martes, 7 de julio de 2009

Long range walkie talkie

A walkie-talkie (more formally known as a handheld transceiver) is a hand-held, portable, two-way radio transceiver. Its development during the Second World War has been variously credited to Canadian Donald L. Hings, radio engineer Alfred J. Gross, and engineering teams at Motorola.
Similar designs were created for other armed forces, and after the war, walkie-talkies spread to public safety and eventually commercial and jobsite work. Major characteristics include a half-duplex channel (only one radio transmits at a time, though any number can listen) and a push-to-talk (P.T.T) switch that starts transmission.
Typical walkie-talkies resemble a telephone handset, possibly slightly larger but still a single unit, with an antenna sticking out of the top. Where a phone's earpiece is only loud enough to be heard by the user, a walkie-talkie's built-in speaker can be heard by the user and those in the user's immediate vicinity. Hand-held transceivers may be used to communicate between each other, or to vehicle-mounted or base stations.

Panasonic KX-TR320 (14 Channels) Two Way Radio

Whether you are paintballing, rock climbing or shopping, the new two-way radios provide communication in the palm of your hand. With a sleek silver finish, the KX-TR320S allows you to communicate. It provides ideal portable communication both indoors and out with no usage, license or registration costs. Private Talk Mode brings extra convenience for use when private communication needs to be ensured. By flipping the microphone down and bringing the sub mic close to your ear, you can enjoy a private conversation. The built in VOX function allows the use of an optional headset, microphone or ear-pad microphone for hands-free conversation, to further expand the range of your activities. The long range capability adds to the fun of group activities whether in the city or countryside. Tough, rubberized trim and grip resist daily wear and tear and help to absorb the impact when accidentally dropped.

Product Details and Features

Product MPN
MPN kx-tr320b
Key Features
GMRS Capability
Without GMRS Capability
Auto Scan Feature
With Auto Scan
Maximum Range
2 Miles
VOX Activation
With Vox Activation
Water Resistant With Water Resistant
LCD Display With LCD Display
Battery Indicator With Battery Indicator
Battery Type 3 x AA
Weight 0.38 lb.
Product ID 27122

Motorola Talkabout® T9500 Two Way Radio

Motorola T9500 Review

FCC ID: K7GT9500

An FCC Issued GMRS license is required to use these radios.

Power Output:
1.03 Watts GMRS
.11 Wats Low/FRS

This radio has a nice attractive package that fits comfortably in the hand. Its design prevents
it from sitting upright, such as standing on a table. This radio has both CTCSS and DCS coded squelch
for interference protection.

Sound Quality. The radio had a nice smooth sounding audio. The compander feature assists
in removing background hiss. Volume levels are not high enough to compensate for extreme
background noise, as you may experience at places such as amusement parks. As these
radios have a compander circuit, hearing radios of other brands may sound a little odd, as they
don't have the same circuitry. For the most part, this isn't too objectionable.

Ease of operation: The menu was easy to navigate and access to functions was simply laid out.
Access to the advanced functions was easy, and rarely required consulting the manual.

Advanced Functions: This series has the QT interference protection. This allows similar radios to
communicate with one another, with added protection against other radios "opening the squelch".
This is used in conjunction with CTCSS/DCS. (NOTE: This is not an encryption or
scrambling system, and does not prevent others from hearing you)

These radios offer NOAA weather reception with a weather alert function.

Advertised Range: up to 26 miles
Tested Ranges:
Car to Car: .75 miles
Car to house: 1 Mile
Person to house: 1 mile
Person to person outdoors: 1.3 miles

Battery Life: The supplied pack indicates loss of power after 4 hours or so. It remains
useable for 8 hours (which is my test standard, typical for most folks) I suggest extra
batteries. I used AA rechargeables which definitely exceeded 8 hours full power.
The supplied chargers ONLY charge the supplied pack and will not charge other
batteries. This is a drawback. Also, the charger is not a "smart" charger. You run the risk of overcharging.

Additional Comments: I found the belt clips to be capable of easy damage. I didn't
break them; but they don't seem very durable. Other than that, I can't complain. I
found these radios of a very good quality, and will enjoy using them.