Selex LEMO to Peltor adapter: Difference between revisions

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=== Suitable microphones ===
=== Suitable microphones ===
With dynamic microphone you must use dynamic to electrec microphone adapter circuit. Quick googleing finds that Peltor MT7, MT73 and MT14 microphones needs the adapter board. Peltor MT53 should be electrec microphone by default and should not need the adapter board. (Not tested)


Tested with Peltor MT7 microphone.
===== Electric microphones works without additional components. =====
Peltor MT53 series works without additional components.


* '''Partlist'''
===== Dynamic microphones needs additional components =====
** R1 100kOhm
Tested with Peltor MT7 microphone which needs the adapter circuit.
** C1 10nF
** Q1 BC547B


[[File:Dyn-to-elec-converter-circuit.png|thumb|294x294px]]
You must use a dynamic-to-electret microphone adapter circuit with a dynamic microphone. A quick Google search reveals that the Peltor MT7, MT73, and MT14 microphones require an adapter board. The Peltor MT53 is an electret microphone by default, so it won't need the adapter circuit.
 
* [[File:Dyn-to-elec-converter-circuit.png|thumb|Dynamic microphone to electret microphone input circuit [https://www.transkommunikation.ch/dateien/schaltungen/diverse_schaltungen/audio_circuits/Dynamic%20microphone%20to%20electret%20microphone%20input.pdf <nowiki>[3]</nowiki>]]]'''Partlist'''
** R1 100 kΩ Resistor / 200-500 kΩ trimmeripotentiometri
** C1 10µF Capasitator / MLCC size 0805 or 1206
** Q1 BC547B Transistor / SOT-23 SMD


=== References ===
=== References ===

Latest revision as of 19:07, 29 April 2026

Parts

Selex PRR LEMO to Peltor J11

Lemo Pinout
Lemo pinout.The connections given are defined as 'when looking into the sockets'.[1]

LEMO

  1. Microphone+ / Green
  2. N/A
  3. Speaker + / Yellow
  4. GND / Brown (blue) (sprk)
  5. GND / White (mic)

*Numbering clockwise from the back of the connector

JT-101 techincal documentation [2]

NEXUS TJ-101

Civil / Peltor wiring
  1. Microphone GND / White
  2. Microphone + / Green
  3. Speaker + / Yellow
  4. Speaker GND / Brown (blue)
Nato wiring
  1. Microphone GND / White
  2. Speaker + / Yellow
  3. Microphone + / Green
  4. Speaker GND / Brown (blue)

Suitable microphones

Electric microphones works without additional components.

Peltor MT53 series works without additional components.

Dynamic microphones needs additional components

Tested with Peltor MT7 microphone which needs the adapter circuit.

You must use a dynamic-to-electret microphone adapter circuit with a dynamic microphone. A quick Google search reveals that the Peltor MT7, MT73, and MT14 microphones require an adapter board. The Peltor MT53 is an electret microphone by default, so it won't need the adapter circuit.

  • Dynamic microphone to electret microphone input circuit [3]
    Partlist
    • R1 100 kΩ Resistor / 200-500 kΩ trimmeripotentiometri
    • C1 10µF Capasitator / MLCC size 0805 or 1206
    • Q1 BC547B Transistor / SOT-23 SMD

References

  1. [1] https://www.cryptomuseum.com/radio/selex/prr/index.htm
  2. [2] https://eu.mouser.com/datasheet/3/59/2/tj_101.pdf
  3. [3] https://www.transkommunikation.ch/dateien/schaltungen/diverse_schaltungen/audio_circuits/Dynamic%20microphone%20to%20electret%20microphone%20input.pdf