Re: Elecraft Digest, Vol 202, Issue 2

[Bob McGraw - K4TAX]

  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, [hidden email] wrote:

> Message: 1
> Date: Mon, 1 Feb 2021 11:49:17 -0700
> From: Wes<[hidden email]>
> To:[hidden email]
> Subject: Re: [Elecraft] K3S Power Creep
> Message-ID:<[hidden email]>
> 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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[Bob McGraw - K4TAX]

It remembers mode per band as last used.

Now, if you turn the radio off by switching off the power supply first,
it likely won't remember the last mode.   There is a power down imminent
circuit that saves the data when one powers down the radio by the front
panel switch.   If one shuts the power supply off, the PDI circuit does
not save the last used data.    Notice when one presses the POWER switch
the radio does not go off immediately?  This is the PDI doing its job.

73

Bob, K4TAX

On 2/3/2021 12:14 PM, [hidden email] wrote:

> Message: 12
> Date: Wed, 3 Feb 2021 13:59:07 +0000
> From: "David F. Reed"<[hidden email]>
> To: Elecraft Reflector<[hidden email]>
> Subject: [Elecraft] K3 does not change mode properly with band change
> Message-ID:<[hidden email]>
> Content-Type: text/plain; charset=utf-8; format=flowed
>
> Being an intermittent problem, it is hard for me to figure out but I am
> hoping some of you have seen and solved this...
>
> Let's say I am on 40, LSB; sometimes when I change bands to 20M, it
> stays in LSB; sometimes it correctly changes to USB.
>
> Any ideas what is going on or how to fix it?
>
> Thanks & 73 de Dave, W5SV

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