[Elecraft] K3s Bug or Feature?

[Michael Blake]

Thanks Lyle.  I never even thought to look there :). I have not yet updated any firmware and assumed the manual plus Errata sheet included all of the configuration options that I might need.  Another good learning point for me.

Thank you very much Lyle.

Very73 - Mike - K9JRI







> On Feb 25, 2018, at 3:57 PM, Lyle Johnson <kk7p4dsp at gmail.com> wrote:
> 
> The information is in the firmware real ease notes.
> 
> 73,
> 
> Lyle
> 
> Sent from my iPhone
> 
>> On Feb 25, 2018, at 1:21 PM, Michael Blake <k9jri at mac.com <mailto:k9jri at mac.com>> wrote:
>> 
>> Ken (K6MR) answered my question, it is a feature.  I still can not find this in the K3s’s Owners Manual but Ken was 100% right.
>> 
>> Here is what he had to say
>> 
>> "It’s a feature.  It allows recording of the transmitted audio regardless of the monitor level.  If you open Config -> Lin Out and tap 2, you’ll see t=xxx.  This is the level of the output.  Setting to zero should solve your problem.
>> 
>> Ken K6MR”
>> 
>> Thanks Ken!
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>>> On Feb 25, 2018, at 11:53 AM, Michael Blake <k9jri at mac.com> wrote:
>>> 
>>> On my recently acquired K3s (MCU 05.62, FPF 01.26, DSP1 02.88, DSP2 N?A, DVR N/A), Serial number 11501,  I have notice a USB audio anomaly that I do not understand nor can I find described in the manual.
>>> 
>>> If you monitor the USB audio output port on the attached computer you will hear, or see on the audio display of a scope application, fldigi waterfall or monitor speaker any audio that is being used to modulate the transmitter.  The transmitter can even be in the TEST mode where no actual output occurs.  This “looped back” audio is unaffected by the MON function and does not vary in amplitude with MON set anywhere from 0 to maximum value.
>>> 
>>> It does not matter if the source of the audio is the FP mic, RP mic or Line In audio source.  The audio is looped back to the USB output port at a constant amplitude.
>>> 
>>> This occurs when the LIN OUT configuration option is set to NOR and at any amplitude. Only when the LIN OUT option is set to PHONES is the loopback path broken and the MON function performs as expected with the looped back level changing from OFF (MON = 0) to a varying level as the MON level is increased from 1 to 60.
>>> 
>>> When using either Speakers, Headphones or both all actions are normal and as described in the manual.  It is only when you monitor the USB output toward the attached computer (Mac or Windows) that you become aware of this loopback path.
>>> 
>>> I believe it is a BUG but if it is a feature I would appreciate knowing where it would be beneficial.
>>> 
>>> 
>>> Very73 - Mike - K9JRI
>>> 
>>> 
>>> 
>>> 
>>> 
>>> 
>>> ______________________________________________________________
>>> Elecraft mailing list
>>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>>> Help: http://mailman.qth.net/mmfaq.htm
>>> Post: mailto:Elecraft at mailman.qth.net
>>> 
>>> This list hosted by: http://www.qsl.net
>>> Please help support this email list: http://www.qsl.net/donate.html
>>> Message delivered to k9jri at mac.com
>> 
>> ______________________________________________________________
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:Elecraft at mailman.qth.net
>> 
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>> Message delivered to kk7p4dsp at gmail.com <mailto:kk7p4dsp at gmail.com>