Radio-telephones
Page 78
If you've noticed an error in this article please click here to report it so we can fix it.
A range of front-controlled. completely transistorized. Philips mobile radio-telephones (type CMT) for use in all types of road vehicles and smaller marine craft is being introduced to the UK market by FieldTech Ltd. It is fully GPO type approved for 12.5 khz channel spacing.
The equipment is a selfcontained VHF/UHF FM transmitter/receiver, with its own built-in loudspeaker, housed in a cabinet measuring approxi mately 9in. wide, deep and 9in, long, and weighing less than 71b. The use of silicon transistors and printed circuits has resulted in small overall size, high reliability and low power consumption.
The same cabinet can house the 3, 10 or 20VHF, or the 5/10UHF versions, and provision is made in the basic equipment for selective calling without entailing additional add-on units, All controls—with the exception of the transmit/receive push-button which is on the hand microphone are mounted on the front panel of the cabinet, including a selector switch for up to 12 communication channels. If required the transmitter and receiver can be supplied as separate units for remote location.
A transportable version is also available, powered by integral accumulator cells which are automatically recharged from vehicle's main batteries when the set is replaced in the mounting tray. A desk-top version is also in the range.
Base stations, operated from ac. mains, are available in the same power ratings and in the same small physical size as the mobile units. Extended or remote control can be incorporated for use with GPO or other land lines. Marketed by: FieldTech Ltd. London Airport, Hounslow, Middx.