that I want no part of radio systems that aren't provided by Motorola or Harris.
The "second tier" manufacturers just don't put the time and effort into comprehensively testing a new digital format before releasing it on unsuspecting dealers who will then unwittingly use their customer's systems for field testing that should have already been done.
There are PLENTY of glitches, I can assure you, with the big boys. Constant firmware updates are a common occurrence, but they may respond quicker than the others because they have the engineering staff here that is available for a rapid fix, but sometimes the "fix" can cause a secondary problem not noticed. Technology advances so quickly that it is nearly impossible for anyone to properly beta test. Try selling 400 APX8000 portables only to have the customer turn them on, last 3 hours, then brick, rendering then useless and all needing to be sent back to Motorola. All because of a FW glitch. And the customers says to you... "But these cost 7400 dollars each!?...come on!"
 
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