QEI
FMQ 20,000B, 20 KW FM Transmitter & QEI
FMQ 30,000B, 30 KW FM Transmitter
GENERAL
Power Output:
FMQ-20000B: 1100
to 22000 Watts
FMQ-30000B: 7500
to 30000 Watts
Frequency
Range: 87.5 to 108 MHz (other frequencies optional)
RF Load
Impedance: 50 ohms
Output
Connector: 3 1/8" EIA flange (Other connectors are optional)
VSWR:
1.6:1 max. at full power (automatic arc suppression and power
control for operation at reduced power into any phase or magnitude)
RF
Harmonic/Spurious: Suppression meets or exceeds all FCC /DOC /
CCIR specifications
Tube
Complement:
FMQ-20000B single
3CX15000A7
FMQ-30000B single
3CX15000A7
Exciter:
QEI model 675
(standard)
QEI model 695
(optional)
Asynchronous
AM S/N Ratio (AM Noise): -55 dBc (no FM modulation present)
Synchronous AM
S/N Ratio (Incidental AM): -50 dBc with 100 % FM modulation
ELECTRICAL/MECHANICAL
AC Power
requirement: 208/240 VAC 60Hz three phase standard, single phase
optional (tap range 198 to 250 VAC other line voltages and
frequencies optional)
Power
Consumption:
FMQ-20000B: 35 kW
at 20000 Watts
FMQ-30000B: 50 kW
at 30000 Watts
Ambient
Temperature Range:
Operating: -15
degrees C to +50 degrees C
Startup: 0
degrees C to +50 degrees C
Maximum
Altitude: 10,000 feet (3048m) AMSL
Maximum
Humidity: 95% non-condensing
Make Up Air
Requirements: (if exhaust stack is vented outside)
FMQ-20000B/30000B 1000 CFM
RF Cabinet
Size: (overall dimension) 23"W (59 cm) X 37"D (94cm) X 76"H
(193cm)
AC Cabinet
Size: (overall dimension) 23"W (59 cm) X 37"D (94cm) X 76"H
(193cm)
Cabinet
Weights:
RF Cabinet 950
Lbs. (435 kg)
AC Cabinet 1250
Lbs. (567 kg)
Since QEI's FMQ-Series
grounded grid design provides the widest bandwidth available in a
tube final, modulation specifications are exciter and stereo
generator dependent. For optimum performance, QEI recommends the use
of a QEI exciter and stereo generator which are optimized for system
performance. See the appropriate
exciter and
stereo generator specification sheet for detailed wideband
composite, monaural and stereo performance specifications. |
