[Elecraft] Power too high in PSK31 / S

[Greg]

Joe,

I have to change the operating tips page.  It was done prior to a major ALC 
change.  I was waiting for another update as Lyle is changing the ALC meter 
feedback.  It will change to 1-bar as the desired setting.  For now, you can 
adjust it for 4 bars.  If you cannot get 4 bars 3 is still OK.

73
Greg



----- Original Message ----- 
From: "Joe Planisky" <jplan at jeffnet.org>
To: <don at w3fpr.com>
Cc: "Elecraft Reflector" <elecraft at mailman.qth.net>
Sent: Saturday, October 04, 2008 4:15 PM
Subject: Re: [Elecraft] Power too high in PSK31 / S


> Now I don't know what to believe.  In Lyle's April 6 post, he says:
>
>> We recommend setting the Mic (or LINE IN) Gain so you get 5 bars of
>> ALC,
>> with possibly the 6th bar occasionally flickering...
>
> Yet, on the "K3 Operating Tips" page of the Elecraft web site, in the
> section about "Setting up your K3 for PSK" it says:
>
>> Use the MIC control to set the drive level so that your output is
>> equal or just below what you dialed in ... You should not see any
>> ALC bars on the K3 display (when set to CMP/ALC).
>
> Rev D1 of the operating manual seems to agree with Lyle in that it says:
>
>> You can use the same procedure outlined for voice modes (pg. 28)
>> except that speech compression should not be used.  [Pg. 28]: adjust
>> MIC for a peak ALC meter indication of about 5-7 bars.
>
> If the operating tip on the web site is wrong, it ought to be
> corrected or removed.
>
> 73
> --
> Joe KB8AP
>
>
> On Oct 4, 2008, at 1:54 PM, Don Wilhelm wrote:
>
>> Richard and all,
>>
>> If you look back to Lyle Johnson's reflector posting of April 6, you
>> will find the following: (plus other good information about setting
>> up data modes.
>>
>> "In this case, the ALC meter display is acting as a "VU Meter" and
>> is being used to help you set the Tx audio path gain correctly.  It
>> is not showing you how much you are over-driving the PA.  This is
>> why you can set it up in Tx test mode, when you are not transmitting
>> any RF at all. "
>>
>> Additional information can be found in Rev D of the K3 user's manual
>> on page 32.
>>
>> 73,
>> Don W3FPR
>>
>>>
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