[Amps] K3 spike problem

[Bob Henderson]

So who is telling Charles his K3 doesn't suffer overshoot. I don't see
anyone though I see plenty of folks drawing Charles attention to the fact
that their K3s don't exhibit this problem.  I have also seen helpful
references to the K3 manual concerning how to check the set up to avoid
overshoot.  No test equipment required.

I also have 2 x K3 and as it happens an Alpha 87A which has given great
service since I bought it in early 1994.  My Alpha87A doesn't complain when
driven with either of my K3s.

If I were Charles I would refer to the K3 set up instructions.

So far as I am aware, the thing Charles said which has been disputed is
that the K3 generally is known to suffer from overshoot problems.  I am
among those who dispute this statement, although I will acknowledge any
transmitter improperly aligned may suffer from this effect.

Best to read what is actually written rather than that which might have
been.

73 Bob, 5B4AGN

On 16 August 2012 09:16, Alek Petkovic <vk6apk at bigpond.com> wrote:

> Why are you all trying to tell Charles that the K3 has no overshoot when
> he has told you that it does? He has described the exact conditions
> under which it does it and he has stated that the radio is factory
> assembled and therefore, factory tested and aligned. As such, the
> owner/operator should not have to perform further calibration or alignment.
>
> His radio DOES suffer from some form of overshoot, so please don't tell
> him that it doesn't. He knows what he is seeing with his particular
> radio and the cause is not something that he has or has not done. It is
> not his fault. It is a problem that came from the factory. Accept it as
> fact.
>
> 73, Alek
> VK6APK
>
>
>
>
>
> On 16/08/2012 2:41 PM, Robert Mccormack wrote:
> > Hi all,
> >
> > Message: 6
> > Date: Wed, 15 Aug 2012 17:01:26 -0700
> > From: "Jim W7RY" <jimw7ry at gmail.com>
> > Subject: Re: [Amps] 87a will tell you, too
> > To: <amps at contesting.com>
> > Message-ID: <65BE1EFA07494CE1B0CE2D8ED1508E57 at JimsLaptop>
> > Content-Type: text/plain; format=flowed; charset="utf-8";
> >      reply-type=original
> >
> > I can get "over shoot" or a full-power brief spike of RF is the K3.   The
> > rig is set for, say, 40 watts output and on its first key down, voice or
> CW,
> > it jumps to 100 watts for a very brief moment and strangely does not
> repeat
> > this spike as that one
> >   key-down session continues, but repeats again after a
> > longer stand-by period.   This is a common and very well known problem
> with
> > the K3, but not often discussed due to the powerful love people have for
> > their K3 radios.  The factory has acknowledeged it but has also denied
> it..
> > Facts in my shack.
> >
> > Charles Harpole
> >
> > Now I know why I don?t own a K3!  This would be unacceptable!
> >
> > 73
> > Jim W7RY
> >
> > Hi Charles and Jim,
> >
> > Facts in my shack:-
> >
> > I have two K3s in my shack plus two more brought by guest ops at ZM1A
> multi-op contest station from time to time.
> > None of those K3s have ever exhibited the 'overshoot' problem described.
> >
> > Our amps include hb gg and gk, Drake L4B and Tokyo HP 1kw, Icom IC-2KL.
> >
> > Never had any problem with "overshoot".
> >
> > RTFM,
> >   especially pages 49 and 50 in the K3 Owner's manual.
> >
> > We would never consider use of "external ALC" - it's more trouble than
> it's worth
> >
> > Read Joe W4TV's post if you doubt my comments.
> >
> > 73,
> > Ken, ZL1AIH (hosting ZM1A Multi-op in CW contests)
> >
> >
> >
> >
> >
> > _______________________________________________
> > Amps mailing list
> > Amps at contesting.com
> > http://lists.contesting.com/mailman/listinfo/amps
> >
>
> --
> http://www.qrz.com/db/vk6apk
> http://www.qrz.com/db/vk6ap
>
> Family Businesses:
> Petkovic Air & Gas. petkovicag at bigpond.com
> SP Electrical. www.spelectrical.net.au
> Hampers by Hand. www.facebook.com/hampersbyhand
>
>
>
>
>
> =======
> Email scanned by PC Tools - No viruses or spyware found.
> (Email Guard: 9.0.0.2298, Virus/Spyware Database: 6.20400)
> http://www.pctools.com/
> =======
> _______________________________________________
> Amps mailing list
> Amps at contesting.com
> http://lists.contesting.com/mailman/listinfo/amps
>
>