User manual COBRA 21LTDSTML

[. . . ] 21LTDST. MANUAL. REV. QX 9/25/98 10:59 AM Page 1 OPERATING INSTRUCTIONS FOR YOUR 40 CHANNEL CITIZENS BAND 2-WAY MOBILE RADIO Model 21 LTD ST Cobra Electronics Corporation 6500 W. Cortland Street Chicago, IL 60707 PRINTED IN HONG KONG ©COBRAELECTRONICS CORP. 1997 480-221-P-001 21LTDST. MANUAL. REV. QX 9/25/98 10:59 AM Page 3 How To Use Your The CB Story 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 communications service was opened in 1959. [. . . ] 8. Be sure that the power cord, antenna and microphone are connected to the proper connectors before proceeding further. Turn the radio ON by rotating the VOLUME CONTROL clockwise. Set DELTA-TUNE CONTROL to center(click-stop) position. Rotate SQUELCH CONTROL counterclockwise until incoming signal is heard. Set the CHANNEL SELECTOR Switch to the desired channel. Set VOLUME CONTROL to a comfortable listening level. Engage the SoundTracker system by depressing the button labeled ST. Listen to the background noise from the speaker. Turn the SQUELCH CONTROL slowly clockwise until the noise JUST disappears (no signal should be present). The receiver will remain quiet until a signal is actually received. Do not advance the control too far, or some of the weaker signals will not be heard. The revolutionary SoundTracker system allows you to reduce unwanted background noise (static) and increase the signal for better reception. 3 1 2 4 C. Rear Panel 1. PUBLIC ADDRESS: An external 8-ohm 4. 0 watt PA speaker may be connected to the PA Speaker Jack when this unit is used as a public address system. The speaker should be directed away from the microphone to prevent acoustic feed-back. Physical separation or isolation of the microphone and speaker must be employed when operating the PA at high output levels. EXTERNAL SPEAKER: The External Speaker Jack is used for remote receiver monitoring. The external speaker should have 8-ohm impedance and be rated to handle at least 4. 0 watts. When the external speaker is plugged in, the internal speaker is automatically disconnected. ANTENNA CONNECTOR: This SO-239 connector permits connection of the transmission line cable PL-259 connector to the transceiver. This jack permits connection of the DC power to the transceiver. A power cord with polarized plug is supplied with the radio. The polarized plug ensures that the power will always be connected properly. 2. 3. [. . . ] · Provide "local information" to find you destination. · Help law enforcement officers by reporting drunk and reckless drivers. 6. For technical assistance, please call our Automated Help Desk which can assist you by answering the most frequently asked questions about Cobra products. A Consumer Service Representative can be reached through this same number 8:00 am - 8:00 pm, Monday through Friday, CST. Technical assistance is also available on-line in the Frequently Asked Question (FAQ) section at www. cobraelec. com or by e-mail to productinfo@cobraelec. com (773) 889-3087 16 17 21LTDST. MANUAL. REV. QX 9/25/98 10:59 AM Page 21 Warranty and Service Limited Two Year Warranty COBRAELECTRONICS CORPORATION warrants that its COBRAcitizens band (CB) radio, and the component parts thereof, will be free of defects in workmanship and materials for period of two (2) year from the date of first consumer purchase. [. . . ]