RFCAST – MT100. Rev. 2: 06-12-04
12/16
The directional coupler is a block composed by 2 directional couplers and a quarter wave
delay line. Both ports of each directional coupler are used. Two of them detect the
reflected power, one detects the FWD power and one is used as RF monitor. The function
of the delay line is to have two reflected power signals detected at 90° of electrical angle.
In this way, it is possible to have a quite constant reflected power level vs. the phase
angle of that signal. The RF monitor is connected to the front panel (RF monitor port) to
have +10 dB nominal signal.
4.0 MT100 Technical Specifications
Environmental
Storage Temperature:
-20/+65
°
C
Operating Temperature:
-5/+45
°
C
Guarantee Performance Temperature:
0/+45
°
C
Relative Humidity (Non Condensing):
< 90%
Guarantee Performance Altitude:
2000 m, (6560 ft)
Cooling:
> 100 cubic meters/hour
RF Characteristics
Frequency Range:
87.5 – 108 MHz, 50Khz step, synthesized.
Output Power:
100 Watt nominal, (VSWR < 1.8:1).
RF Power Devices Technology:
MOSFET
Off lock Attenuation:
> 60 dBc
RF Output connector:
N Female
RF Output Impedance:
50
Ω
RF Output monitor level:
0 dBm nominal (BNC connector on the front panel)
RF Spurious:
< -95dBc @ +/-1MHz (Exceed .EBU/CCIR/FCC)
Harmonic: <
-90dBc
Frequency stability:
< 500 Hz / 6 months @ Center Frequency
Inputs:
Mono, Stereo, MPX, AUX, SCA/RDS
Input Impedance:
600
Ω
or 5K
Ω
unbalanced
Modulation Type:
F3E/F8E Direct FM at the carrier frequency
Frequency deviation:
+/-75KHz=100%
Variation of sensitivity for 75 KHz
Deviation:
+/-1dB from 87.5 to 108 MHz
AF Limiter:
+1dB
Center Frequency Shift:
< +/-500Hz, (Due to +/-75KHz Mod)
Stereo Operation:
CCIR 450/S2 “Pilot Tone System”
Asynchronous AM SNR:
(REF=100% AM Mod, @400Hz, BW=30Hz
to 20KHz, FM Mod OFF)
- 56dB
Synchronous AM SNR:
(REF=100% AM Mod, @400Hz, BW=30Hz
to 20KHz, FM Mod +/-75KHz @400Hz)
-50dB
Electrical
Power Supply:
96/130 or 200/268 V, Single Phase AC, 48 to 62Hz.
Power Consumption:
< 250 VA
