Hi Colin and others,

There is a delay system with the newer kenwood rigs.  When you use a
head-set, you will notice it.

73 Keith-wa9dro
Keith Reedy
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On Sep 22, 2005, at 9:15 AM, Colin McDonald wrote:

> Kevin:
> On the higher end rigs, the vox can be really taylored and can
> sound pretty
> good.
> On my TS570, i can use vox without the other operator being aware
> of it most
> times...
> that is partially because i speak different when using vox...you
> must talk
> differently, inserting pauses, and speaking perhaps more quickly or
> flowing
> different words together in order to make sure that things dont get
> choppy.
> I think many operators haven't perfected this and so they tend to
> just leave
> a big long pause instead of keeping the vox enabled by speaking.
> I find that when an operator is using vox, they certainly tend to
> leave
> bigger pauses which leads one to sometimes think they are
> done...whereas,
> most guys when they are using a microphone dont pause and even if
> there is
> no back ground  noise, you can generally tell when they are done
> because
> there is a long pause without audio....
> Also, i think with a microphone, operators tend to use over or back
> to you
> more then with VOX...there is some amount of assumtion that when
> using vox,
> the faster more flowing conversation can take place without long
> pauses
> between transmisions...and for some this works, but for many its
> just an
> irritant.
> I have heard stations operating in almost a full duplex mode by
> having the
> vox set just right and knowing the other operator, allowing just
> enough
> pause there to let him get the comments inserted right into the
> other guys
> sentence and still be heard.
> Anyway, as i said, on the 570, the vox is very clean...i almost
> wonder if
> there isn't some sort of circuit which catches the audio coming
> from the
> microphone and then once the radio keys up, sends that audio, a
> time delay
> circuit which helps to prevent that choppy sound that accompanies the
> operator speaking and the radio keying up a milli second later.
> In large live sound applications, delay circuits are used to
> prevent that
> choppy sound of a gait being engaged or to prevent allot of echo
> from the
> delay between mike and the speakers that occurs due to line loss
> and having
> to go through various components.
> A cheaper vox circuit may not have these time delays built in, so
> it doesn't
> compensate for the time it takes the radio to key up after you begin
> speaking.
> 73
> Colin, V A6BKX
>
>