[Elecraft] [K3] Opposite sideband rejection

[Guy Olinger K2AV]

The bandwidth and offset will need to be set for what they actually
are.  And at the crossover, even what you measured you are down to the
steep part of the curve. Another 200 Hz and you will be way down.

I'd need to check out that "presumably" on transmit with Elecraft.
That word has gotten me in a lot of trouble over my lifetime.

73, Guy.

On Sat, Jan 16, 2010 at 4:42 AM, Julian, G4ILO <julian.g4ilo at gmail.com> wrote:
>
>
>
> Guy, K2AV wrote:
>>
>> I was going to say, all of that being complained about, can be set any
>> way you want.  Try the SHIFT control on the front panel. Set the
>> crossover *anywhere you want it*.  The SHIFT setting is remembered by
>> mode.
>>
>> Being able to hear down there was specifically requested by some who
>> do not share your tastes. In the past the firmware would NOT ALLOW
>> that degree of downward shift.  Now both of you can now set it like
>> you want it.
>>
>
> I thought the original point was that this occurred in the normal position
> of the SHIFT control. When I got an S6 meter reading at zero beat LO CUT was
> showing 0.15 and SHIFT was centered on 1.50 which I believe is what they
> were originally. I also thought the issue was about the amount of unwanted
> sideband response, not specifically about hearing low frequencies.
>
> As you say, one can simply shift the passband or make it narrower if you
> want to. I was just a little surprised to discover that in the normal
> position - which presumably is the same filter setting used for transmit -
> the response is only about 15dB down at the zero beat frequency. But perhaps
> it really isn't that unusual and the OP is mistaken.
>
> -----
> Julian, G4ILO. K2 #392  K3 #222.
> * G4ILO's Shack - http://www.g4ilo.com
> * KComm - http://www.g4ilo.com/kcomm.html
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>
> --
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