G'day Bob.
On the contrary. Several posters stated or implied that K3s did not
overshoot at all.
A couple of posts blamed Charles for the problem in that he did not do
the proper calibration or alignment procedure.
It is still my belief that Charles should NOT be required to make any of
these adjustments if he bought a factory finished product. That is the
whole issue here and the only point that I was trying to make
Also, it is arguable that any realignment or calibration will not fix
Charles' problem because, from what he has described, the problem is
only evident on initial key up and subsequent keying only after a long
rest period. Perhaps his radio does have a genuine fault.
I don't profess to know jack about the K3 nor have I ever read anything
about its problems, real or perceived. I tried to use one many times
while I was member of a local club but I was just too stupid to even
begin to understand how to operate it.
73 and your call looks familiar. Maybe we've exchanged reports on cw.
I've certainly seen you spotted on the cluster anyway.
Alek. VK6APK
On 16/08/2012 6:21 PM, Bob Henderson wrote:
> 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@bigpond.com
> <mailto:vk6apk@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@gmail.com <mailto:jimw7ry@gmail.com>>
> > Subject: Re: [Amps] 87a will tell you, too
> > To: <amps@contesting.com <mailto:amps@contesting.com>>
> > Message-ID: <65BE1EFA07494CE1B0CE2D8ED1508E57@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@contesting.com <mailto:Amps@contesting.com>
> > http://lists.contesting.com/mailman/listinfo/amps
> >
>
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