[Elecraft] [K3] Opposite sideband rejection

[Wes Stewart]

I'm the OP and I'm never mistaken :-)

This is actually humorous in a strange sort of way.  Someone makes a well-intentioned suggestion for a change that will improve the performance of the radio and the "Elecraft can do no wrong and I'm perfectly happy with mine" contingent leaps to conclusions that it's a "complaint."

I can say without reservation that my (and others') K3 is a *much* better radio now than it was a year ago when I first put it into operation and some of that is due to my "complaints."

I suggest that when someone starts to think "complaint", they replace that thought with, "free engineering."

Wes  N7WS



--- On Sat, 1/16/10, 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.
>