[Elecraft] K3 Audio routing question
The Smiths
notforchat at hotmail.com
Mon Jul 5 22:46:33 EDT 2010
When I have phase shifting between the two antennas I don't have Phase shifting in my audio Left and right. In that I mean, if I look at the voltage on the o'scope I do not see the signal coming out of my head phones phasing from positive voltage to a negative voltage in the inverse between the two headphone outputs (L/R).
Unlike AC where when one side swings negative, if you were to add the inverse you would cancel out the entire signal (as you guys keep saying is the case), this is not the case with the diversity reception here at my QTH (and no I don't live in the bermuda triangle). The phase is in the antenna reception.. Not the audio that we listen to. When my vertical is picking up a vertical phased signal it is very possible that my Horizontal antenna is not receiving any signal at all.. Therefore if I have Mix on so that the sub is placed in the Main's headphone I do not cancel out the audio in the both ears. I am simply adding AUDIO, not phase, to one side of my headphone or the other.
There is no "magic audio" or Voltage that is swinging in a negative polarity in my headphones from an antenna that is not receiving an opposite polarity signal. If that were the case than I would just build an automatic audio phase reverser and listen to my horizontal antenna as the signal phased into a vertical polarity. I would never need diversity reception in the first place. I could just flip the phase of the audio input to the receiver when I stopped hearing the signal on my horizontal antenna assuming it was now phased in the vertical field.
If you use Lyle's Utility based Mixer mode for Diversity (IE. Enter the code he gave you here on the reflector) you will hear that it keeps the signal stable as it travels from one antenna to the other. It doesn't cause the audio in both my headsets to cancel itself out. I've used it before (both with Lyle's code, and with another rigs, and mixing boards) and have NEVER had the canceling affect. I would urge you to at least try it and see for yourself before you continue to draw conclusions.
Now, if this defies all principals of electronics and audio, then so be it.. but I can tell you with certainty that mixing the two antenna phases in one headset makes for BOTH signals to be heard at the same time. So once again, I completely disagree with your reasoning not to implement it. Sorry, but we'll just have to agree to disagree..
The code already exists, as you have already seen by the fact that Lyle has already writing it, and given you the knowledge how to turn it on. The only missing key here is Wayne, or Eric's adding it to the Config menu.
Furthermore, there is no need to panic, if you don't want this feature on your rig, simply DON'T TURN IT ON.. This already exists for other modes, and if you haven't already figured out how to turn it on, than you needn't worry about it affecting your diversity mode reception as it already works.
I believe this should conclude this Post as I (the person that started this portion of the discussion) has nothing further to add.... I beg you not to let this drag this subject on for days.. That's NOT what this reflector is about. Thank you.
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