> For the complete documentation index, see [llms.txt](https://docs.radioangrezi.de/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.radioangrezi.de/engineering/mobile-studio.md).

# Mobile Studio "Moped"

The **mobile studio** is basicly the studio at Speicher XI in a rack *on wheels*. With a stable internet connection and power provieded you can use it to do *radio everywhere.* Be sure to pack additional microfphone, headphones, headphone ambilfiers and a laptop with it.

The unit was orginally custom build for the Venice Biennale and other events in summer 2019.

![construction sketch draft (2019)](/files/-McV6jXzglz4cscsXfJO)

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![](/files/-McV8q9tOaBq25ZT1V8J)
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![](/files/-McV94mOzi2wZkkPvqm5)
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## Streaming form the mobile unit

1. **Setup** the mobile studio on location
2. Supply **Power**
3. Supply a **wired LAN** connection to the WAN port. The default config requires that the host network (the one you are connecting to) provides a IP-Adress via DHCP and an internet connection without firewall limiations (espacially not on port `8001`).
4. **Turn on** the built-in router, if it is turned off, using the round button labeled "Power".
5. Turn on the mixer on the back.
6. Connection is established if both **PWR**, **LINK** and **LAN** led are glowing in green, on the hardware streamer.
7. Connect your laptop to the on-board **WiFi**. SSID: `Radio Angrezi`, Password: `radioangrezi`
8. Enjoy streaming!
9. Pro Tip: Record on loction using a mobile recorder (e.g. Zoom H4)

*The router does allow for many other configurations, including connecting to a host wifi network, instead of using the cable connection.*

#### Issues?! Check these things:

1. Is the source on the streaming server available (see below)?
2. Is the internet connection working? Try to use [speedtest.net](http://speedtest.net) and ping `stream.radioangrezi.de`
3. Is port `8001` reachable?
4. Does your input **signal** work and is recieved at the **hardware streamer**?
5. Is the `master source` turned **on**?
6. Is the limiter / compressor **on**?

#### Usefull links when using the unit:

* configuration for [DEVA hardware streamer ](http://192.168.133.2/)(192.168.133.2), incl. on-board **level meter**
* configuration for [on-board router](http://192.168.133.1) (192.168.133.1)
* access to [chat / shoutbox](http://talk.radioangrezi.de/studio.html)
* server side / client level meter (not great)
* connecting / disconnecting the Studio at Speicher XI from the source via [Monit server monitoring](http://studio.radioangrezi.de:2812/darkice)
* [studio backend](http://studio.radioangrezi.de/) to check if the master source is **on** or **off.**
* [server side recorder](http://studio.radioangrezi.de/controller/)

#### Setting up the correct source on the streaming server

{% hint style="danger" %}
The mobile studio is currently connecting to the *master source* as well:\
**Either the mobile studio or the studio at Speicher XI can connect to the stream source at the same time.**
{% endhint %}

If you want to **connect the mobile studio** to the stream stop the [darkice service](http://studio.radioangrezi.de:2812/darkice) on the server and plugin in the mobile studio / encoder.\
If you want to **connect the studio** at Speicher XI to the stream, disconnect the mobile studio and reactivate the [darkice service](http://studio.radioangrezi.de:2812/darkice).\
As long as the source is in use, darkice will not start or the mobile studio will fail to connect.

## Equipment on Board

* Mixer: A\&H ZED-14
* Limiter/Compressor: Behringer MDX2600 v2
* Streamer: Deva DB91-TX
* Router: Asus RT N66U with DD-WRT (Recorder)
* 2x SM58 Microphones
* 1x Headphones (Audio Technica)
* 1x Phone to recieve phone calls + as soundboard
* TRS + Chinch Cables for other Devices
* LAN cable 3m
* TP-Link 5 port switch
* Cables, Screwdriver, Tape
* printed manuals for hardware on board

## Packing list for Events

* N Microphones
* N Microphone Cables, e.g. 6 m
* N Headphones
* N Headphone cables
* extra headphone for monitoring (on board)
* Headphone amplifier (small rack in the studio)
* Snake / Multicore (also in the studio)
* cables for laptop or instrument input
* LAN cabel, short and long
* extra power cabels and distribtion
* rain cover
* gaffa tape and cable straps
* marketing material and angrezi flag
* extra mobile recorder (e.g. Zoom H4) for extra local recording

## Configuration (for Tech Crew)

{% hint style="info" %}
needs to be extended -- JA, 2021
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### DEVA

The harware streamer tryes to stream to two endpoints:

* studio.radioangrezi.de:8001 
* 10.10.10.63:8001 (if in local network)

For both the source `master` and user `source` is used.\
Encoder 1 is cofigured for `MP 3` quality level 4.

On TCP port `5000` the live PCM signal can be recieved. This was origianlly indeded to do local recordnings to the flash memory on the Router.

### Router

The router is working a Gateway / Router, DHCP-Server, DNS-Sever, Samba-Server, WiFi Access Point, ggf. WiFi Client (as Bridge).

The local storage (128 GB) is available from the local network via `local.server.radioangrezi.de` (192.168.133.1). (Name resolution is configured manually with the local dnsmasq.) Sometimes the `NAS` (Samba) settings need to be reapplied to start the server.

You can check your the incoming bandwith at the Server (at home) with: `sudo tcptrack -i enp4s0 port 8001`