[Elecraft] QRQ + and the K4 question

[Wayne Burdick]

> On Dec 6, 2019, at 9:47 AM, K9MA <k9ma at sdellington.us> wrote:
> 
> A related question: Will the latency and turn-around time of the K4 be fast enough for true QSK operation?

Yes. Since the K4's signal processing for CW is primarily in the time domain, it has a distinct advantage over those that batch-process signals using FFTs and IFFTs (frequency domain). 


> The K3 can only hear between words above about 10 wpm, and QRQ mode doesn't help much.

This depends on how the K3 is configured. There are two QSK settings (see CONFIG:CW WGHT menu entry), and with one of them, along with proper adjustment of AGC, it's possible to hear between dots at well over 20 WPM. The new synthesizer (KSYN3A) also improved QSK times.

73,
Wayne
N6KR




> 
> 73,
> Scott K9MA
> 
> 
> On 12/6/2019 09:13, Wayne Burdick wrote:
>> As an SDR, the K4 has no need to shift an oscillator between RX and TX mode. So there’s no need for “QRQ mode.”
>> 
>> Wayne
>> N6KR
>> 
>> ----
>> elecraft.com
>> 
>>> On Dec 6, 2019, at 3:58 AM, Steven G. Steltzer <wf3t at fastmail.com> wrote:
>>> 
>>> Will the K4 do away with the annoyance of the RIT/XIT turning off QRQ+ mode?
>>> 
>>> Thanks,
>>> Steve, WF3T
>>> ______________________________________________________________
>>> 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 n6kr at elecraft.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 k9ma at sdellington.us
> 
> 
> -- 
> Scott  K9MA
> 
> k9ma at sdellington.us
> 
> ______________________________________________________________
> 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 n6kr at elecraft.com