> So the factory cannot produce a radio which anybody, anywhere can
> buy and take out of the box and get on the air straight away. The
> owner has to fix it first! . . . . After spending all those thousands
> of Dollars.
No, that's not what I said. If Charlie is using a power supply with
significantly higher (or lower) voltage than used by the Elecraft
factory when the transceiver was built and calibrated, the gain of the
IPA and final amplifier will be different from the value calibrated at
the factory.
In addition, if Charlie is using external ALC (he does not say) and
has the K3's power control set too high, he will see the spike due
to ALC time constants *in the amplifier*.
The issue is in the user's ability to read and follow the manual *not*
in the design or production of the transceiver.
73,
... Joe, W4TV
On 8/16/2012 8:49 AM, Alek Petkovic wrote:
> Ha ha. I've heard it all now.
>
> So the factory cannot produce a radio which anybody, anywhere can buy
> and take out of the box and get on the air straight away. The owner has
> to fix it first! . . . . After spending all those thousands of Dollars.
>
> I rest my case.
>
> 73, Alek. VK6APK
>
>
> On 16/08/2012 8:33 PM, Joe Subich, W4TV wrote:
>>> 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@gmail.com>
>>>> Subject: Re: [Amps] 87a will tell you, too
>>>> To: <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)
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> _______________________________________________
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>>>> Amps@contesting.com
>>>> http://lists.contesting.com/mailman/listinfo/amps
>>>>
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