[Elecraft] KX3 Voice Monitor

[Matt VK2RQ]

Besides "bone conduction", another source of delay may be the DSP processing inside the KX3 itself. This can wreak havoc with your CW side tone for example if you add an aftermarket audio DSP to a radio. Elecraft have obviously taken steps to make sure that the KX3 doesn't have an issue with CW sidetone, but in the case of voice where they are doing audio equalisation for example, they may be using some long FIR filters that introduce a bit of delay. Can't say I've really noticed, because I rarely use the KX3 on fone, and never with monitor on fone.

73, Matt VK2RQ

> On 20 Nov 2014, at 12:37 pm, David DeGeorge <dld at degeorge.org> wrote:
> 
> Not so sure that  I buy the bone conduction theory; I use the same headset with
> my ICOM-7600 and its monitor, same head, same bones :-), but no effect. I tried
> the suggestion to use the DVR and that worked fine, but I like hearing myself
> when transmitting and I can’t do that. It isn’t a very big deal but I am concerned
> that there some sort of RF leakage internal to the KX3 that is being picked up by
> the monitor. According to the portable book the transmit path including the TX equalizer
> are not in the circuit when making a DVR ― page 100.
> David
> 
> WQ2Q
> 
>> There *will* be a delay between the monitor output and the sound your ears hear because of bone conduction.
>> 
>> That is why Lyle suggested using DVR to evaluate (and adjust) your TX audio EQ settings.
>> 
>> 73,
>> Don W3FPR
>> 
>>> On 11/19/2014 5:52 PM, David DeGeorge wrote:
>>> I am a new KX3 user also and have noticed that the monitor seems to
>>> have some sort of effect applied much like the audio effects (which I have turned off).
>>> At first I thought that it might be RF in my headset but it persisted with the RF output
>>> turned to 0 and the rig terminated in a dummy load. It present at any level except 0.
>>> David
>>> WQ2Q
> 
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