Uniden GMR1235-2 Support Question
Uniden GMR1235-2 Support Question
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Question posted by kathas9lvs on June 21st, 2017
Can Not Talk To Each Other From A Distance
how do you talk to each other from a distance of a mile or more? We can talk if in the same house, but not when we are apart.
Current Answers
Answer #1: Posted by Odin on June 21st, 2017 5:36 PM
Odin
Member since:
April 10th, 2010 Points: 41,236,680
Member since:
April 10th, 2010 Points: 41,236,680
It appears that you're wanting more than your two-way radio can provide. The range of these devices can indeed be quite limited. The following two paragraphs from Wikipedia elaborates:
The useful direct range of a two-way radio system depends on radio propagation conditions, which are a function of frequency, antenna height and characteristics, atmospheric noise, reflection and refraction within the atmosphere, transmitter power and receiver sensitivity, and required signal-to-noise ratio for the chosen modulation method. An engineered two-way radio system will calculate the coverage of any given base station with an estimate of the reliability of the communication at that range. Two-way systems operating in the VHF and UHF bands, where many land mobile systems operate, rely on line-of-sight propagation for the reliable coverage area. The "shadowing" effect of tall buildings may block reception in areas within the line-of-sight range which can be achieved in open countryside free of obstructions. The approximate line-of-sight distance to the radio horizon can be estimated from : horizon in kilometers = 3.569 times the square root of the antenna height in meters.
There are other factors that affect the range of a two-way radio such as weather, exact frequency used, and obstructions.[18]
The useful direct range of a two-way radio system depends on radio propagation conditions, which are a function of frequency, antenna height and characteristics, atmospheric noise, reflection and refraction within the atmosphere, transmitter power and receiver sensitivity, and required signal-to-noise ratio for the chosen modulation method. An engineered two-way radio system will calculate the coverage of any given base station with an estimate of the reliability of the communication at that range. Two-way systems operating in the VHF and UHF bands, where many land mobile systems operate, rely on line-of-sight propagation for the reliable coverage area. The "shadowing" effect of tall buildings may block reception in areas within the line-of-sight range which can be achieved in open countryside free of obstructions. The approximate line-of-sight distance to the radio horizon can be estimated from : horizon in kilometers = 3.569 times the square root of the antenna height in meters.
There are other factors that affect the range of a two-way radio such as weather, exact frequency used, and obstructions.[18]
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Related Uniden GMR1235-2 Manual Pages
English Owners Manual - Page 1
..., radio is displayed.
GMR1235-2
• 15 GMRS / 7 FRS Channels • Long Battery Life • Up to 12-mile Range* • Channel Scan • Channel Monitor • Battery Strength Meter • Call Button • Roger Beep • Keytone on/off
*Range may vary depending on environmental and/or topographical conditions.
1 Antenna 2 PTT (Push-To-Talk...
English Owners Manual - Page 2
... electrical blasting caps. Use a dry, lint-free cloth to prevent accidental transmission when in a blasting area or in areas posted: "Turn off two-way radio."
The design of the radio complies with the FCC guidelines and these requirements may not comply with FCC RF exposure requirements and should include all parts and accessories...
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