User manual NAVMAN MCB 7270

[. . . ] MCB 7270 Full-Featured Marine CB 27 MHz Radio Operation Manual www. navman. com NAVMAN RF Emissions and Installation Notice: This equipment has passed Australian Type Certification Standards AS4355 and AS4367. It generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try and correct the interference by one or more of the following measures: · reorient or relocate the receiving antenna. [. . . ] The current channel is shown on the screen in big digits. Press + or - repeatedly to step through the available channels one at a time, or hold down to scroll rapidly through the available channels at about 7 channels per second. See Appendix C for channel band frequencies. Press REJ to activate the noise blanker circuit and reduce noise (e. g. from the engine spark plugs or alternator). The screen shows REJ to indicate that the noise blanker circuit is on. This reduces the receiver sensitivity and noise. The screen shows LOC to indicate that Local mode is active. Local mode can be useful in areas of high radio noise; for example, close to cities. Local mode is not recommended for use in open sea conditions. Press LOC again to return to normal sensitivity. Press BAT to display the voltage of the battery supplying the radio in big digits on the screen; e. g. 12. 6V is displayed as 12, then after 1 second, the display changes to . 60. This cycle is repeated twice then the radio returns you to the most recent mode. You can use this only in ALL SCAN mode, if desired, to skip over a channel that is always busy. When the busy channel is displayed on the screen, press SKIP to lock it out. The right hand screen shows the radio receiving on CH 86 in the marine (MB) channel band. 10 NAVMAN MCB 7270 Marine CB 27 MHz Radio Operation Manual CB channel band MB channel band 2. 3. 3 Transmission Screen The screen shows a 4W transmission (Tx) being made on marine (MB) channel band, priority channel 88 (PRI). The signal strength is not shown for transmissions 2. 3. 4 Noise Rejection Selection Screens The left hand screen displays the REJ symbol, indicating that the noise blanker circuit is on and noise reduction is active. The right hand screen does not show REJ, meaning that the noise blanker circuit is off. Noise rejection on Noise Rejection Off 2. 3. 5 Battery Voltage Screens The battery voltage (BAT) is shown in big digits over two screens. In this example, a battery voltage of 12. 60V is displayed. The first screen displays the battery symbol (BAT) and the whole volts (12) reading for one second. After one second the next screen appears, showing BAT and the partial volts (. 60) reading for one second. This cycle is repeated twice. Whole volts Partial volts (note the decimal point) 11 NAVMAN MCB 7270 Marine CB 27 MHz Radio Operation Manual 2. 3. 6 Priority Channel Screens (Australia) The left hand screen shows the radio receiving (Rx) on the marine (MB) channel band priority (PRI) channel 88. [. . . ] #604-842, 2F, 1118-15, Janglim1-Dong, Saha-Gu, Busan, Korea. Ph: +82 51 293 8589 Fax: +82 51 265 8984 e-mail: info@kumhomarine. com web: www. kumhomarine. com Maldives Maizan Electronics Pte. Mobile: +960 78 24 44 Ph: +960 32 32 11 Fax: +960 32 57 07 e-mail: ahmed@maizan. com. mv Singapore and Malaysia, Brunei, Indonesia and Phillipines RIQ PTE Ltd. Blk 3007, 81 Ubi Road 1, #02-440, Singapore 408701. [. . . ]