[Elecraft] How effective is VFO -B (SUB) receiver?

[Mike K2MK]

Hi Vince,

The quality and strength of my main and sub receivers are identical. There
are several ways in which your setup could be amiss. You can align many of
these with macros but lets just look at manual settings for now. I'll assume
that you are using headphones. The first step would be to press A-B twice.
This will duplicate the settings from VFO-A to VFO-B. Next you must make
make sure that your antenna selection and preamp/attenuator settings are
identical. There are several ways to observe this which you should review in
the manual. You also should make sure that the concentric RF gain knobs are
set the same.

There are two settings that will affect the audio level in the left and
right ears. First there is a menu setting that determines if the concentric
audio knobs independently control the amplitude of VFO-A and VFO-B or if
they act to balance the audio between A and B. This is CONFIG:SUB AF.

The other setting is CONFIG:L-MIX-R. This is a little tricky to find in the
configuration menu. It's listed alphabetically under MIX. Using this setting
you can do the simple thing of having VFO A in the left ear and VFO-B in the
right ear or you can have numerous other settings. Perhaps if you were to
choose VFO-A in the left AND right ear and VFO-B only in the right ear your
brain might perceive that VFO-A is louder than VFO B. 

You should also probably make sure that your configuration settings are
correct for your installed filters. This can be done from the K3 Utility.

If all of these items fail to help you should definitely contact tech
support.

73,
Mike K2MK



Vince wrote
> 
> Might some reader who uses (1) K-3, (2) KAT-3, the ATU and (3) the KRX3,
> VFO-B (SUB receiver) tell me how well the second receiver does its job?
> 
> Is the quality and strength of sound from VFO-B comparable to VFO-A when
> operating split?
> 
> What EXACT settings do you use for receiving on ANT 1 via VFO-A and
> transmitting (up two!) using VFO-B for transmitting AND receiving in
> SPLIT...and using the same antenna.  Not using AUX antenna?
> 
> My FT1000d gives me essentially the same audio on the left channel as in
> the right channel in split.
> 
> With my K3 I have very low audio from the SUB VFO-B.
> 
> Am I expecting too much from the K3?  Am I missing something in setting up
> the K3?
> 
> Vince, W1IDL
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