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Information Needed:
Sponsor: _____________________________________________________________
Transmit Frequency: _________________ MHz
Transmitter Output Power: ____________ Watts (97.103(e)(6))
Antenna Make and Model: _______________________________________________
Antenna Gain (in dB over a half-wave dipole)__________ dBd
Type of Antenna feed line: ________________________________________________
Length of Antenna feed line: _______________ feet
Duplexer Make and Model: ______________________________________________
System Gains:
Transmitter Output Power: ___________________ dBW
Add the Antenna Gain: + ___________________ dBd
Equals system gain = ___________________ dB
System Losses:
Length of Antenna Feed Line: ______ feet / 100 = _____________
Multiply by the cable loss factor from Table II X ____________ db per 100 ft.
Equals cable loss in dB = ___________________ dB
Add duplexer insertion loss
(If used): + ___________________ dB
Equals total system loss = ___________________
Calculate Transmit ERP
System Gain: _________________ dB
Minus System Loss: _________________ dB
Equals ERP in dBW _________________ dBW
Equals ERP in watts: _________________ Watts
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