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Walkie-Talkies,
Two Way Radios
What is a Walkie
Talkie?
A walkie-talkie (more formally
known as a handheld transceiver) is a hand-held, portable, two-way radio
transceiver.
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Its development during the Second World War has been variously
credited to 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:
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A half-duplex
channel (only one radio transmits at a time, though any number can listen)
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A push-to-talk (P.T.T) switch that starts transmission
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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.
Private investigators use walkie-talkies and two way radios
to communicate with other private eyes, usually during a
surveillance mission where two detectives are physically
separated.
Buy Walkie-Talkies / Radios
Following are recommended walkie-talkies and two-way
radios for private investigators.
 Uniden's
GMR3689-2CK waterproof radios are lightweight,
palm-sized radios packing a 36-mile range, 22
channels plus 142 privacy and 143 group codes,
advanced features like direct and group calling with
ID, and all the basics. They're also completely
waterproof, to JIS7 standards, making them the
perfect choice for sporting events, staying in
contact with family and friends, hiking, skiing, or
nearly any activity where communication is vital.
 Motorola
Talkabout MC220 Two-Way Radio Series: One of the
rugged "Value Series" models, the MC220 has a range
of up to 16 miles and is designed specifically for
active families. Combining General Mobile Radio
Service (GMRS) technology with the Motorola
engineering, this radio is ideal for active outdoor
communications. Functional New Design: The Talkabout
MC220 is designed for great looks, as well as solid,
functional, weather-resistant operations. The sleek
rugged housing protects the radio whether it's being
used on the playground, in the neighborhood or at
the mall. Full-Featured Privacy: The Talkabout MC220
has full 22-frequency capacity, with 38 privacy
codes to reduce interruptions. The Motorola QT
functionality allows the radios to be set so they
can communicate with other compatible Motorola
products, adding yet another level of distinction
from the other manufacturers. Accessories for
Operations: This model features an accessory
connector, permitting use of a headset for easy
hands-free operation. Power to Spare: These radios
are sold in pairs - just charge up the built-in NiMH
power source or drop in three AA batteries and
you're ready to start talking.
 The Cobra
CTX425 is a Micro TALK 2-way radio, two pack with up
to a 25 mile range. This unit consists of 22
channels, 121privacy codes (38 CTCSS codes/ 83 DCS
codes) and comes complete with 8 NiMH rechargeable
AAA batteries, and a 2-port desktop charger. This
unit also features hands-free operation (VOX), a 10
channel NOAA radio, a backlit LCD display, a
scanning function (channels/ privacy codes), a
single pin speaker/ microphone/ charge jack, a 10
channel memory, selectable hi/low power in GMRS,
call alert (10 selectable tones), key lock, roger
beep (selectable on/off), key stroke tones
(Selectable on/off) , a battery low indicator,
battery/ power saver mode, signal strength meter,
auto squelch, a maximum range extender, and a belt
clip.
 Garmin
Rino 120 GPS / FRS / GMRS has a voice scrambler and
vibration mode for top-secret calls! The Rino 120
state-of-the-art GPS navigation and 2-way
communications combined, with enough memory to
download detailed mapping for driving, hiking,
hunting, fishing... or just about anything else you
can dream up. It's waterproof, can send
communications up to 2 miles using FRS channels, 5
miles using GMRS channels, and can "beam" your exact
location to another Rino user using "position
reporting." And because the Rino 120 had standard
FRS / GMRS capabilities, you can talk to friends or
family who own conventional FRS / GMRS radios.
There's also a voice scrambler and a vibration mode
for silent calls. Check it out: WAAS-enabled GPS
receiver; 22 communication channels: 1-14 FRS, 15-22
GMRS; 38 sub-audible squelch codes per transmission
channel for privacy; Transmission distance of up to
2 miles using FRS, up to 5 miles with GMRS (using
GMRS frequency in the U.S. requires a FCC license);
External voice activation (VOX); Ergonomic design
for one-handed operation, with call, press-to-talk
(PTT) and page mode buttons on the side, power /
backlighting button on top, and volume and zoom
buttons in front; Unique 5-way cursor for channel
selection and volume adjustment in FRS / GMRS mode,
and quick map planning, entering and selecting
functions in GPS mode; Voice scrambler and vibration
mode for silent calls; Built in base map consisting
of American road and highway detail |
More
Walkie-Talkies, Two Way Radios
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