[Elecraft] Free DV (digital voice as reported in QST-Aprilissue)

[Stephen Prior]

It took some finding on the Elecraft site and in the end I had to use the
site's search tool, but the information (and more besides) is at
http://www.elecraft.com/K3/k3_operating_tips.htm

I agree that something so important should be in the main manual.

73 Stephen G4SJP




On 3 April 2013 19:47, Don Wilhelm <w3fpr at embarqmail.com> wrote:

> Well, I 'thought' was in the manual, and it *should* be.
>
> Lyle has explained several times here on the reflector (and he should
> know, he designed it) that the onset of ALC action is at the 5th bar.  The
> bars below that do not indicate ALC action at all.
>
> Due to the way the K3 controls power, if you do not have sufficient audio,
> the K3 will increase power (thinking there is not enough drive) and you
> will find your power drifting upward as you transmit.
>
> So adjust for 4 bars on the ALC meter (that is *no* ALC) so your power
> will be uniform throughout the transmission.  With the K3 you must have
> sufficient audio drive to allow the power controls to work as they should.
> Contrary to the advice given for most transceivers (which do not control
> power in a closed loop), the K3 power will behave strangely if you use that
> advice - which is to set the power for maximum and use the audio drive to
> control the power output.  That just will not work with the K3.
>
> 73,
> Don W3FPR
>
>
> On 4/3/2013 2:25 PM, Richard Fjeld wrote:
>
>> Maybe I need an updated manual??  I do not find that in my manual, else I
>> am overlooking it.  'Data modes' in my manual takes me to page 31.
>>
>> Isn't it better to be on the 'lean' side than the 'strong' side for ALC
>> in data modes?
>>
>> I would like to know more about the K3 'power hunting'.
>>
>> Rich, n0ce
>>
>>    ----- Original Message -----
>>    From: Don Wilhelm
>>    To: elecraft at mailman.qth.net
>>    Sent: Wednesday, April 03, 2013 12:29 PM
>>    Subject: Re: [Elecraft] Free DV (digital voice as reported in
>> QST-Aprilissue)
>>
>>
>>    Since this is just another digital mode, why would you not set the K3
>>    ALC indication as specified for other digital modes.  4 bars on the ALC
>>    meter with the 5th bar flickering.
>>
>>    If you do not do it that way, the K3 will "power hunt" and you will not
>>    have consistent power output.
>>    Bring the audio up as indicated in the digital operation section of the
>>    K3 manual and set the power knob for the desired power output.
>>
>>    73,
>>    Don W3FPR
>>
>>    On 4/3/2013 1:12 PM, Richard Fjeld wrote:
>>    > Keep your ALC low, just barely visible.  Make notes.
>>    >
>>    >
>>
>>
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