HW V4 / © 2005 – 2013 Aaronia AG, DE-54597 Strickscheid
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Manual Spectran V4
Tables and exposure limits
If you were using a cable with 5dBi damping, you would need to refer to those values 4dB
higher than the measured value (5dB minus 1dB [as 1dB damping is already included in the
calculated table values]).
That is -24dBm in place of -28dBm.
TIP:
Even in case you do not know the frequency of the signal source, you can still achieve a
comparatively exact field strength measurement by simply using the „Lambda X“ column.
This column presents a weighted average of all possible frequencies between 900MHz and
2.4GHz, still giving you an accuracy of approxi/-4dB. That is still significantly better
than the inherent inaccuracy of various rudimentary instruments for field strength
measurement available from third parties. The frequency range from 900MHz to 2.4GHz
spans a large variety of typically interesting signal sources – for example, all cellular phone
networks (GSM900, GSM1800, UMTS) and the respective phones, as well as 2.4GHz WLan
and microwave ovens.
