Crown Low Power Transmitters - Crown Broadcast
Crown Low Power Transmitters - Crown Broadcast
Crown Low Power Transmitters - Crown Broadcast
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Transmitter efficiency output<br />
RF <strong>Power</strong> Output-FM 100<br />
PADC Volts PADC Amps RF <strong>Power</strong> Efficiency<br />
31.2 5.72 110 61<br />
29.6 5.35 100 63<br />
26.4 4.55 79.4 66<br />
23.5 3.90 63.1 68<br />
21.1 3.40 50.1 69<br />
19.0 2.97 39.8 70<br />
17.1 2.63 31.6 70<br />
15.4 2.35 25.1 69<br />
13.9 2.10 20.0 68<br />
12.5 1.90 15.8 66<br />
11.2 1.74 12.6 64<br />
10.1 1.62 10.0 59<br />
9.1 1.52 7.9 57<br />
<strong>Power</strong> measurements were made at 97.1 MHz. Return loss on the attenuators was<br />
greater than 30.<br />
RF <strong>Power</strong> Output-FM 250<br />
PADC Volts PADC Amps RF <strong>Power</strong> Efficiency<br />
45.6 7.14 275 84<br />
43.6 6.85 250 83.7<br />
41.4 6.53 225 60<br />
39.0 6.19 200 60<br />
36.5 5.88 175 62<br />
33.8 5.53 150 64<br />
31.0 5.02 125 74<br />
27.7 4.69 100 65<br />
24.0 4.32 75 64<br />
19.4 3.84 50 65<br />
13.5 3.26 25 70<br />
<strong>Power</strong> measurements were made at 97.1 MHz . Voltage and current measurements<br />
were taken from the unit’s built-in metering. The accuracy of the internal metering is<br />
better than 2%. Return loss of the RF load was greater than –34 dB at test frequency.<br />
Appendix–2<br />
FM30/FM100/FM250 User's Manual
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