Nexion Data Systems

Unified Communications - Remote Data Solutions

nexion NX6440

Can I extend the duty cycle of my radio ?

  • A1. Among other things, the duty cycle of a transmitter is related to the heat generated by the unit whilst transmitting. The manufacturer has listed a maximum operating temperature for the transceiver in the specifications list and this figure must never be exceeded. Keeping the transmitter well under the listed heat threshold is an important step to increasing the units duty cycle.

  • A2. If the base is relatively close by, try experimenting with reducing the transceivers output power. Most high power mobile transceivers can be programmed to operate at lower output levels. Less transmit level directly equates to less heat.

What is the duty cycle of my mobile radio ?

  • Different between manufacturers - please check the documentation for your radio. A common duty cycle is 25-30%.

What is a Duty Cycle ?

  • Duty cycle is the relative proportion of time during which the transmitter is operational. A 20% duty cycle means a transceiver must be in receive mode or idle for 8 minutes for every 2 minutes spent in continuous transmission.

Can someone listen in on my transmissions using another Nexion modem ?

  • Yes - if they can guess your 'FGU' address. Nexion Data Systems recommends changing the FGU from the default of 001,002,003. For higher security requirements a 48/128bit encryption module is under development.

How easy is it to eavesdrop on my radio data ?

  • Digital data entering a Nexion modem is first converted into analogue signals before transmission by a unique conversion algorithm. Without a second Nexion modem to decode a received audio data stream the signal appears as noise or interference on the radio channel.


Nexion Solutions
Unit 1, 53 Boyland Avenue,
Coopers Plains, 4108

ABN: 17099495431

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 +61 7 3373 2390

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