[title]
                                  [title]

                  " Being cut off " of digital IF filter

       Point of difference of digital IF filter and analog IF filter

 When being received the signal for the first time with the IC-756PRO, the digital IF filter " it is cut off and " it thinks that which is surprised.
 As for this in the IC-756PRO the DSP of loading, with the former analog filter cannot be actualized the ideal 㦣130;磦#130;磦#131;죦#131;—㦣131;•㦣130;ᠷhich
 Because the 㦣130;#130;#131;젩s actualized, is. In addition, the filter " it is cut off, " for the preeminence contiguity outside filter setting zone
 The signal the 㦣131;㦣131;ƒ㦣130;壦#131;꠩s cut down, but it is cut off too much, but in reason, in especially CW mode whether in the filter edge the?㦣129;㠼br>It is concerning the signal, the former analog machine method of being audible which is different rather is done.

 Concrete, as for the CW signal outside filter setting zone, when the former analog IF filter is made to pass, beat
 Because frequency has gone in the skirt of the filter, it is audible as a CW reception sound, but digital IF filling
 When the tar is made to pass, because beat frequency is outside filter zone, with the transmission of the CW, wide the 㦣129;㠼br>Is the component (just key click and the like) becomes a state where it is audible. This, until recently the analog IF filter of the machine
 It is point of difference of the digital IF filter of the IC-756PRO.

                                                                                                                                      [IF Response Curves]
                                                                    When you rephrase, with the former analog IF filter it comes to the grade of radio wave which is not visible being visible, with the notion that where,
                                                         The radio wave which spread and the radio wave et cetera whose in addition key click is many, it could separate with the machine until recently with the skirt of the filter
                                                                The component, with the IC-756PRO becomes the way which is audible. In addition, with the IC-756PRO, until recently from filter setting width with the machine
                                                                                                           Perhaps to use you can feel the method of setting some spreading, easily.
                                                                                               (Example: Until recently machine with 500Hz in case of errand, with IC-756PRO 600Hz and the like)

 As for the digital IF filter of the IC-756PRO in order to be cut off preeminently, at the time of the DX 㦣131;š㦣131;‡㦣130;㣦#130;磦#131;磦#131;㠡nd running in the contest
 The time and the like, with when you use on the side which receives pile rise, with the setting which makes filter width narrow, zero in doing, call
 It becomes the circumstance that it is only the signal which comes being it is audible. In the DX 㦣131;š㦣131;‡㦣130;㣦#130;磦#131;磦#131;㠡nd the like with in case of going out, densely it is
 Some filter being cut off, it is troubled, until recently like the machine, whether it cannot expand the hem of the filter, the demand this
 Nature in the thing and the eye COM which come out you think.
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 The consultation window " I USE regarding the HF machine (I * use)" with,                                            E mail: I_use@icom.co.jp
 In the shape factor of this kind of IF filter it regards                                                             Phone: 0120-03-3423 (weekday 9:00 - 17:00)
 We have undertaken consultation even in demand and the like. With ease telephone,                                    F A X: 06-6793-3336 (24 hour acceptances)
 At the FAX and the E mail please communicate.                                                                        Mail sending: 547-0004 the Osaka city plain Postcode 1-6-19
                                                                                                                      ICOM corporation I USE person in charge
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