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GMRS / FRS - Discussions related to GMRS (General Mobile Radio Service) and FRS (Family Radio Service) communications

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  #21 (permalink)  
Old 01-25-2018, 4:18 PM
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That's easy for some of us because we understand all the things that get in the way but the neophyte that goes to Walmart and buys a pair of radios that have a "25 mile range" has trouble with it. That guy figures everything will be fine because his mama only lives 5 miles away, the radio is good for 25 miles, so "I'm good to go." The fact of the matter is he might be lucky to get 5 blocks.
…and:
-that if 2 watts will get you "25 miles", 4 watts must get you 50 miles.
-antennas are not important
-advertising always tells the truth.
-the internet said so.
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Old 01-25-2018, 7:48 PM
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I think I remember reading in the old Monitoring Times Magazine that someone took their FRS radios into a mountainous region and easily talked to another person on another "mountain" well over the basic range of a mile or two. I do not remember the range but I believe it may have been10 miles, if not more.

Not 100%, my mind is a little foggy.
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Old 01-25-2018, 7:57 PM
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I think I remember reading in the old Monitoring Times Magazine that someone took their FRS radios into a mountainous region and easily talked to another person on another "mountain" well over the basic range of a mile or two. I do not remember the range but I believe it may have been10 miles, if not more.

Not 100%, my mind is a little foggy.
That's entirely possible. Line-of-sight (and especially with nothing in between) makes that a real possibility. That's virtually impossible in an urban situation and highly unlikely in most areas (except for those two mountains).

The earlier mention of Voyager I is a great example. 12 billion miles, line-of-sight. I think the only drawback for that is the 17 hours it takes the signal to get to earth.
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Old 01-25-2018, 8:57 PM
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I think I remember reading in the old Monitoring Times Magazine that someone took their FRS radios into a mountainous region and easily talked to another person on another "mountain" well over the basic range of a mile or two. I do not remember the range but I believe it may have been10 miles, if not more.

Not 100%, my mind is a little foggy.
Don't ask me to provide a link, this was probably 15 years ago.
There was an article where someone did, essentially, that. I believe it was 97 miles.

In reality, the limiting factor isn't the power output of the radio. It's the poor receivers and awful antennas. 1/2 a watt can go a long way if you have good equipment.
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