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Anonymous Posted on Dec 26, 2010

I got a Cobra cxt275 for Christmas and i can't get the maximum range i can't get 4 miles with it is there a way to change it that i can get 20 miles like it says in the owners manual

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  • Posted on Jan 14, 2011
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Yes you can. If youre using it on certain channels (using the FRS frequencies) you will only get about 4 miles. FRS stands for "Family Radio Service". If you use the GMRS frequencies it will broadcast at higher watts (verses lower watts on FRS). GMRS stands for "General Mobile Radio Service" which you need a license to broadcast over. frequencies for both can be found here: http://gmrsfrequencies.com/gmrs-frequencies-chart.html

However to go on the channels that use GMRS you need a FCC call sign or ID license. you must call out your ID number every 15 minutes to be allowed to broadcast any sort of transmission or you can be fined or jailed (so they say). People sometimes dont obey those rules and the FCC will sometimes geo locate your transmissions and pin point your exact location. A 1st offense can be light to severe depending on what you're doing (pirating radio, blabbing, misusing the channels, using it without a license, using too many call tones, abuse, etc.)
Im guessing you might not understand this in the first place. when you buy radio walkie talkies, they all say inside the manual that you need a FCC license to operate it on GMRS mode, IF its GMRS compatible which today most walkie talkies are. a set of channels is designated for GMRS use and regular use of a walkie talkie has a set of channels it uses for your goofing around or just experimenting.
hope this helps.
-jacob ray

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Facts about Cb radio.

a Cb(Citizens Band) radio usually only broadcast on frequencies 26.965 to 27.405 megahertz. It is for mostly short range use 3 to 20 miles range. It comes with legal power of 4 watts. Ranges average about 5 miles. Don't expect big results off this little low-power Am transmitter. A basic 40 channel radio, Microphone, and "Magnet Mount" antenna plus 12 volt Dc 5A power supply will suffice. Place the Magnet mount on a metal file cabinet inside your house. hook up the Radio Shack 12 volt 3-5 Amp power supply to your 40 channel radio, Say Uniden pro510xl or Cobra 19 plus mini compact about $39 for these types. A $20 Radio Shack magnet mount. Turn on radio an talk. If you live in the city near lots of friends who have one too. You can talk on a private channel like Ch#40 and talk all night. The waves get quieter at night and extend farther into the Ionesphere;conditions are favorable 8pm to 12am. You should talk loudly within 5-7 miles easy. I like friends nearby; who live within 3 miles of me. Don't expect Long Distance with these radios. Unless you buy a big 1000 Watt Rf Linear an Tower 100 ft. with big Antennas costing $10,000. But remember the FCC will knock on your door and may give you 5 years $10,000 fines for anything of Linear amps 1000Watts. Just stick with basic tune and adjust,power mics(Cobra sells best). Talk with friends about fishing,hunting,gardens,tools,cars,women etc. Have Fun!!!
on Apr 02, 2011 • Cobra 29 LTD CB Radio
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Why doesn't my cobra walkie talkie won't work after 2 mile

If you are referring to FRS or GMRS type radios, 2 miles is just about the maximum distance you will get out of them on normal terrain. Many of these types of radios will advertise claims of 10-15 or more miles of coverage. This type of "theoretical" mileage rarely if ever occurs in typical conditions. Many factors such as trees, buildings, hills and other "line of sight" obstructions will greatly reduce the effective range.
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I have the cobra CXT275 they have been on the desktop charger for 5 days. They won't charge over a 1/4 of the way how do I get the maximum charge?

Just went to their site and this is what it said:

This may simply be a matter of misinterpreting the low-battery indicator. We use two different types of battery indicators:
  1. Battery Level Indicator: This battery indicator is always visible, and has several segments. When all the segments are lit, the batteries are full. When only the last segment is lit, the batteries are almost exhausted.
  2. Low Battery Indicator: This type is usually NOT visible. It only appears when the batteries are low, at which time it flashes on the display to warn you of a low battery condition.
Please note that when you turn on your radio it first performs a display test. Everything on the display will light up for a few seconds, including the Low Battery Indicator. This does not mean that the batteries are low. After a few seconds the display test will end, at which time the Low Battery Indicator should go away.
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I am looking for an owners manual for the Cobra CXT275 Two-Way radio model.

i just bought a cobra cxt275 walkie talkie i want to know what channel to set it on to get the best distance without breakin the law
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Cobra PR 260

Dear sir,
Try to operate in channel 1~7 , keep the maximum range extender button pressed for 5 seconds u will hear 2 beeps sounds. If it works Ok or else u need to change your Radio antennae
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I cant get the range mine has specified it says i think 12 miles but i cant get it to go over 1 mile

Hello stumpy24586,

The range that you can expect to see when using two-way radios is very dependent on local conditions. These radios use UHF frequencies, which are very line-of-sight dependent. Obstructions like mountains, hills, tall buildings, thick vegetation (like forests), 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.

The Cobra radios in question specify a maximum communications distance of approximately 17 miles. That kind of 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 1-2 miles.

Best Regards,
Agent Ken
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