Re: Merry X'mas and Happy New Year
Happy Christmas and New Year to you and your family Adam. Santa just left NZ so he will be with you shortly.. ?
Nigel de ZL1NAY?
On Sun, 24 Dec 2023, 10:22 pm Adam Rong, < rongxh@...> wrote: Guys,
Merry X'mas and Happy New Year 2024! I hope you all have great time with
your family and friends.
In 2023, we have announced ADX-S, CPK-1 Pixie2023, CPK-2 DC40 and CPK-3
KT. I have enjoyed? designing and producing these kits. Hope you enjoy them.
Thanks,
Adam
Owner of CRKits.COM
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Re: Merry X'mas and Happy New Year
Thank You Very Much Adam ! Merry Christmas to You and Your Family and I hope you have a Great New Year. You had a very productive 2023 and I'm sure 2024 will be even better. I'm looking forward to seeing your 2024 offerings. Jim WB4ILP?
On Sun, Dec 24, 2023, 4:22 AM Adam Rong < rongxh@...> wrote: Guys,
Merry X'mas and Happy New Year 2024! I hope you all have great time with
your family and friends.
In 2023, we have announced ADX-S, CPK-1 Pixie2023, CPK-2 DC40 and CPK-3
KT. I have enjoyed? designing and producing these kits. Hope you enjoy them.
Thanks,
Adam
Owner of CRKits.COM
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Merry X'mas and Happy New Year
Guys,
Merry X'mas and Happy New Year 2024! I hope you all have great time with your family and friends.
In 2023, we have announced ADX-S, CPK-1 Pixie2023, CPK-2 DC40 and CPK-3 KT. I have enjoyed? designing and producing these kits. Hope you enjoy them.
Thanks,
Adam
Owner of CRKits.COM
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Re: Troubleshooting ADX-S Receiver Noise
Mark,
Try to shut down your monitor for a while and check the waterfall.
Are your audio cables original length of about 0.5 meter?
Sometimes if you mix these two cables, you will see no signal but lots of lines.
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在 2023年12月20日，10:23，Mark Friedman <deepskytraveler@...> 写道：
?I'm using my ADX-S with a DigiRig and WSJT-X running on both Armbian OS and MacOS machines. I have successfully completed FT8 QSOs and have been spotted transmitting WSPR. However in all modes I'm encountering what appears to be persistent harmonic noise across the spectrum. I've done everything possible to eliminate possible noise sources in the shack by shutting down and disconnecting as much equipment as possible when testing with the ADX-S. When using my other transceivers (FT-817ND and the IC-7300) I have no indications of any spurious noise injection or RFI infiltration. My sense is this noise is being generated by the ADX-S circuit, perhaps by a bad connection or an incorrect component value. I have attached several screen photos that show these noise harmonics in the waterfall display.? I would appreciate your insight and suggestions on how to proceed with troubleshooting. Thanks. 73, Mark WB8BCU
  
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Troubleshooting ADX-S Receiver Noise
I'm using my ADX-S with a DigiRig and WSJT-X running on both Armbian OS and MacOS machines. I have successfully completed FT8 QSOs and have been spotted transmitting WSPR. However in all modes I'm encountering what appears to be persistent harmonic noise across the spectrum. I've done everything possible to eliminate possible noise sources in the shack by shutting down and disconnecting as much equipment as possible when testing with the ADX-S. When using my other transceivers (FT-817ND and the IC-7300) I have no indications of any spurious noise injection or RFI infiltration. My sense is this noise is being generated by the ADX-S circuit, perhaps by a bad connection or an incorrect component value. I have attached several screen photos that show these noise harmonics in the waterfall display.?
I would appreciate your insight and suggestions on how to proceed with troubleshooting. Thanks.
73,
Mark WB8BCU
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Re: KT- CP3 Radio a short test video
A dental floss plastic case will be a good home for the KT receiver.
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在 2023年12月19日，08:28，Adam Rong via groups.io <rongxh@...> 写道：
? Barb,
A long wire of 5 meters will help if it is connected to the whip antenna. Even without the additional length, the whip is doing well here in China as the local SW stations are so strong. 在 2023年12月19日，07:13，wb2cba@... 写道：
? Adam,
I agree on red led instead of ?green led for tuning. I must confess that I didn’t read your build manual and was rushing to finish and test. Didn’t pay much attention which led goes to which and abd ?ended up with this selection!:) Will swap the leds for sure.
?
I don’t have a ham antenna setup at home. I wil try with my endfed half wave field antenna soon for SW this weekend.
I am still blown away with the quality of FM reception of this little radio. Amazing.
--
73
Barb WB2CBA
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Re: KT- CP3 Radio a short test video
Barb,
A long wire of 5 meters will help if it is connected to the whip antenna. Even without the additional length, the whip is doing well here in China as the local SW stations are so strong.
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在 2023年12月19日，07:13，wb2cba@... 写道：
? Adam,
I agree on red led instead of ?green led for tuning. I must confess that I didn’t read your build manual and was rushing to finish and test. Didn’t pay much attention which led goes to which and abd ?ended up with this selection!:) Will swap the leds for sure.
?
I don’t have a ham antenna setup at home. I wil try with my endfed half wave field antenna soon for SW this weekend.
I am still blown away with the quality of FM reception of this little radio. Amazing.
--
73
Barb WB2CBA
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Re: KT- CP3 Radio a short test video
Adam,
I agree on red led instead of ?green led for tuning. I must confess that I didn’t read your build manual and was rushing to finish and test. Didn’t pay much attention which led goes to which and abd ?ended up with this selection!:) Will swap the leds for sure.
?
