Filter Choices and
Settings with Rigblaster to Mark V
Problem: WB2AJI wrote: I have installed the 2nd
and 3rd IF crystal 2.0 khz filters from Yaesu, and must admit I
am disappointed.....Between the noise and I guess the shape
factor of these units, it is extremely difficult to copy weak
signals......the interference reduction is not impressive
either.....
Do the Inrad 2.1 filters work better?.....Shall I try to return
the stock 2.0 filters and obtain the Inrad?.....
Solution: Mike, before
returning your 2.0 Yaesu filters, first try setting Menu 8-9 to
the following values:
r-LsbcAr -0.200
t-LsbcAr -0.100
Proc-Lsb -0.100
r-uSbcAr -0.200
t-uSbcAr -0.100
Proc-uSb -0.100
t-A3-cAr -0.100
The carrier offsets for all of these
settings was 0.000. I also noted the poor RX (and TX) audio with
the default settings, but once I changed to the above settings
for my Yaesu 2.0 pair, both RX and TX audio improved
dramatically. I've been using these settings for the past 3
years in numerous SSB contests on 10 meters including setting
the current USA records in CQ WW SSB, ARRL DX SSB and CQ WPX
SSB. The filters you have will work fine once you change the
carrier offsets. I certainly would consider the Inrad 1.8's if I
had it to do over again, but that would cost another $270 and I
frankly doubt I would notice the difference. BTW, the above
carrier offsets will also greatly improve the performance of the
stock 2.4 filters or any Yaesu or Inrad SSB filters for that
matter. Bill W4ZV
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