Hi,

here is another update. I am impressed with DRA818 modules, although I have noted that scanning command does not work. Also some other functions that similar modules offer, do not work, like microphone level, scrambling, sensing SMS messages. If interested read on...

I got many feedback to my posts, some were concerning PCB which is partly SMD partly THT. Apparently some users have problems with soldering SMD components so I have designed a PCB with "classical" THT components. See image below. The PCB can be purchased here.

With respect to the program, I have tested 1.5" OLED as display and it does perform nicely, but somehow numbers/letters on it are rather small. So I have tested also Nokia5510 GLCD (82x82pixel) and this one was much better. The program that I am currently working on supports receiving on two bands (VHF&UHF), because DRA818V modules can receive also UHF signals. Unfortunately they do not transmitt well on UHF.

One of the future projects with these modules will be a Micro repeater. It will contain one VHF and one UHF module, duplexer, LiPo, sollar cell and some logics. It should be a self contained micro repeater for local work. Will post more info in the blog as the project evolves.