I don’t have a ham antenna setup at home. I wil try with my endfed half wave field antenna soon for SW this weekend.
I am still blown away with the quality of FM reception of this little radio. Amazing.
--
73
Barb WB2CBA
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Re: KT- CP3 Radio a short test video
Barb,
Thanks for the photos and video. It looks great. One little thing
is that it is better to use the red LED for tuning as it is
brighter.
Try to connect to your ham radio antenna and experience the
amazing performance of SW and MW bands. The short whip is just to
amaze you guys, not a best performer.
Thanks,
Adam
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KT- CP3 Radio a short test video
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Thanks guys for the orders! I have shipped the first batch
earlier today, and more to follow tomorrow. Based on the feedback
from my shipping agency, the post office tracked air parcel is
quite busy so please expect delay of up to two weeks. Appreciate
your patience.
Thanks,
Adam
On 2023/12/17 19:57, Adam Rong via
groups.io wrote:
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Guys,
Based on the very positive feedback from our domestic
customers, I have updated the web store to include CPK-3 KT
Receiver. The unit price for the kit and the mini whip antenna
including tracked air shipping is 14.5 USD. The formal kits are
the same as the beta kits.
The documentations are stored in the File section. Although the
manual is still draft2, it is good enough to support the kit
building. As always, I will update it along the way you test the
beta kits.
/g/crkits/files/KT
Thanks,
Adam
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Guys,
Based on the very positive feedback from our domestic customers,
I have updated the web store to include CPK-3 KT Receiver. The
unit price for the kit and the mini whip antenna including tracked
air shipping is 14.5 USD. The formal kits are the same as the beta
kits.
The documentations are stored in the File section. Although the
manual is still draft2, it is good enough to support the kit
building. As always, I will update it along the way you test the
beta kits.
/g/crkits/files/KT
Thanks,
Adam
|
File /KT/CPK-3 KT Receiver Assembly Manual(draft2).pdf updated
#file-notice
The following files and folders have been updated in the Files area of the [email protected] group.
By: Adam Rong <rongxh@...>
Description:
Updated the draft manual, good for beta testers
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Re: KT Receiver Domestic Report
Thanks for the first report. It looks good.
VAR - band switch by SPAN potentiometer (FM/MW/SW)
FAV - band setting by 5.1k resistor ~ SW 13-14.3MHz
Thanks,
Adam
On 2023/12/17 5:23, JP McGinley wrote:
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? Took me about 30-40 minutes start to finish, including
cleaning flux off of board. Soldered radio IC first. I am still
trying to see what the FAV/VAR pins tune, appears to be maybe SW
12Mhz.?
?Still twisting the dial, receiving local FM broadcasters.
Will try SW broadcasters tonight.?
JP
KA3BWP?
?
Looking forward to the first report from abroad.
?Adam,
? I received mine on 13 Dec. Going to heat the soldering
iron this weekend. Thank you
JP
KA3BWP
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Re: KT Receiver Domestic Report
? Took me about 30-40 minutes start to finish, including cleaning flux off of board. Soldered radio IC first. I am still trying to see what the FAV/VAR pins tune, appears to be maybe SW 12Mhz.?
?Still twisting the dial, receiving local FM broadcasters. Will try SW broadcasters tonight.? JP KA3BWP?
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On Dec 15, 2023, at 8:48 PM, Adam Rong <rongxh@...> wrote:
? Looking forward to the first report from abroad. 在 2023年12月15日，07:42，JP McGinley <j.p.mcg@...> 写道：
?Adam,
? I received mine on 13 Dec. Going to heat the soldering iron this weekend. Thank you
JP
KA3BWP
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Re: KT Receiver Domestic Report
Looking forward to the first report from abroad.
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在 2023年12月15日，07:42，JP McGinley <j.p.mcg@...> 写道：
?Adam,
? I received mine on 13 Dec. Going to heat the soldering iron this weekend. Thank you
JP
KA3BWP
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Re: KT Receiver Domestic Report
Adam,
? I received mine on 13 Dec. Going to heat the soldering iron this weekend. Thank you
JP
KA3BWP
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ADX-S Engineering Change Notice 20231213
Guys,
We have upgraded the shipping firmware from V1.1 to V1.3 so we ask you to add a 3mm red LED to the CAL and GND test pins at least. You can find the LED in the kit in pink plastic bags. If you fail to do so, you will get poor receiver performance.
The adding of LED is part of the RX modifications outlined in the chapter Modifications in the assembly manuals. It is strongly recommended if you can apply all the RX modifications.
Thanks,
Adam
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KT Receiver Domestic Report
Guys,
While you are still waiting for the parcel patiently, about 6
dozens of domestic customers are enjoying this tiny radio now. A
newbie told me in my wechat group that he just bought a soldering
iron and KT is his first soldering project, but it is a total
success. People sent many videos to demo their own KT radio.
I hope you enjoy this radio kit as much as domestic customers do.
Thanks,
Adam
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Re: File /KT/CPK-3 KT Receiver Assembly Manual(draft).pdf uploaded
#file-notice
This blog further explains the schematic:
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在 2023年12月9日，01:31，Wayne Steury <waynesteury@...> 写道：
? Adam, thank you for sending this helpful information about this receiver kit. I assume that R2 can be my band of choice according to what Ohms I have on my Resistor (According to the chart).? Neat!
I am excited to build this and see what it will do. Thank you for giving us this privilege to try the beta version at minimum cost.
Wayne N9EGT? western colorado?
The following files and folders have been uploaded to the Files area of the [email protected] group.
By: Adam Rong <rongxh@...>
Description:
Draft manual, good for beta testers
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Barb WB2CBA
JP McGinley KA3BWP