John,I have the Sony WH 1000X M2. They are the most comfortable cans ever
for me. Noise cancellation is excellent esp as regards the KPA 1500. I hear
better with them and do so in comfort. Never had the least bit of RF trbl
from 160 to 6.73 Doug EI2CN Age 77 like a kid againSent
Is there a COR protecting the RX IN on a K3S that does not have a KAT3 or a
KRX3 installed? I can't find a definitive answer in the manual or the Nabble
archive. Thanks.
73, Eric WD6DBM

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Too sarcastic? Sorry
Harlan,
Best laugh I’ve had today. Thanks.
73,
Jerry / K0ES
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Post:
I recently purchased a Bose QC-45. I used it for about 5 minutes in a
CWops contest, and got RF in the left headphone. I disconnected it, and
returned to my Bose QC-35's. The QC-45's have been returned to Amazon.
I had a similar problem earlier in the year with the Bose 700
headphones. I
Bill,
What is the level of the MCU (before you changed it), and what level did
you try putting in?
And what is the serial number of your K2? Those may help to solve the
problem.
73,
Don W3FPR
On 11/18/2021 3:55 PM, Bill Coleman wrote:
U6 is kinda expensive to just replace….
I do have an
Matt,
I Forgot to mention that to Bill. The special cable does not have to be
very long, but it must be present. Only pins 2, 3 and 5 should connect
to the RS232 connector on the USB to serial adapter. Failure to follow
this will cause several "strange happenings" with the K2. The subject
Don’t forget, you can’t plug in a USB adapter directly into a K2, as the
wiring is not standard RS232C. You need to make up a special adapter as
described in the manual. Probably you know this already, but just something
else to check.
73, Matt VK2RQ
On Fri, 5 Nov 2021 at 06:31, Bill Coleman
U6 is kinda expensive to just replace….
I do have an older revision of the firmware for U6. I did try before
substituting the KPA100 U4, and it didn’t address the issue.
I guess this will require more sleuthing.
> On Nov 16, 2021, at 12:35 PM, Don Wilhelm wrote:
>
> Bill,
>
> Plug the
For completeness I thought I would copy my original message for the doubters.
"I received an email from a German ham telling me that he's observing the same
thing that I reported a couple of years ago. Specifically an audible "clicking"
sound in both my K3S and KPA500 that coincides with CW
Might have been. Wayne did reply with a possible cause and indicated a possible
firmware fix to be
"put on the list". I never heard further.
Wes N7WS
On 11/17/2021 10:40 PM, Jim Brown wrote:
On 11/17/2021 8:55 PM, Wes wrote:
The K3S does transmit in Test mode. I've seen 50W of output from
Mine NEVER has !
73, Roy K6XK
The K3S does transmit in Test mode. I've seen 50W of output from my
KPA500, while in Test mode.
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Didn't see an answer to the question.
I can confirm that my K3 with USB upgrade does output the CW side tone
audio. This was confirmed by Launching Logger32 and looking at the audio
in the MMTTY RX waterfall display.
A simple test that probably took less time than launching an email.
Interesting. I've checked mine (K3, not 'S') carefully and there is no
measurable output in test mode.
73,
Victor, 4X6GP
Rehovot, Israel
CWops #5
Formerly K2VCO
https://www.qsl.net/k2vco/
On 18/11/2021 6:55, Wes wrote:
The K3S does transmit in Test mode. I've seen 50W of output from my
KPA500,
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