User's Manual

14221-1200-4010, Rev. B

9. Set the radio to test a conventional channel.

It is recommended that a Conventional RF channel be allocated for this testing. This same

channel should be used during the antenna test procedure presented in the next section.

If possible, use a test channel in the approximate center of the respective RF band.

10. Insert the 100-watt element into the wattmeter and position the element to measure forward RF

output power. Rotate it as necessary.

The arrow on the face of the element must point away from the XG-100M antenna jack and towards

the 50-ohm load/terminator for forward power measurements.

11. Set the wattmeter to measure peak RF power.

12. Key the MRU transmitter via the microphone’s PTT button.

Transmit only for as long as needed to take the measurement, then immediately disable the

transmission.

13. For an 800 MHz band transmission, compare the wattmeter’s reading with the target RF output power

range of between 22.1 and 55.5 watts (35 watts ±2 dB). This transmit output power range assumes

the Unity mobile is currently configured for high-power transmit.

For a 700 MHz band transmission, compare the wattmeter’s reading with the target RF output power

range of between 15.1 and 23.9 watts (19 watts ±1 dB). This transmit output power range assumes

the Unity mobile is currently configured for high-power transmit.

For a 50-Watt VHF or UHF band transmission, compare the wattmeter’s reading with the target RF

output power range of between 39.8 and 63 watts (50 watts ±1 dB). This transmit output power range

assumes the Unity mobile is currently configured for high-power transmit.

As stated in the NOTE on page 78, the wide power level range errors may be caused by test

cable loss, etc.

14. If the wattmeter reading is within the range, record the measured value in the appropriate space on

the data collection form near the end of this manual (page 90).

If the wattmeter reading is outside the range, verify the power source voltage (i.e., battery voltage)

is within the specified range, recheck all connections and measure the RF output power again. If this

fails to produce a reading within the range, replace the radio and repeat this procedure. If problems

persist, contact the Technical Assistance Center (see page 21).

15. Un-key the transmitter by releasing the microphone’s PTT button.

NOTE