[Elecraft] KX3: Difficulty performing I.F. image (16 kHz) nulling

[Don Wilhelm]

Mark,

Step 7(a) on page 5 is correct.  Step 14 on page 2 is also correct.
Page 2 refers to having the signal source and the KX3 set to the same 
frequency.
Page 5 requires that the signal source be set 16 kHz lower than the KX3 
signal - you will be tuned to the opposite sideband, so the signal may 
be weak.  Increase the level from the signal source or increase the 
preamp gain.

If you cannot hear the opposite sideband signal, it may already have an 
optimum setting.

73,
Don W3FPR

On 4/26/2014 8:42 AM, Mark Volstad wrote:
> I am attempting to perform the opposite sideband and I.F. image 
> nulling procedure on my KX3, per the app note (rev A8). I had no 
> trouble performing the opposite-sideband nulling steps, but have run 
> into a problem in the I.F. image (16 kHz) nulling procedure on page 5.
>
> Step 7(a) on page 5 states that "you should hear a strong signal". 
> This contradicts step 14 on page 2, which states "Note: If you are 
> preparing to null the RX SHFT=8.0 I.F. image, you may not hear any 
> signal at this time since the VFO is offset from the signal source by 
> 16 kHz". In fact, I am *not* hearing any signal.
>
> Is it safe to assume that step 7(a) on page 5 is incorrect, and that I 
> can safely proceed without hearing any signal?