Adtran TRC4106 Manual Do Utilizador

Section 2, Microwave Path Engineering Basics

TRACER 4206 System Manual

20

© 2002 ADTRAN, Inc.

612804206L1-1B

In certain areas where lightning strikes are frequent, a lightning arrestor should be installed directly on the 
antenna coax. This will help protect the RF electronics in the downstream path from damaging voltages 
and currents, including the TRACER 4106/4206 unit.

Receiver sensitivity is a value expressed in decibels referenced to one milliwatt (dBm) that corresponds to 
the minimum amount of signal power needed at the receiver to achieve a given bit error rate (BER). 
Receiver sensitivity is usually a negative number of decibels, and as such smaller receiver sensitivity 
(higher quantity negative numbers) is better for a given BER. Several factors affect receiver sensitivity, 
including the data bandwidth of the wireless link, and the amount of additional signal degradation 
introduced in the receiver electronics. The receiver sensitivity of the TRACER 4106 is -93 dBm at 10

-6

 bit 

error rate, while the receiver sensitivity of the TRACER 4206 is -90 dBm at 10

-6

 bit error rate.

Three software selectable band plans are provided for frequency agility, should an interferer be present 
nearby. Changing the 4106/4206 bandplan does not require additional components, or opening of the 
radio. See >TRACER System Configuration > RF Bandplan on page 47 for additional details.

RG58

80

N/A

RG8 (air)

20

N/A

RG8 (foam)

9

N/A

1/4” Coax

5.91

11.36

3/8” Coax

5.76

9.65

1/2” Coax

3.83

6.49

5/8” Coax

2.98

4.90

7/8” Coax

2.2

N/A

1 1/4” Coax

1.62

N/A

1 5/8” Coax

1.41

N/A

5.8 GHz Elliptical Waveguide

N/A

1.23