Question about Motorola Talkabout T5720 (7 Channels) 2-Way Radio

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Tranmitting distance Ken The T5720 manual indicated the transmitting distance of the unit is 5 miles. Is it true? and under what condition? regards ku Othman

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Generally speaking a 2-way radio will talk as far as it can see. Height and placement of antenna determines range. So if you were talking from a Mountain to a valley you could talk a great distance. However, in the real world there are obstacles, such as trees, houses, varied terrain. You generally would expect a radio to talk line-of-sight up to two miles. Or 1/4 to 1/2 mile if talking from inside a building to outside. The quote of 5 miles in literature is referencing ideal conditions. (Much like when the new car you are looking at quotes the MPG.)

Posted on Jul 31, 2008

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My cobra walkie talkie doesn't work after 2 miles


You didn't include the model number of the radios, but I suspect you're referring to Family Radio Service (FRS) / General Mobile Radio Service (GMRS) two way hand held radios. The FRS /GMRS types are limited to just 1/2 watt. Base GMRS type radios are limited to 5 watts. FRS is limited to Ch 1 - 14. Ch 15 - 22 are GMRS only, and require an FCC license to transmit. You can read more about FRS on Wikipedia.

Many FRS / GMRS two way radios claim incredible distances on the packaging. I've seen some that claim 15+ miles. Given the low power (.5 watt) that they are limited to transmitting, claims such as those would be under the most optimal of conditions. I can assure you that you or I would never encounter those conditions unless we were in some sort of radio laboratory / testing space designed to obtain these crazy distances. In other words, even in optimum "real world" conditions; these radio should only be expected to work when separated up to only several "unobstructed line of sight" miles (such as across open water of a lake, along a beach, etc. The range of these same radios will be reduced significantly when operated indoors, outside between buildings, where blocked by rocks, trees, metal, etc. The only reason you may have reduced range could be due to a power level selector switch that has been set to reduce the output power of the radio. Other than that, I think you'll find a couple of miles is about all you're gong to get.

Good luck!

Feb 20, 2012 | Cobra Two-Way Radios

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Radius? manual? akkumulator


  • Channels 1-7 transmit these are GMRS and transmit on a slightly higher power. On these channels, in optimal conditions about 15miles. Optimal is out in the open with no obstructions. In a suburban setting with many building you may get 2 miles out of them.
  • On channels 8-11 these are FRS and transmit with slightly less power. In optimal conditions 15 miles and in a suburban setting you may get 1 1/2 mile.

Manualhttp://www.giantintl.com/RadioPDFs/Outdated%20Manuals/T56XX_57XX_User_Manual_E.pdf

Regards, Tony

Apr 25, 2011 | Motorola Talkabout T5720 (7 Channels)...

1 Answer

Where can I buy repair parts for my Motorola T5720 Talkabout radio?


So sorry, parts have never been available for the TalkAbout line of radios (other than TalkAbout Distance & DPS). If you are looking to repair an existing T5720 unit, your best option would be to locate a like-model for parts. eBay can be a good source.

As for replacement batteries and accessories you can use the Motorola TalkAbout Accessory Store.

Best regards.

Mar 20, 2010 | Motorola Talkabout T5720 (7 Channels)...

1 Answer

What distance/range does the t5412 have


The 5 miles claimed by the manufacturer is possible only in a dream. GMRS radios operate in the UHF band, so signals are strictly line-of sight. In other words, if there's a building, a hill, or other solid obstruction between the transmit and receive locations, the signal will bounce off it and communication will not be possible. Trees, vehicles, etc. will also deflect signals and reduce the effective range of the radios, and even weather can effect the range. Unless you're standing at two edges of a lake, with nothing between you but water, I wouldn't expect more than a mile from them under any conditions on the GMRS frequencies. On FRS, or using low power on GMRS, probably 1/2 mile maximum.

Jan 04, 2010 | Motorola T5000 Two Pack 2-Way Radios with...

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Motorola Talkabout T5720 user manual



Hello cataway43,

These type of low power handhelds are good for "line of sight" communications and their range is very dependant on local geography. Over level ground with no obstructions you can expect about a mile of effective communications range, on average. If you are operating in an area with decreased line of site due to obstructions such as tall buildings or heavy vegetation then the range will be decreased; likewise if you are in an area with increased line of site (such as on top of a tall hill or mountain) you can expect increased range.

Best Regards,
Ken
"Go Ahead. Use Us."

Jul 06, 2008 | Motorola Talkabout T5720 (7 Channels)...

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Motorola Talkabout T5720


Hello kenyond,

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.

Best Regards,
Agent Ken
"Go Ahead. Use Us."

Jun 28, 2008 | Motorola Talkabout T5720 (7 Channels)...

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Hox do i get the t5720 to talk to another make of radio? i have son has a set of ucom twintalker4710 ,and i cant find a channel that they both work on. any idears?


Hello oldskolhippy,

The two radios do not appear to be compatible with one another. The Motorola is a Family Radio hybrid manufactured for the USA market and the Twintalker is a PMR446 radio made for consumers in the European Union. The two radios serve roughly the same purpose (short distance, unlicensed communications) but they do not share any channels in common.

I am not sure where you are located, but it is technically a violation of FCC rules to operate the PMR446 radio in the United States. Likewise the FRS radio cannot legally be used within the EU. I'd recommend replacing one of the radios with a more appropriate one.

Best Regards,
Ken
"Go Ahead. Use Us."

Jun 06, 2008 | Motorola Talkabout T5720 (7 Channels)...

1 Answer

Talkabout T5720 Frequencies


Hello Ruaal,

The frequencies in the TalkAbout T5720 are not adjustable. The radio operates on the designated Family Radio Service channels located at 462 and 467 MHz. There is no way to change these channels to be at 463 and 464 MHz.

Best regards,
Ken
Go Ahead. Use Us.

May 14, 2008 | Motorola Talkabout T5720 (7 Channels)...

1 Answer

Unsilence


Hello gc0273,

Make sure that both radios are using the same Interference Eliminator Code. The situation you describe sounds like one radio has a Interfernce Eliminator Code activated and the other radio does not.

To access the Interfence Eliminator Code setting on this radio press and hold the MENU button until the code starts to flash, then use the + or - keys to adjust the setting and press the PTT to save it.

Best Regards

Agent Ken
Go Ahead. Use Us.

Mar 02, 2008 | Motorola Talkabout T5720 (7 Channels)...

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