Thanks to N4IRS , Now we can utilized the allstarlink’s asterisk USRP module to link to the Analog_bridge program/MMDVM_bridge and of course, the software AMBE transcoding MD380-emu.
The basic diagram of the implementation is as below:-
My analog radio Yaesu FT-7900 which connected to serial to windows Echolink (9W2LWK-R) <-> connected to Raspi3 allstarlink asterisk echolink module (9W2LWK-L) , which also connected to allstarlink node 47259 which is also connected to USRP private node 1999 (which internal link via udp port) <-> Analog_Bridge (which need to transcode the audio PCM/DMR via MD380-emu program) <-> MMDVM_Bridge <-> KR BM Master (TG50210) and back forward.
The procedures / process looks very complicated, but if you follow the step from N4IRS documents (at below link), you will get through the setup steps by steps.
The document above uses Rasbian/Debian type of linux distribution, where it utilized apt-get (Repository) to install all the dependencies, if you are someone that uses Archlinux like me, you can install the dependencies by using Pacman -S xxx command instead, and then download the individual binary version of Analog_Bridge, MMDVM_Bridge here at GitHub , the /bin directory should have the Analog_Bridge.amd64 , Analog_Bridge.armhf, Analog_Bridge.i386 | MMDVM_Bridge.amd64, MMDVM_Bridge.armhf, MMDVM_Bridge.i386 accordingly depending on your Linux architecture.
The most difficult part is the MD380-emu, where you need to compile from source from the github if you are not using Rasbian/Debian based linux.
For those amateur stations who want to play around with your audio in DMR/C4FM/DSTAR , they can firstly try out Analog-digital on analog radio simplex gateway @ 148.825Mhz CTCSS 177.3Hz hosted by 9W2LWK if you are in USJ/Puchong/Putra Jaya/Cyber Jaya/Shah Alam Area
If you are on android app and you wanted to try out DMR/C4FM/DSTAR , you can use echolink 9W2LWK-L/9W2LWK-R , and listen to your own audio in Broadcastify or Brandmeister Hoseline , of course this is also applied on Analog_bridge , on 148.825Mhz
Looking forward to see new stations try out your audio in C4FM/DMR/DSTAR before jumping to digital devices like FT70D (C4FM) , MD380/390 (DMR), FTM100DR (C4FM, WiresX), Icom ID-51E (DSTAR), Motorola XPR 7550 (DMR) etc. (See my YouTube video on my previous post on how to use SDR to decode DMR signal/RF)