[TenTec] CW Tuning with Omni 6 Plus

[Gary Hoffman]

That's right.  A zero beat means that the two tones are identical and so
their vector sum is zero.  Hence no output.  Unless of course one does
something odd with the phase of the two signals.  Is that being done here ?

73 de Gary, AA2IZ


----- Original Message ----- 
From: "James Duffer" <dufferjames at hotmail.com>
To: <tentec at contesting.com>
Sent: Thursday, May 31, 2007 4:37 PM
Subject: Re: [TenTec] CW Tuning with Omni 6 Plus


>
> snip
> >     When the "cw" button is pushed you get a sidetone. While holding
down
> >this button you move your dial until your target's tone is "beating"
> >against your sidetone. When you move the dial enough so that your
sidetone
> >no longer "beats" and the tones are "insync" they become "one". When two
> >tones become "one" the tone gets louder. This is "zero beat". Even having
> >just "beating" is close enough for govt work.
> snip
>
> For many years I have been under the impression that "zero beating" was
the
> method of beating (hetrodyning) of two frequencies bringing their
difference
> down to the audible range and adjusting one to match the frequency of the
> other so that the two tones beat against each other producing "zero" out.
> Thus the term zero beat.  Not a louder tone.
>
> de wd4air
>
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