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Cobra_21ltd St Cb Tranciever_manual

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    Page 1 OPERATING INSTRUCTIONS FOR YOUR 40 CHANNEL CITIZENS BAND 2-WAYMOBILE RADIO Model21 LTD STCobra Electronics Corporation 6500 W. Cortland Street Chicago, IL 60707 PRINTED IN HONG KONG©COBRAELECTRONICS CORP. 1997480-221-P-00121LTDST.MANUAL.REV.QX 9/25/98 10:59 AM Page 1
    Page 2 The Citizens Band lies between the shortwave broadcast and 10-meter Amateur radio bands, and was established by law in 1949. The Class D two-way commu- nications service was opened in 1959. (CB also includes a Class Acitizens band and Class C remote control frequencies.) FCC regulations permit only “transmissions” (one party to another) rather than “broadcasts” (to a wide audience). Thus, advertising is not allowed on CB Channels because that is “broadcasting.” “Cuts Static coming in, adds Punch going...
    Page 3 Specifications (cont.) GENERAL Channels40 Frequency Range26.965 to 27.405 MHz. Frequency ControlPhase Lock Loop (PLL) synthesizer. Frequency Tolerance0.005%. Operating Temperature Range-30° C to + 50° C. MicrophonePlug-in dynamic. Input Voltage13.8VDC nom.(positive or negative ground). Current DrainTransmit:AM full mod., 1.5A(maximum) Receive: Squelched, 0.3A; full audio output, 1.2A (nominal). Size53 / 4” W x 1 3 / 4” H x 7 1 / 2” D . Weight1.2 lbs. Antenna ConnectorUHF, SO-239. Semiconductors26...
    Page 4 5Installation (Cont.) 3.Connect the antenna cable plug to the standard receptacle on the unit. Most CB antennas are terminated with a type PL-259 plug which mates with the receptacle marked ANT. 4.Connect the red lead of DC power cord to +13.8 VDC. In automobile instal- lations, +13.8 VDC is usually obtained from the accessory contact in the fuse box. This prevents the set being left on accidentally and also permits oper- ating the unit without the vehicles engine running. Before installing the CB radio,...
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