Installation Instructions

TowerIQ, Inc | 1609 Park 370 Place, Hazelwood, MO 63042| 844‐626‐7638 | cs‐guardian@tower‐iq.com
17
OK
CAUTION: SIGNAL OSCILLATION CAN CAUSE RADIO
INTERFERENCE WITH RADIO TOWERS AND RESULT IN CIVIL
AND/OR CRIMINAL PENALTIES.
3.4 Antenna Separation
Proper antenna separation prevents signal oscillation (feedback) that can interfere with the radio tower. Separation is measured in a
straight line from the exterior antenna to the closest interior antenna. The closest allowable distance dependson a number of factors,
such as BDA gain level, building material, etc. Recommended separation distances are:
Amplifier gain Min. separation (ad)
40 dB 5’‐6’
45 dB 15’‐20’
50 dB 50’
55 dB 60’
65 dB 75‐80’
70 dB 100’
75 dB 100’‐120’
80 dB 120’‐180’
Vertical separation is more important than horizontal separation. If you are unable to obtain the required separation horizontally, try
raising the exterior antenna. You may also try reducing the BDA gain as described in Chapter 5 of this manual.
Antenna Safety Precautions:
You can mix and match dome and directional antennas as needed to obtain proper coverage throughout the building or area where
you need to boost the signal. If you use a Yagi exterior antenna, you should normally aim it away from all interior antennas, regardless
of separation, to prevent oscillation.
Antenna Aiming