F.u.n.k.e. FSG 90 - Transmitter Characteristics

FSG 90 System
Appendix A
62 FAV_D10024 December 2014
A.5 Transmitter Characteristics
FSG 90(X): Nominal TX RF Output Power
(normal operation)
≥ 6 Watt / 50 Ω (carrier), ≥ 20 Watt PEP, at 13.8 Vdc
-0.5 dB … +1.5 dB
FSG 90-H1: Nominal TX RF Output Power
(normal operation)
≥ 10 Watt / 50 Ω (carrier), ≥ 30 Watt PEP, at 14.0 Vdc
-0.5 dB … +1 dB
FSG 90: Nominal TX RF Output Power
(emergency operation)
≥ 1.5 Watt / 50 Ω (carrier) at 10 Vdc supply
FSG 90-H1: Nominal TX RF Output Power
(emergency operation)
≥ 3.5 Watt / 50 Ω (carrier) at 10 Vdc supply
TX Duty Cycle
1 : 4 (1 minute TX / 4 minutes RX)
TX Time Out Timer
After 2 minutes continuous TX. Transmitter is unkeyed
automatically and the radio display flashes as a warning.
Modulation
Amplitude modulation, AM (A3E)
Depth of Modulation
≥ 75% (Voice processor with dynamic compression)
Modulation Distortion
≤ 10% (m = 70% / 1,000 Hz)
≤ 15% (m = 70% / 350 ... 2,500 Hz)
Modulation Audio Frequency Response
≤ +2 dB and -4 dB (350 ... 2,500 Hz)
Modulation AF Input for m = 70%
Dynamic Microphone: ≤ 0.5 ... 10 mV symmetrical,
sensitivity adjustable in SET-UP.
Amplified/Carbon Microphone: ≤ 80 ... 500 mV
unsymmetrical, sensitivity adjustable in SET-UP.
True Transmit Sidetone (derived from
modulated TX RF signal)
≥ 100 mW / 600 Ω (at 13.8 Vdc supply),
≥ 50 mW / 600 Ω (at 10 Vdc), volume adjustable in SET-
UP, independent from speaker volume
Carrier Noise Level
≥ 45 dB (m = 70%/1,000 Hz)
Emission of RF Energy (≤ 1000 MHz)
≤ 0,25 µW (-36 dBm) / 71 dB µV / 3.54 mV / 50 Ω
≤ 4 nW (-54 dBm) / 53 dB µV / 446 µV / 50 Ω, from
47 ... 68, 87.5 ... 137, 162 ... 244, 328 ... 336, 470 ... 862
MHz
Emission of RF Energy (≥ 1000 MHz)
≪ 1 µW / ≪ -30 dBm / ≪ 77 dB µV / ≪ 7 mV / 50 Ω
Transmitter Spectrum Mask
Max. +2 / -4 dB at 350 … 2,500 Hz modulation (8.33 kHz
spacing)
≥ 45 dB at 3,200 Hz modulation (8.33 kHz spacing)
≥ 60 dB at ≥ 5,000 Hz modulation (8.33 kHz spacing)
Channel Selection Time
≤ 0.5 sec
Frequency Tolerance
≤ 1 ppm (0°C ... + 40°C / 32°F ... 104°F),
≤ 1.5 ppm (-20°C ... + 55°C / -4°F ... + 131°F)
Unwanted FM (Frequency modulation)
≤ 1.0 kHz at m = 70% / 1,000 Hz
TX Intermodulation
≥ 45 dB
Antenna Mismatching
VSWR ≤ 3 : 1, normal operation
At VSWR 3 : 1 the requirements for modulation distortion,
spurious and harmonics output as well as frequency
stability are met. In addition, the RF output is ≥ 40 % /
FSG 90: ≥ 2.4 Watt into 50 Ω at 13.8 Vdc.
FSG 90-H1: ≥ 6 Watt into 50 Ω at 14.0 Vdc.
At VSWR ≤ 5 : 1 still functional.