[Icom] Using narrow filters in AFSK in 706MKIIG

[WA9ALS - John]

I have an FL-232 350 Hz filter that I use in my 706MKIIG for RTTY mode.  Now
I'd like to use it in USB mode for PSK occasionally.  I read somewhere how
to "fake out" the 706 so that I can use my FL-232 in SSB mode.  I was going
to ask exactly how to do that here, but I figured it out.  I decided to make
the post anyway in case it helps someone else.

In the setup options (powerup while depressing the LOCK button), Option #9
is the filter selection - Tell it you have the SSB narrow filter FL-223 (1.9
KHz).  This will let you then select the "narrow" filter when in SSB mode.
Since the only filter really installed is the FL-232, it finds that and you
get the narrower 350 Hz bandwidth.

73 - John, WA9ALS