[CQ-Contest] [cwops] WPX CW Signal Quality Concerns

Peter Chamalian w1rm at comcast.net
Sat Jun 6 15:59:44 EDT 2020

I was alerted that my K3S was generating a bit of “crap” that sounded like hot switching the amp.  It turned out that the default TX Delay setting of 008 was a tad too short.  Changing it to 009 resolved the issue.  My amp (the Expert 2K) has hot switching protection.


If you have a K3 or K3S, take a look at the TX DLY setting (press and hold the Menu button to go into config mode then turn the B VFO knob to TX DLY) change it to at least 009 and you should be free from any issues.


If you have a different radio, see if it has an adjustable TX DLY.  If so, do some testing with a local who will give you critical comments and adjust your setting until you are clean.



Pete, W1RM

W1RM at Comcast.net


From: main at cwops.groups.io <main at cwops.groups.io> On Behalf Of donovanf at starpower.net
Sent: Saturday, June 06, 2020 3:29 PM
To: cq-contest at contesting.com; PVRC Reflector <pvrc at mailman.qth.net>
Subject: Re: [cwops] [CQ-Contest] WPX CW Signal Quality Concerns


Hi Tad,


I don't know the specific answer to your question, it depends on the

details of the IC-7610 design. 


The October 2018 QST product review discusses the IC-7610 4 msec

keying rise time and the possibility that the 6 msec menues election

may be a better choice.


In any case, 6 milliseconds should make you a better citizen than 4 msec.







From: "Tad Danley" <tdanley at centurylink.net>
To: donovanf at starpower.net
Cc: cq-contest at contesting.com, "cwops" <cwops at groups.io>
Sent: Saturday, June 6, 2020 7:08:31 PM
Subject: Re: [CQ-Contest] WPX CW Signal Quality Concerns

Frank, my IC-7610 has 6 and 8 millisecond options as well. Is there any disadvantage to using 8 ms?

Best regards,

Tad Danley

----- Original Message -----
From: donovanf at starpower.net
To: cq-contest at contesting.com, cwops <cwops at groups.io>
Sent: Sat, 06 Jun 2020 14:37:56 -0400 (EDT)
Subject: Re: [CQ-Contest] WPX CW Signal Quality Concerns

That's an excellent step forward Bud. There's no excuse for intentional 
key clicks but that's exactly the place where the Japanese manufacturers 
have intentionally put us in 2020. 

The current generation of Japanese transceivers are making key click 
problems much worse than before. Our only hope is that contest 
sponsors improve their rules and enforce them against contesters 
taking advantage of the fast CW rise time menu options in their radios. 

Manufacturers are completely irresponsible with their 4 millisecond 
default CW rise times and egregiously irresponsible with menus 
options that allow users to select 1 and 2 millisecond rise times. 

Kenwood and Yaesu provide completely unacceptable 1 and 2 
millisecond rise time menu options and Icom is almost as bad with 
their 2 millisecond menu option. 

Why are ARRL and the U.S. distributors not communicating with our 
Japanese equipment manufacturers about the problems they're causing 
and enabling? 


----- Original Message -----

From: "cqwpx director" <cqwpx.director at gmail.com> 
To: cq-contest at contesting.com 
Sent: Saturday, June 6, 2020 4:58:15 PM 
Subject: [CQ-Contest] WPX CW Signal Quality Concerns 

I have received two (2) actionable complaints of signal quality issues 
during WPX CW, which are both under review. 

We will investigate additional signal quality concerns. Please provide the 
call to be reviewed, along with the date, time and band of the observed 
signal quality issue. 


Bud Trench, AA3B 

Director, CQ WPX Contest 

web: <https://cqwpx.com> https://cqwpx.com 

email: <mailto:director at cqwpx.com> director at cqwpx.com 

CQ-Contest mailing list 
CQ-Contest at contesting.com 

CQ-Contest mailing list
CQ-Contest at contesting.com




Groups.io Links:

You receive all messages sent to this group. 

View/Reply Online (#39283) <https://cwops.groups.io/g/main/message/39283>  | Reply To Sender <mailto:donovanf at starpower.net?subject=Private:%20Re:%20Re%3A%20%5Bcwops%5D%20%5BCQ-Contest%5D%20WPX%20CW%20Signal%20Quality%20Concerns>  | Reply To Group <mailto:main at cwops.groups.io?subject=Re:%20Re%3A%20%5Bcwops%5D%20%5BCQ-Contest%5D%20WPX%20CW%20Signal%20Quality%20Concerns>  | Mute This Topic <https://groups.io/mt/74718613/417886>  | New Topic <https://cwops.groups.io/g/main/post> 

Your Subscription <https://cwops.groups.io/g/main/editsub/417886>  | Contact Group Owner <mailto:main+owner at cwops.groups.io>  | Unsubscribe <https://cwops.groups.io/g/main/unsub>  [w1rm at comcast.net]


More information about the CQ-Contest mailing list