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Table of Contents

Radio frontend

Unit role

One units must be set to Master and the other one to Slave.

Please note that the center frequency must be equal for "master" and "slave" unit to establish the radio link.

When a wireless link has been established Slave unit will continuously inherit radio frontend parameters from Master unit excluding frequency channel grid. So, if you change some values on Master they will be set on Slave automatically.

Center frequency

Frequency should be selected manually in accordance with the actual frequency grid. The Quanta 70 accepts values i range 70500-76000.

Power limit

This parameter limits the transmitter power, there are two modes:

  • Transmitter output power - limits the power of transmitter to the set value.
  • EIRP - limits the total system power calculated as: Tx Power + Antenna gain
Antenna gainIs set automatically depending on the value of the integrated antenna gain and used for the EIRP limitation.

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titleFigure - Radio frontend settings

Air frame

Frame length

Frame period affects the following wireless link metrics:

  • The greater frame period the more payload will be transmitted in one frame. Greater values increase latency.
  • The lower frame period the less payload will be transmitted in one frame. Lower values decrease latency.

Please note that frame period value is strongly depends on interference conditions. If larger frames will be dropped the larger payload is lost and system performance is decreased significantly. If smaller frames will be dropped the smaller payload is lost.

Following values are available: 0.1; 0.2; 0.5 ;1; 2; 5 ms.


The wireless link distance range depends from the frame length value. The maximum distance for 0.1 and 0.2 ms is listed below:

  • 0.1 ms 2.5 km.
  • 0.2 ms – 12.5 km.
Downlink/Uplink ratio

Only for Master device. Allows to configure quotes for uplink and downlink directions. Available values depend from frame length.

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titleFigure - Air frame settings


Automatic modulation and transmit power control

AMC strategy

There are following AMC strategies available:

  • Normal - represents a balance between the error rate and throughput values.
  • Conservative - assumes using higher CINR thresholds in order to minimize the error rate.
  • Agressive - lowers the thresholds in order to use higher modulation levels and thus increase the throughput.
  • Extreme - lowers the CINR threshold below the Aggressive strategy values in order to maximize selected modulation and throughput.
Automatic transmit power control

ATPC allows to control transmitter output power automatically based on target RSSI value. If actual RSSI level is lower then unit increases transmitter output power of the remote unit and vice versa. ATPC could not set value that may exceed the "Power limit" value.

  • The Master unit manages the transmit power of Slave unit.
  • The Slave unit manages the transmit power of Master unit.
Target RSSIRSSI value which will be used by ATPC as target.

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titleFigure - AMC and ATPC settings

Frequency channel grids

The frequency grid allows to limit the frequency range available to use. Values can be set as a range (71000-72500) or as a list (71500, 73400, 75600) with the step from 0,125 MHz till 10000 MHz.

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titleFigure - Frequency channel grids