[Elecraft] K3 SSB - Is the 5 pole filter good enough

[Barry N1EU]

Bill raises a good point that I should've mentioned and which catches me up
occasionally.

You have to take the DSP out of the picture by telling the K3 that the
bandwidth of your 2.7Khz filter is wider.  Unless you do that, you'll be
looking at the dsp filter and not the xtal filter, and you'll never see the
full 2.9Khz potential bandwidth.  This is for measurement only - you won't
be able to operate your K3 with the xmit filter set above 2.8Khz.

73,
Barry N1EU


Bill W4ZV wrote:
> 
> 
> Hmmm...I'll have to check mine again.  I set DSP to max Width (to take the
> DSP filter out of the picture),  and used the internal K3 meter
> (AFV/dBV/AGC Off) to measure the -6 dB points from an XG1 source.  I
> believe the internal meter does read AF doesn't it?  Maybe I'm getting an
> average reading including noise from the wide DSP bandwidth and should be
> using a narrow DSP filter after disabling all filters but the 2.7k.  With
> the XG1 at 50 uV I wouldn't expect noise to be distorting the measurement.
> 
> 73,  Bill
> 

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