Fixed Single Channel receiver with Serial Output

[AIS_GOD]

I am trying to find a radio, receive only, that monitors channel 16(158 MHz) and has a serial output. I already have lantroix network adapters that can take the digital signal and send it to servers. Is this possible? Thanks

[AIS_GOD]

I like this one but need fixed channel
Agilent N6841A RF Sensor

[EC-7]

You would need more than just a receiver with serial output.
You need a receiver with a discriminator output for clean audio signal, then feed that to a GMSK demodulator IC to convert the audio to a digital data signal.
From there you might have to format the data to something usable, if you plan to feed it to a website such as MarineTraffic.com. I don't know if they use the raw data or something formatted.

I have a Comar SLR200N Networked AIS receiver and they use the LANtronics ethernet adapter in it, and it sends to MarineTraffic.com

I have looked into building a project to use something like an Arduino or RaspberryPi kit to use with a basic receiver, like a scanner. The GMSK decoder IC is about $20-25 itself, plus extra parts.

If you need any other help, PM me.

[kc8vlv]

Originally Posted by AIS_GOD

I am trying to find a radio, receive only, that monitors channel 16(158 MHz) and has a serial output. I already have lantroix network adapters that can take the digital signal and send it to servers. Is this possible? Thanks

are you using this for a.i.s.? back in the day regency had modied their r-106 into a marine monitor with an speaker output and external antenna. collins-ross back in 1988 had tried an external connection for autopilot interface with there "total nav" concept.

[AIS_GOD]

I have a large AIS network installed in the inland waterways and want to add voice monitoring. Currently using a AIS radio recievers(sr161's), and lantronix boxes. I would like to add channel 16 monitoring through the extra serial port in the lantronix box but dont think it will be possible. These boxes might be better suited??
https://www.ettus.com/product/details/UE110-KIT
They have dual ADC converters, ARM processors that can encode the audio into MP3, and would hopefully be able to scan 161 and 162 for AIS and monitor channel 16. It would reuire scrapping the curent 500 stations, but being able to use the same antenna's and network connection etc would make it an easy box swap hopefully.

[aaknitt]

Originally Posted by AIS_GOD

I have a large AIS network installed in the inland waterways and want to add voice monitoring. Currently using a AIS radio recievers(sr161's), and lantronix boxes. I would like to add channel 16 monitoring through the extra serial port in the lantronix box but dont think it will be possible. These boxes might be better suited??
https://www.ettus.com/product/details/UE110-KIT
They have dual ADC converters, ARM processors that can encode the audio into MP3, and would hopefully be able to scan 161 and 162 for AIS and monitor channel 16. It would reuire scrapping the curent 500 stations, but being able to use the same antenna's and network connection etc would make it an easy box swap hopefully.

A USRP has the bandwdith to monitor multiple channels, do the AIS decoding, and demodulate the voice. However, being a software defined radio, it will take a lot of software development to do that. If you already have an existing AIS receiver network and just want to add single-channel voice monitoring, a USRP is probably overkill. A simple scanner or cheap Wouxon radio as a receiver will work to receive the signal and do the FM demodulation for you. Once you have analog audio, you need to convert it to digital (streaming mp3 is the most common format). You can use a cheap thin client running Scannercast or RadioFeed to convert that to mp3 and send to network. Some people have been experimenting with using a $35 Raspberry Pi board to do this, not sure if anyone has it working yet. Hop on over to the Streaming Audio forums on this board for lots more info.

Andy

[EC-7]

If you are serious about getting multiple systems working, contact me at kc8grq @ yah00 *com. I have been working on a similar project with some devices and might be able to get a system working for you.

Do you have any more info on what you have running?
Model of the Lantronix units?
Installed Locations?