[Elecraft] K3 Feature Request

Paul Christensen w9ac at arrl.net
Wed Oct 6 06:04:49 EDT 2010


For each voice, polarity only needs to be set once for each mic source.  For 
crystal, ceramic, and dynamic mics, that can usually be accomplished by 
inverting the polarity at the mic element.  Most folks who take AM polarity 
seriously are also using some other intermediate audio processing device 
with balanced input/output terminations.  In that case, inverting polarity 
is as easy as flipping conductors on one balanced audio pair.  For tiny 
electret mics without any additional processing, the problem becomes a bit 
more complex to resolve but then, I don't know of many folks using electrets 
on AM.

If a phase scrambler were part of the K3's DSP, any thought as to how much 
DSP resource utilization is required?

Paul, W9AC.


----- Original Message ----- 
From: "Tim Tucker" <ae6lx at worldwidedx.com>
To: <elecraft at mailman.qth.net>
Sent: Wednesday, October 06, 2010 12:34 AM
Subject: Re: [Elecraft] K3 Feature Request


> Yep, that's exactly what I'm thinking.  You either do it automatically or
> give the user the ability to switch it themselves.  For the UI, it could 
> be
> as simple as an additional option in the EQ settings for AM mode (press 
> and
> hold 1 to Invert Phase, or something like that...).
>
> I think you guys get the idea.  I thought about this because I noticed the
> problem on my own station and was able to correct it with the iPlus box 
> and
> thought it would be SWEET if it was built into the rig.



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