I would like to study GPS module. I will divert R909-VFO-1602 PCB for the tryal base for GPS corrected VFO. R909-VFO_Clock with GPS github.com github.com At first I connected GPS via SoftwareSerial and show the longtituse and latitude on t…

(This material is translated version.) R909-DSP The last radio I will introduce is R909-DSP. This receiver was designed and sketched by myself based on Jason's idea of the R909 receiver. I thought it worked for the time being, but there we…

Next up is the R909 kit. This kit was developed by JasonKits. JasonKits is running as an e-commerce site by Ham on the island of Malta, which sells a variety of electronic circuit boards and kits. In the area of hams, he is distributing op…

(This material is translated version.) Next up is the R80 kit. This kit seems to be developed and manufactured by the same manufacturer as the first model. R80 front view Mr.kon has reported of kit assembly on his blog. I asked Mr.kon some…

（This is translated material.）I think there are many people who buy air band receiver kits from Amazon etc., assemble them by soldering, and then use them.I made it, tried running it, but thought it wasn't good enough, so I ended up putt…

(This material is translated version. ) The curent kinds of radios. 1. I'm calling the 1st machine which is the Chinese reciver kit remodeled with Arduino-controlled Si5351a. That is SA-602＋MC1350＋LM386 with analogue VFO and 16columns 2 …

A few years ago I assembled the Chinese receiver kit which was simple and cheap but useful. After I used it to hear the communication of air trafic, I would like to improve it. Arduino controlled LO At first I appended the digital controll…