Image:Recreational Walkie Talkies.jpg
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Recreational_Walkie_Talkies.jpg (105KB, MIME type: image/jpeg)
This image has been (or is hereby) released into the public domain by its creator, Wtshymanski. This applies worldwide.
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Recreational walkie-talkies.
From the left: two different models of FRS radios by Motorola, purchased in 2002 and 2004. More recent unit also operate on the GMRS channels. Antennas are permanently attached.
Third from the left an early 1980's amateur radio radio for the 2 meter band, complete with external speaker-mike, and DTMF keypad for remote repeater control and phone patch operation.
Fourth from the left a dual band amateur radio WT, that can simultaneously receive in both the 2 meter VHF and 70 cm UHF bands. It also has a DTMF keypad.
Fifth, a smaller amateur WT also suitable for both 2 m and 70 cm. 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.
Sixth, a 1960s vintage toy WT operating in the Citizens' Band; it's 900 mm (36 inch) antenna is partly extended. This unit has a superhetrodyne receiver, and 10 transistors.
Next to that a mid-1980's toy WT 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 sqelch.
Commercial and emergency services WTs may be similar in size to the amateur WTs 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.
The two walkie-talkies on the right use only discrete transistors; all the more recent WTs shown here use microprocessors and integrated circuits for most of their functions.
Picture taken by wtshymanski and released to the public domain. Brand names shown do not constitute an endorsement; many companies make similar equipment.
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- (del) (cur) 04:01, 21 April 2005 . . Wtshymanski (Talk | contribs) . . 640×480 (107,183 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)
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