Field Report Kit

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Project: Field Report Kit
State Stalled
Members PsychiC, xopr
GitHub No GitHub project defined. Add your project here.
Description Field Report Kit


If we want field reporting on the CCC camp, we quickly need a kit that provides us that service.

Our first option was to use the available wifi, but since the link quality is unsure, we asked CoolePascal for a possible solution. He opted for the PMR 446MHz with boosted power and bandwidth. Since we only have a couple of weeks left, and our video transceiver kits were unusable, we're taking the shortcut by connecting a reporter kit directly to a DECT handset.



  • use a DECT handset
  • solder a 3.5mm 4p jack contra (TRRS) onto it, according to the Nokia standard: 1-Left, 2-Right, 3-Mic, 4-Common. Note that iPwn has the Gnd and Mic mixed up.


  • create an amplifier for reporter feedback, and connect the jack to the kit using a poor-man's mixer (i.e. resistors)

The kit still needs some work (see todo), but it should work like this:

  • left socket is an unbalanced 6.3mm jack/XLR combo connector to connect a dynamic microphone to it
  • right socket is the 6.3mm headphone connector
  • (todo) potentiometer defines the feedback volume
  • switch powers the kit on/off (displayed by the led)
  • (todo) 3.5mm TRRS plug connects to the transceiver (DECT/GSM handset)


  • create a working connector, preferably 4p 3.5mm jack contra to a DECT handset

Note that impedance and amplification and the like might not be optimal for connecting a dynamic microphone and headphones to the handset

  • connect the TRRS plug to the kit using resistors (TBD)
  • connect the potentiometer before the amplifier (check if it has impact on the transceiver signal)
  • acquire 9v batteries