AIERIT05-452

TYPE OF TEST:Radio Frequency Power Output FCC PART:2.985 MANUFACTURER:RITRON, INC. 505 West Carmel Drive Carmel, IN 46032 MODEL:RRX-452 TYPE OF UNIT:UHF-FM Voice and Data Full Duplex Repeater FCC ID:AIERIT05-452 DATE:August 25, 1998 PROCEDURE: A variable source of DC power was applied to the RRX-452 rear panel connector. This simulates the full range of operating voltages that may be applied to the unit via the external DC power input connector. The RRX-452 transmitter module was connected to the 50 Ohm power termination of an HP 435B Power Meter for RF Power measurements. The RRX-452 was aligned for transmitter operation on 464.600 MHz. (Fo) per the tune- up procedure outlined in the preliminary manual. The collector supply line to Q209, the final RF amplifier transistor, was broken on the Supply side of Z205. A Beckman Industrial, 4.5 digit, model 4410 DMM was connected in series to measure the collector current during transmit. Supply voltage was measured, also at Z205, using another DMM, during transmit. The voltage was measured after any voltage drop caused by inserting the ammeter. With 12.6 VDC applied, the power was adjusted using the power adjust control R243 to show operation at various power levels. With higher supply voltages, R243 was set to provide maximum power output. TYPE OF TEST:Radio Frequency Power Output (page 2) FCC PART:2.985 MANUFACTURER:RITRON, INC. 505 West Carmel Drive Carmel, IN 46032 MODEL:RRX-452 TYPE OF UNIT:UHF-FM Voice and Data Full Duplex Repeater FCC ID:AIERIT05-452 DATE:August 25, 1998 TEST FREQUENCY:464.600 MHz TEST DATA: InputInputInputOutput Volts Current DC PowerRF PowerEfficiency (VDC) (Amps) (Watts)(Watts) (% ) 12.600.33254.191.0023.9 12.600.47295.962.0033.6 12.601.08413.678.0058.5 13.60*1.203616.379.0055.0 14.00*1.250017.509.4053.7 * The internal DC power supply of the RRX-452 is specified to be set to12.6 VDC. These higher voltages could be experienced if the unit is externally powered by a DC source such as a “float charged” or solar power battery system. ************************************** Certifying Engineer:Arnal Cook Date:August 26, 1998

TYPE OF TEST:Spurious Emissions at Antenna Terminals FCC PART:2.991; 90.210 (d) (3) MANUFACTURER:RITRON, INC. 505 West Carmel Drive Carmel, IN 46032 MODEL:RRX-452 TYPE OF UNIT:UHF-FM Voice and Data Full Duplex Repeater FCC ID:AIERIT05-452 DATE:August 25, 1998 PROCEDURE: The RRX-452 was aligned for transmitter operation at 464.600 MHz (Fo) per the tune-up procedure in the preliminary manual. These tests were conducted as specified in 2.991 “under the conditions specified in 2.989 as appropriate” (i.e. “when modulated by a 2500 Hz tone at an input level 16 dB greater than that necessary to produce 50 percent modulation... at the frequency of maximum response of the audio modulating circuit.”). A variable source of DC power was applied to the RRX-452 rear panel connector. This simulates the full range of operating voltages that may be applied to the unit via the external DC power input connector. The RRX-452 transmitter module’s output connector was connected to a 50 Ohm, 100 Watt, 30 dB attenuator. The output of the 30 dB attenuator was connected via a tunable notch filter to the input of the Hewlett Packard Model 8559A Spectrum Analyzer. This notch filter was tuned to 464.6 MHz and its attenuation through 1000 MHz was measured and is included with the 30 dB attenuator in the Correction Factor column. For frequencies above 1000 MHz, the notch filter was removed and the resulting Correction Factor is purely due to the 30 dB attenuator. The spectrum was searched from 4 MHz (the microcontroller reference crystal which is the lowest frequency used in the unit) to the 10th harmonic of the operating frequency. All unreported emissions were more than 20 dB below the FCC limit of 50 + 10 log Power below the carrier or -60 dBW at 10 Watts or -20 dBm per 90.210 (d) (3). The test data was obtained using a range of supply voltages and power control settings (R243). TYPE OF TEST:Spurious Emissions at Antenna Terminals (page 2) FCC ID:AIERIT05-452 TEST FREQUENCY:464.600 MHz. SUPPLY VOLTAGE:12.6 VDC POWER OUTPUT:1.0 Watts (at Transmitter Module Output) EmissionMeasuredCorrectionResultantF.C.C. FrequencyAmplitudeFactorAmplitudeLimit (MHz.)(dBm)(dB)(dBm)(dBm) 431.8-7834-44-20 464.6-427128n/a 497.4-7831-47-20 929.2-7034-36-20 1393.8-7830-48-20 1858.4-7830-48-20 2323.0-7830-48-20 2787.6-78 30-48-20 3252.2-7830-48-20 3716.8-75 30-45-20 4181.4-7430-44-20 4646.0-6530-35-20 SUPPLY VOLTAGE:12.6 VDC POWER OUTPUT:2.0 Watts (at Transmitter Module Output) EmissionMeasuredCorrectionResultantF.C.C. FrequencyAmplitudeFactorAmplitudeLimit (MHz.)(dBm)(dB)(dBm)(dBm) 431.8-7934-45-20 464.6-3971+32n/a 485.82-7831-47-20 497.4-7531-44-20 929.2-7034-36-20 1393.8-7830-48-20 1858.4-7830-48-20 2323.0-7030-40-20 2787.6-78 30-48-20 3252.2-7830-48-20 3716.8-78 30-48-20 4181.4-7830-48-20 4646.0-7830-48-20 TYPE OF TEST:Spurious Emissions at Antenna Terminals (page 3) FCC ID:AIERIT05-452 TEST FREQUENCY:464.600 MHz. SUPPLY VOLTAGE:12.64 VDC POWER OUTPUT:8.0 Watts (at Transmitter Module Output) EmissionMeasuredCorrectionResultantF.C.C. FrequencyAmplitudeFactorAmplitudeLimit (MHz.)(dBm)(dB)(dBm)(dBm) 431.8-7234-38-20 464.6-33.571+37.5n/a 485.82-7831-47-20 497.4-69.5 31-38.5-20 929.2-5834-24-20 1393.8-72.530-42.5-20 1858.4-72.530-42.5-20 2323.0-60.530-30.5-20 2787.6-78 30-48-20 3252.2-7330-43-20 3716.8-67.5 30-37.5-20 3977-72.530-42.5-20 4181.4-7830-48-20 4646.0-7830-48-20 SUPPLY VOLTAGE:13.34 VDC POWER OUTPUT:9.0 Watts (at Transmitter Module Output) EmissionMeasuredCorrectionResultantF.C.C. FrequencyAmplitudeFactorAmplitudeLimit (MHz.)(dBm)(dB)(dBm)(dBm) 431.8-7134-37-20 464.6-32.571+38.5n/a 497.4-7031-39-20 929.2-58.534-24.5-20 1393.8-7230-42-20 1415-7830-48-20 1858.4-66.530-36.5-20 2323.0-6030-30-20 3716.8-70 30-40-20 Certifying Engineer:Arnal Cook Date:August 25, 1998