that could work yep.
I think the straight key jack is a regular phone jack, meaning it has just
the tip and sleeve connections.
If a person were to replace that jack with a TRS jack, with the extra ring
connection, you could easily use the sleeve and ring for the tone oscelater
and allow the sleeve and tip to remain the CW key circuit.
I think the use of a diode in either the tone oscelater circuit or the cw
key circuit to prevent any ground loops might be wize as well.
Though i'm not sure how that would work.
73
Colin, V A6BKX
----- Original Message ----- 
From: "Shaun Oliver" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Tuesday, March 18, 2008 8:03 AM
Subject: Re: tone osilator.


> perhaps without drilling holes in teh rig one could modify the morse key
> jack to provide power for such a device?
>
>
> On 19/03/2008 12:37 AM, the old scribe known as Martin McCormick was
> able to impart this pearl of wisdom:
> > One thing I saw on an old Heath Kit Warier linear which
> > had been outfitted with an audio tuning device was a
> > quarter-inch stereo headphone jack on the rear of the chassis.
> > Somebody had run coax designed for balanced audio service from
> > the stereo jack to the two contacts of the meter on the front
> > pannel.
> >
> > This would be a good way to do the modification.
> >
> > Balanced-line audio coax has 3 conductors. There is the
> > shield plus two center wires instead of 1. One would want to
> > route it so that it is as far away from the high-power RF
> > circuitry as possible so one doesn't induce RFI in to the
> > tone oscillator or the meter, itself.
> >
> > It is likely that both sides of the meter are above
> > ground, hince the balanced coax.
> >
> > Of course two runs of regular coax would also work.
> >
> > Martin McCormick WB5AGZ  Stillwater, OK
> > Systems Engineer
> > OSU Information Technology Department Network Operations Group
> > Walt Sebastian writes:
> >> Hi Shaun,
> >> It seems to me, back in the olden days when I had a Kenwood TS520, I
could
> >> go about 50 to 60 KHz before I  tuned up.  I am sure other people tuned
up
> >> sooner than that.
> >>
> >> Walt
> >> WA4QXT
> >> New London CT
> >> [log in to unmask]
> >>
> >
> >
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