FTA-230 OperATing MAnuAl18advanced operatIonTuning MethodsThroughout this manual, you will see references to sev-eral different frequency setting methods. Each will beparticularly useful in a particular operating situation,and they are described below: VFO (Variable Frequency Oscillator)The VFO is a “tuningdial” system which al-lows you to tune throughthe NAV or COM bandsusing the DIAL selector knob, the Keypad, or thescanner. MR (Memory Recall)The MR (Memory Recall)mode of the FTA-230provides the user withthe ability to store andrecall as many as 150 channels in the radio’s mainmemory bank. These memory channels may also belabeled by you with an alpha/numeric name of up to8 characters in length, to aid in quick identificationof the channel. See page 28 for details on creatingalpha/numeric labels. BOOK (Pre-Programmed) MemoriesThe Book memories arepre-programmed, eitherat the factory or by yourDealer (depending onyour country’s requirements), typically includingthe major COM and NAV band station frequen-cies used in your area. The Book memories can bechanged by the user. See page 38 for details. WX (Weather Channel) Memories (USA version only)Ten Weather Channelsare pre-programmed atthe factory. The FTA-230will automatically scanthis special bank when it is selected by the user.