[Amps] K3 spike problem

[Joe Subich, W4TV]

> It is not his fault. It is a problem that came from the factory.
> Accept it as fact.

Bull roar!  The problem is that he is not operating the radio under
the same conditions as it was when calibrated at the factory and he
has not performed the TX Gain alignment procedure *as documented*
*in the K3 Owner's Manual*.

Charlie is slandering the radio for a design problem that does not
exist simply because he can not read and follow the Owner's Manual.

There is *nothing "factual"* about his report.

73,

    ... Joe, W4TV


On 8/16/2012 5:16 AM, Alek Petkovic 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)
>>
>>
>>
>>
>>
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>