TM 1-1510-225-10 3B-149 1 Figure 3B-120.  Frequency and Anti-jam Preset Page Access and Usage Table 3B-83.  Frequency and Antijam Preset Page Access and Usage NO. DESCRIPTION/FUNCTION 1 To    access    the    presets    page(s)    and laterally  scroll  to  the  desired  preset  list page. 2 To   access   frequency   preset   page   to define preset. 3 Select to insert into scan list. 4 Select callsign for preset frequency. 5 Select    frequency    and    modulation    for preset. 6 Select   to   tune   to   preset   and   return   to communication page. (c)   Maritime     Channels.      To     use     a maritime channel enter  M  and the channel number.  If the  transmit  frequency  is  to  be  the  coast  frequency associated   with   that   channel   insert   a    C   after   the channel    number.        If    C    is    not    entered,    the    ship frequency will be used as the transmit frequency. To switch radio tuning between ship and coastal frequencies,  enter  an   S  (ship)  or    C  (coast)  into  the CDU scratchpad and press the CHAN line select key. (d)   V/UHF   Scan   Function.      The   FMS- 800/ARC-210  provide  an  ability  to  continuously  scan up   to   four   communication   frequencies   for   incoming signals.  To enable the ARC-210 scan function, access the V/UHF control page and toggle the SCAN mode to ON.      SCAN:   will   replace   the   callsign   field   of   the communication    page    and    the    frequency    field    will display the scan frequency. The radio will progressively   scan   through   each   of   the   four   scan frequencies   entered   on   the   V/UHF   scan   list   page.   When  the  radio  detects  a  signal  on  one  of  the  scan frequencies,   RECV:   will   be   displayed   as   long   as   a signal is detected.  The frequency on which the signal was  detected  will  be  displayed  in  the  frequency  field.   To   lock   onto   that   frequency,   press   the   RECV  line select  key  to  toggle  the  channel  to  LOCKX.    Repeat pressing  this  line  select  key  to  recall  former  locked scan  frequencies.    Up  to  three  scan  frequencies  can be  recalled  as  locked  frequencies.    When  the  oldest locked   frequency   is   displayed,   press   the   same   line select key again to return the radio to scan mode. To    enter    the    frequencies    into    the    scan    list, access   the   preset   pages   from   the   Communication page and laterally scroll to the V/UHF Scan List page.   Refer  to  Figure  3B-121  and  Table  3B-84.    The  first scan frequency is the scan transmit frequency, i.e., the frequency  on  which  the  radio  will  transmit,  if  keyed while   scanning.      Access   the   Scan   Preset   page   by selecting the right line select key corresponding to the scan list item; and, like on the Frequency Preset page, assign  a  frequency  and  callsign  to  the  scan  list  item.   On   the   Frequency   Presets   pages,   transfer   presets from   the   V/UHF   Presets   pages   to   the   scan   list   by accessing  the  V/UHF  Preset  xx  page  of  the  desired preset and press the  SCAN INSR line select key.  The V/UHF  Scan  List  page  will  be  displayed  with  INSERT PRESET AT? in the scratchpad.  Press any of the four left line select keys to insert the frequency preset into the scan list. (e)   V/UHF  Airport  Frequency  Selection.   To  tune  the  radio  to  airport  frequencies  stored  on  the data  cartridge  access  the  V/UHF  Airport  Frequency page.      The   V/UHF   Airport   Frequency   page   maybe accessed from the Communication page by  entering a valid airport identifier and then pressing the line select