Specifications

Appendix–2
FM500 User's Manual
Transmitter efficiency output
RF Power Output Efficiency-FM500
PADC Volts PADC Amps RF Power Efficiency
51.3 13.91 550 77%
48.3 13.29 500 78%
45.5 12.74 450 77%
42.7 12.14 400 77%
39.4 11.46 350 78%
36.0 10.68 300 78%
33.0 10.00 250 76%
29.6 9.25 200 73%
25.4 8.28 150 71%
21.1 7.29 100 65%
Power measurements were made at 97.1 MHz. Voltage and current
measurements were taken from the unit's built-in metering. The accuracy of
the internal metering is better than 2%. Return loss of the RF load was greater
than -34dB at test frequency.