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Calibration Block

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The Calibration block offers full control over the loss and gain from all connected loads to Rx1 and Rx2:

Calibration Block

Left hand side Input:

  • RF

Right hand side Output:

  • RF (calibrated)


You can add the following varying loads to the calibration setup:

  • Antennas (All Aaronia antennas)
  • Amplifier (All Aaronia RF and NF Amplifier)
  • Cable (All Aaronia cables in different lengths from low cost to high end)
  • Attenuator (10, 20, 30 and 40dB)
  • Probe (All E and H probes from the Aaronia Probe Set)
  • Custom (Add you own calibratioin curve e.g. by loading a saved reference/calibration trace)
  • Power Offset (Any value between +/- 100dB in 0,1dB steps)

In addition you can also add a GPS position incl. azimuth and declination:

Calibration Block Settings


All loads will be shown with there corresponding gain/loss as a graph.

All loads together will be calculated to a new overall calibration shown as a grey graph:

Calibration Graph


Typical Calibration Missions:

Typical Calibration Block Missions

We added an Elevation value to the Calibration block:

Elevation added to Calibration block

We added a checkbox to the Position Configuration so you can enable the data position data feed:

GPS Position Configuration Enable

V6 RSA is default calibrated >10 MHz, with optional calibration at 1 MHz. However, since the receiver circuitry works >9 KHz, is it possible to have it calibrated at 9 KHz, or at least 300 KHz on request? What would be charged for the service?

Is it possible to calibrate at the user end, using the calibration block? If so, please explain the steps/mission setup.

Yes we can offer a "low frequency" calibration for 350 Euros including a calibration dataset which you can import to the Calibration block. If you already bought the V6 you would need to send the unit back to us.


ALPS has reacted to this post.

So with low frequency calibration the RSA250X will provide accurate measurements at 9 KHz?

Yes but as you can see in this posting screenshot the sensitivity will be quite poor since you are operating the unit far from the specs.

We use external LNA and Antennas which are not Aaronia products and does not exist in the calibration list. Can you please hint us how we proceed the calibration? We tend to use the gain of amplifier and the antenna but not sure if Noise Figure also play a role. Thanks

Download the "MCS" Software at

The MCS offers a Calibration Editor:

MCS Calibration Editor


You can now add OEM antennas, attenuators, cables and preamplifiers and save them to disk:

OEM Amplifier Calibration


Those files are compatible to the RTSA-Suite PRO and need to be saved to the corresponding RTSA-Suite PRO folder:

Choose folder


The files will show up in the RTSA-Suite PRO Calibration block after reload since they are cached at boot.



Adding an ANTENNA to the calibration will only make sense if you use field strength units e.g. V/m otherwise you will get totally wrong results.

Dear all,

I added an external LNA to the calibration block using MCS software. I imported the Gain of LNA  but it does not ask for the Noise Figure of external LNA. Don't we need the NF of first stage (external LNA) for the calibration (e.g. identifying the noise level adjustment) . In other words is calibration the same for two different LNAs with identical gain but different NFs?

Thank you for the help

Best, A.

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