This is a file from the Wikimedia Commons

File:Recreational Walkie Talkies.jpg

From Wikipedia, the free encyclopedia
Jump to navigation Jump to search

Recreational_Walkie_Talkies.jpg(640 × 480 pixels, file size: 105 KB, MIME type: image/jpeg)

Description
English: A collection of walkie-talkies, handheld portable two-way radios for recreational use. From left:
  • Motorola FRS radio, purchased in 2002, which operates on the Family Radio Service band.
  • Motorola dual band walkie-talkie, purchased in 2004, which can operate on either the FRS or the General Mobile Radio Service (GMRS) channels. On both these radios, the antenna is permanently attached, as required by FCC regulations for FRS gear.
  • Early 1980s amateur radio transceiver for the 2 meter (144 MHz) band, complete with external speaker-mike, and DTMF keypad for remote repeater control and phone patch operation.
  • Smaller amateur transciever for the 2 meter (144 MHz) and 70 cm (428 MHz) bands. Although similar in size to the smaller FRS units, it is much more versatile, has a higher transmit power, and can transmit on any of several hundred frequencies in two Amateur radio bands.
  • A 1960s vintage toy walkie-talkie operating in the 27 MHz Citizens' Band; its 900 mm (36 inch)whip antenna is partly extended. This unit has a superheterodyne receiver, and 10 transistors.
  • A mid-1980's toy walkie-talkie operating at very low power in the 49 MHz band, with a Morse code key and the Morse code printed on the case. This unit has only 4 transistors and no volume control or squelch. In addition, rather than the telescoping whip antenna common on earlier models, this unit has a rubber duck antenna, which is thought to be more robust and less dangerous to the user if broken, and has replaced telescoping antennas in virtually all children's two-way radio units.

Commercial and emergency services walkie-talkies may be similar in size to the amateur units shown here, but generally have much better battery life, more rugged construction, and simpler controls, often restricting operation to only one or a few pre-programmed channels. In addition, many have ruggedizing features such as waterproofing (especially for outdoors and marine use) and intrinsically safe design for use in fire-prone industrial environments.

The two older walkie-talkies on the right use only discrete transistors; all the more recent ones shown here use microprocessors and integrated circuits for most of their functions.
Date (original upload date)
Source Transferred from en.wikipedia to Commons by Premeditated Chaos using CommonsHelper.
Author Wtshymanski at English Wikipedia

Licensing

Public domain This work has been released into the public domain by its author, Wtshymanski at English Wikipedia. This applies worldwide.
In some countries this may not be legally possible; if so:
Wtshymanski grants anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law.

Original upload log

The original description page was here. All following user names refer to en.wikipedia.
  • 2005-04-21 04:01 Wtshymanski 640×480× (107183 bytes) {pd} Recreational walkie-talkies. From the left: two different models of [[FRS]] radios by Motorola. Third from the left an early 1980's [[amateur radio]] radio for the [[2 metre]] band, complete with external speaker-mike, and [[DTMF]] keypad for remote

File history

Click on a date/time to view the file as it appeared at that time.

Date/TimeThumbnailDimensionsUserComment
current22:37, 19 January 2012Thumbnail for version as of 22:37, 19 January 2012640 × 480 (105 KB)File Upload Bot (Magnus Manske) {{BotMoveToCommons|en.wikipedia|year={{subst:CURRENTYEAR}}|month={{subst:CURRENTMONTHNAME}}|day={{subst:CURRENTDAY}}}} {{Information |Description={{en|'''Recreational walkie-talkies.''' From the left: two different models of personal two-way radios by
The following pages on the English Wikipedia link to this file (pages on other projects are not listed):

Global file usage

The following other wikis use this file: