I purchased a SunSDR2DX from a Japanese EDC company some time ago. I applied to the Japanese examination authority using the block diagram diagram in the instruction manual that was included in the package and was able to successfully obtain a license. I would like to spread the word about how to obtain an official license for Sunsdr2DX users in Japan through magazines and other media. So I would like to ask the administrator of EXpert Electronics Co. (EDC is out of business as of 2021/07, so I am unable to contact them. We apologize for the inconvenience, but we would appreciate a reply.)

1. Is it OK to publish this Block Diagram in Japan?
2. This attachment must not be published, but the name of the transmitting transistor may be published.
3. All of them must not be made public.

As for me, I think it would be better to publicize and fill in the name of the transistor of the end stage on the diagram figure published on the HP.

I would be happy if you could reply to me.

Translated with www.DeepL.com/Translator (free version)

Contact Roman directly via This email address is being protected from spambots. You need JavaScript enabled to view it., because you questions are very specific/individial.

Hello.
This block diagram was prepared by our company for Shigehiro Kinoshita in 2019, so he could insert it in the UM for Japan market, since this information is required.
Yes, you can publish this diagram as a whole, transistors are marked there.

Dear Mr. Rome

　Thank you for your help. Thank you for your reply. As I mentioned in the forum, I applied for a 100W station with this block diagram and the results of measuring sunsdr2dx with a spectrum analyzer (spurious measurement). As a result, it passed with flying colors and I was able to get a license. So I thought I would share this method with the many Sunsdr2dx fans in Japan.
　Now that I have received permission to publish this article, I will write an article and publish it. Thank you very much.

P.S. You probably know that Mr. Kinoshita, the president of EDC, the company that asked us to create the block diagram, passed away in July 2021, and we are very sorry to hear that. He wrote many articles on ExpertElectronics products and systems, which were very informative.
　Once again, I would like to express my sincere condolences for his passing.

Hello Hideki.
Thank you for sharing this information, please let me know when you publish the article, I'll make a reference to it on our web-site.

Shigehiro Kinoshita was a good man and an excellent engineer, I'm grateful I knew him, at least via emails and phone calls.

hello ROME it is preferable for the PTT command to make a small assembly like that
cordially Pascal F4JFG 73's
CPC1035N ET UNE RESISTANCE 1KOHM 1/4 WATTS
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