GL7RT1200

Test Report: RT1200 Additional tests were carried out on a sample RT1200 to Code of Federal Regulations Book 47 part 2 paragraph 989(c)(1) and 995(a)(2) and (b) The results are shown below. Paragraph 2.989 Occupied Bandwidth. Method: The sample radio was connected to an AF source and modulation meter. The AF frequency was set to 2500Hz and the modulation level set to 50% of the maximum level (2.5kHz). The level was increased by 16dB and the AF frequency was varied to search for the maximum deviation. The Spectrum was then displayed on a spectrum analyser and the results plotted. Test Equipment: AF sourceRohde & Schwarz CMT18/8/98 Modulation MeterRohde & Schwarz CMT18/8/98 Spectrum AnalyserRohde & Schwarz FSAS6/10/98 Results: Occupied Bandwidth -90 -80 -70 -60 -50 -40 -30 -20 -10 0 156.5000156.5200156.5400156.5600156.5800156.6000156.6200156.6400156.6600156.6800156.7000 DBLimit The Occupied Bandwidth meets the requirements of Part 80.211(f). Paragraph 2.995 Frequency Stability Method: The sample radio was placed in an environmental chamber and left over night at - 20°C to stabilise the temperature. The frequency was measured at 10°C intervals, allowing 10 minutes to change temperature and 30 minutes for the unit under test to stabilise. Test Equipment VoltageIso Tech IDM68 TemperatureFluke 52 Digital Thermometer28/7/98 FrequencyRohde & Schwarz CMT18/8/98 Test Results: Temp ° °° ° C Frequency MHz Offset Hz Error ppm -20156.798500-1500-9.57 -10156.799060-940-5.99 0156.799520-480-3.06 10156.799760-240-1.53 20156.799910-90-0.57 30156.799930-70-0.45 40156.800040400.26 50156.8002502501.59 60156.8006406404.08 Frequency error -15 -10 -5 0 5 10 15 -20-10 0 102030405060 Rt1200 error - ppm The Transmitter frequency tolerance meets the requirements of Part 80.209(a)