[App_rpt-users] RTCM RSSI calibration

Skyler F electricity440 at gmail.com
Sun Oct 22 15:39:55 EDT 2017


For one voted site, we are using a Motorola Maxtrac 900 and for the master
we are using a quantar receiver.

Unfortunately, the RSSI levels don't really mean the same thing between the
two receivers. The Maxtrac Voter will be almost full quieting and then the
Quantar will pick it up relatively very noisy.

I know it is not the best idea to use two separate models of receivers for
voting, but other then the signal strength, the audio seems to sound the
same. The problem with the Quantar is that it is a "Virtual Discriminator
Audio" which needed BEW mode on the RTCM to be enabled and that is what
seems like is messing up the measurements.

Is there a way to tune these RSSI levels so the perceived signal strength
has the same correlation on the numbers 0 - 255.

In addition, we would like to disable the master receiver at some points,
like only have the voter turned on for receive just to test it's coverage.
Is this possible?

Thank you,
Skyler
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