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Re: Uniden GMR-1035 2-way radion, with advertised 10 mile...
The range estimates are inflated by every manufacturer I am familiar with.
Even with line-of-sight transmission, I have found none that meet the claimed distance under common circumstances.
If you have a friend who is a radio amatuer, you might let him crack the case on one to see if there are any adjustments that could be improved; an 'old dog' would be able to locate the right area in which to look and perhaps tweak something to improve either transmitted power (he should have an instrument that would monitor it for adujstment if not for actual measurement) or improve receiver sensitivity.
The factory is only concerned with function and cost, not performance.
That the Motorola meets its stated range doesn't surprise me; they were long one of the most ethical companies around.
I'm not sure of their honesty today since profit (or even survival) has become more important.
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Have a fully charged good battery. Hold your radio upright, perpendicular to the ground, when transmitting. (Tilting to the side can significantly reduce range.) Wear your radio higher on your body if carrying the radio. Height and placement of antenna has much to do with good range. Talking line-of-sight in perfect conditions a portable radio will get approx. 2 mi., talking in and out of a building you may get 1/4 to 1/2 mi. Obstacles inbetween the two radios will reduce range, so each location may differ. From a mountaintop you may be able to talk many miles into a valley below. Your radio can basically talk as far as the antenna can see.
Advertising on these models is much like reading about a car's MPG, it must be in perfect conditions.
Handheld radios generally will talk "radio-to-radio", "line-of-sight" up to 2 miles. Once you start putting obstacles in between the radios you will shorten your range. Even the body fluid of the person wearing the radio on their hip will absorb some of the range. Talking from inside of a building to outside you might expect 1/4 to 1/2 mile. Good rule of thumb: Height and placement of your antenna determines range. The higher the antenna, the further you can talk. If you are talking from on a mountain top to a valley below you can talk as far as you can see.
Increasing Range: Hold your radio perpendicular to the ground, not slanted like you would hold a phone. This problem alone could decrease your range 2/3s. Face the direction you are wanting to communicate. Don't shout CB-style, shouting reduces talk-range. Lastly, use good batteries. This will ensure your transmit capability.
Take the unit apart and look for any resistors that are bubbled clean any contact points in the unit with contact cleaner or the highest pcnt rubbing alchohol you can find let the unit dry completely (hair Dryer etc() then try if it still fails. One of the components in the unit failed and I would recommend replacing it.
The range that you can expect to see when using two-way radios is very dependent on local conditions. These radios are very line-of-sight dependent. Obstructions like mountains, hills, tall buildings, thick vegetation, and using the radio in a shielded environment such as inside of an automobile can block your line of sight and limit your effective communications range.
That “maximum 5 mile” advertised range is probably only practical in a situation where the user of one of the radios has some significant elevation (such as being on top of a tall hill) and therefore has increased line of sight. When communicating over relatively level ground that is clear of obstructions, you can probably expect a reliable communications range of about a mile.
First,we call this transciever as SRRS (Short Range Radio Service), it can communicate within 500 meters open range or no obstruction,now if the unit can't communicate each other within the range ,i would suggest to sent it to uniden service center......