Folks, I did ask my crystal supplier about the possibility to customize an AT cut crystal for 50.313MHz. The answer is no, not even for an overtone type. It seems that a simple crystal controlled

No. Otherwise it will short the coils. Thanks, Adam 在 2019年5月23日，上午4:57，Jim <KH2SR@...> 写道：

Should jumper wires be installed in place of C20 & C23 after they are removed?

The D4D works great with my LDG Z-817 auto antenna tuner. 73! Jim - KH2SR

Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the crkits@groups.io group. File: D4D kit manual 0523.pdf Uploaded By:Adam Rong

Tim, Thanks, this is something that we can do. Thanks, Adam -- Thanks, Adam Rong

I got the idea from a Youtuber....(TRXBench) and tried it on a cheap Xverter and it seems to work OK. Why not try soldering a PTC resistor to the crystal to help stabilize it? It would be a very cheap

Gang, Follow up on this IMD topic: Two domestic customers reported that D4D won't work with automatic tuner very well. One customer fixed it by switching off power supply of the tuner, the other has

Folks, I have updated PayPal with all the tracking numbers. Orders on May 18 and later will be shipped next Monday. I shipped by post office with tracking, so you can track it on your local post

Greg, It could be challenging due to thermal drift of the crystal. A TCXO is very expensive to customize. However, we can give it a try to build a sample. Thanks, Adam 在

Hi Adam, congrats on fantastic product idea! I checked the archive and did not find the answer so created new topic: did you consider making a 6m version of the D4D TRX? As most of the traffic on

Folks, I just shipped three boxes yesterday to my shipping agent and today they will ship to worldwide. The backlog is not cleared so I will ship some more next Monday. After shipping, I will

Folks, Anyone has access to this page? https://qrpguys.com/poor-boys-40-30-20-1-10w-dsb-ft8-transceiver It seems new but I am curious about the design concept. Thanks, Adam

Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the crkits@groups.io group. File: D4D kit manual.pdf Uploaded By:Adam Rong

Gang, Compared with 2nd and 3rd harmonics, the adjacent channel IMD products are higher. I did try to attenuate the input audio and it will improve but the result was not so satisfying. In this way, I

Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the crkits@groups.io group. File: d4dqgreva.pdf Uploaded By:Adam Rong

Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the crkits@groups.io group. File: d4dpartlist20190519forMP.xls Uploaded By:Adam Rong

Software settings in Chinese. Try Google translation if you cannot fully understand from pictures. https://mp.weixin.qq.com/s/VSHwEVKzNMG2F2GUVkCcCQ Thanks, Adam 在

Folks, Due to an unexpected reason, the show of D4D in Hamvention is cancelled. However, we believe that D4D is a promising product and you are welcome to introduce to your local clubs, forums or

Folks, I have created folders in the files and photos sections. I will update the files