ICOM  IC-761    

 WIDER SSB BANDWITH ON THE ICOM IC-761 WITHOUT ANY
 MODIFICATIONS
 When in SSB mode and the filter switch is in the "out
 position", your normal bandwidth is 2.6kHz.  When the filer
 switch is in the "in position", your normal bandwidth is
 2.4kHz.  I have noticed there is a 3rd SSB bandwidth for
 receiving in the SSB mode.  Leave the filter switch in the
 out position and place the IF shift button in the "in
 position" for IF shift, and now the bandwidth is 3 to 3.2kHz
 wide.  When using the filter switch only to select the
 advertised wide and narrow position for SSB bandwidth, you
 receive and transmit at those bandwidths and are using both
 the 9MHz and 455MHz filters; however, when using the above
 method as stated for the wider selectivity, it appears you
 are receiving through the wide ceramic 455MHz filter only,
 and bypassing the 9MHz filter.  So there are three positions,
 not two.
       MODE       9MHZ           455           BANDWIDTH
       SSB        FL-80       CFJ-455K5          2.6
       SSB        FL-80       FJ-44A             2.4
       SSB        By Passed   CFJ-455K5          Approx 3.0