[Elecraft] Odd power/ALC problem

[Tom W8JI]

I unloaded the firmware by going back to an earlier version.

After seeing it worked "OK" on USB, I deleted the new files 
from the K3 utility, reloaded them in a new folder, and 
installed from that folder. The problem repeats. The problem 
seems to go away if I offset the SSB TX filter by -800 Hz.



----- Original Message ----- 
From: "Don Wilhelm" <don at w3fpr.com>
To: "Tom W8JI" <w8ji at w8ji.com>
Cc: <elecraft at mailman.qth.net>
Sent: Tuesday, March 30, 2010 8:45 AM
Subject: Re: [Elecraft] Odd power/ALC problem


> Tom,
>
> Did you use K3 Utility in Advanced mode and check all the 
> boxes and click the box to load all checked items?  Any 
> other method will not work because the K3 is already 
> loaded with the same level that you are trying to re-load.
>
> I believe the filter offset for LSB/USB is controlled in 
> the DSP code, so that must be force loaded to make any 
> change.
>
> 73,
> Don W3FPR
>
> Tom W8JI wrote:
>> Already deleted the firmware from my computer and 
>> re-downloaded the firmware from the elecraft site fresh. 
>> No help.
>>
>> ----- Original Message ----- From: "Don Wilhelm" 
>> <w3fpr at embarqmail.com>
>> To: "Tom W8JI" <w8ji at w8ji.com>
>> Cc: <elecraft at mailman.qth.net>
>> Sent: Monday, March 29, 2010 10:43 PM
>> Subject: Re: [Elecraft] Odd power/ALC problem
>>
>>
>>> Tom,
>>>
>>> I certainly don't know what is going on with your 
>>> problem, but since no one else has mentioned anything 
>>> like that and teh current firmware has been out for a 
>>> while, I would guess that you have a corrupt firmware 
>>> download.  I would get a fresh copy from the Elecraft 
>>> website and re-load it.
>>> No promises, but it certainly is worth a try.  If that 
>>> does not fix it, a note th K3support is in order.
>>>
>>> 73,
>>> Don W3FPR
>>>
>>> Tom W8JI wrote:
>>>> I have an odd power and ALC problem.
>>>>
>>>> When I load the latest firmware into my K3, it nearly 
>>>> quits working on USB. The power output is very low with 
>>>> occasional high peaks. LSB remains good.
>>>>
>>>> If I offset the filter -800 Hz, USB starts working OK.
>>>>
>>>> If I make no other changes and go back to the older 
>>>> firmware, the problem goes away.
>>>>
>>>> Any ideas anyone?
>>>>
>>>> Tom
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