SolidRF Building Force Pro5 MANT User Manual page 7

ATTENTION: Self Oscillation
We strongly recommend it must achieve the Minimum Required Separation Distance for the
installation. The improper installation could result in possible Self Oscillation.
Minimum Required Separation Distance (MRSD)：6 meters (20 ft ) distance and 4 meters ( 13 ft )
vertical height distance.
Antennas Installation Recommended
What is Self Oscillation:
When the antennas are too close, they
could pick up each others signals,
creating a feedback loop condition,
which is called Self Oscillation.
≤ 90°
Or
By FCC regulations, the cell phone
booster would automatically detect this
condition and immediately shut down to
prevent Self Oscillation from damaging
the cellular network.
(see TroubleShooting Booklet)
How to correct Self Oscillation: Antennas Installation Prohibited
If the booster detects Self Oscillation, it
will not operate until the condition is
corrected. One way to correct Self
Or
Oscillation is to increase separation
distance between the antennas until the
sufficient separation distance is
achieved. Also the antennas can NOT
directly face each other.
Why is it so important to prevent Self Oscillation:
The Self Oscillation could cause interference to the cellular network, The FCC regulations
extremely prohibit cell phone booster users from causing interference to the cellular networks. If
you were contacted by the FCC or any wireless provider – yours or any other – and told your cell
phone booster is causing interference, you must shut it down until you can fix the interference
problem. Under most situation, it is Self Oscillation problem.
Please refer to:
https://www.fcc.gov/wireless-telecommunications/signal-boosters/faq/signal-boosters-faq.