[Elecraft] K3 + softrock IF

[Joe Subich, W4TV]

 > I looks that the IF stage (freq) is changing while setting the
 > filters.  Is this normal?

Yes.  You will also see a significant change when selecting AM
or the "other" sideband.  This is normal with most radios unless
they use separate filters for USB and LSB.

73,

    ... Joe, W4TV

On 5/24/2010 3:09 PM, Peter wrote:
> Hi
>
> I have a strange event and I like to get some feedback.
> First I have in The K3 4 filters 2,7, 2,1 400 and 200 hz.and I'am using
> 550hz pitch
> Will using spectrogram I don't see the RX tone while moving the filter
> setting from small to wide en reverse.
> So I guest I have done the offset setting correct.
>
> When using a softrock IF, I see a jump on the output
> 200Hz is just fine (no shift)
> 400hz is 180 hz too low
> 2,1Kc is 200 too low
> 2,7Kc is 800 hz too high
>
> I looks that the IF stage (freq) is changing while setting the filters.
> Is this normal?
>
> Peter
> PC2A
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