[Elecraft] Elecraft Digest, Vol 202, Issue 2

[Bob McGraw]

  I suggest you use the K3 Utility and a known good 50 ohm load and 
perform the  complete TX Gain Calibration.   Connect the radio to the 50 
ohm load with a short,  single jumper of known good quality.  There 
should be no switches, amps, power meters or such in the line between 
the radio and the load.

Also when powering down the station, be sure to turn the radio off first 
before turning off the power supply.   There is a power down imminent 
circuit that saves data and then shuts down the radio.   If you kill the 
supply first, well that circuit won't do its job.

73

Bob, K4TAX


On 2/3/2021 12:14 PM, elecraft-request at mailman.qth.net wrote:
> Message: 1
> Date: Mon, 1 Feb 2021 11:49:17 -0700
> From: Wes<wes_n7ws at triconet.org>
> To:elecraft at mailman.qth.net
> Subject: Re: [Elecraft] K3S Power Creep
> Message-ID:<c2acf231-c22d-28f2-a154-69fa2bcaa48c at triconet.org>
> Content-Type: text/plain; charset=utf-8; format=flowed
>
> Does it happen on more than one band?
>
> Wes? N7WS
>
> On 2/1/2021 11:17 AM, Rich wrote:
>> I am experiencing the Power Creep issue on my K3S.?? This radio was just
>> returned from Elecraft repair in June of 2020.? At that time I had the issue
>> with distorted audio above ~12 watts.
>>
>> I have read prior info regarding the power creep issue.? It is not related to
>> audio level as Don mentioned.? I did not do a new calibration as it was done
>> at Elecraft just 6 months ago.
>>
>> The only way to get the full power at any setting (20, 50, 100 and so on) is
>> to put the radio in RTTY FSK and key up about 5 to 10 times.?? If I turn the
>> radio off.?? The issue comes back.
>>
>> Is there any new information on the cause of this issue?
>>
>> It is very frustrating to have a radio that cannot drive my amp or put out
>> proper power without all of these steps to manipulate the power.
>>
>> Rich
>>
>> K3RWN


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