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HARRIS
HT 3.5FM - SPECIFICATIONS
GENERAL
POWER OUTPUT: 800 to 4000 watts
(FCC
type-notified
range)
FREQUENCY RANGE: 87.5 to 108 MHz in 50
kHz steps. Tuned to single frequency.
EXCITATION: Harris THE-1 High
Power FM Exciter
TYPE OF MODULATION: Direct carrier
frequency modulation (DCFM)
MODULATION
CAPABILITY: +200 KHz
RF LOAD IMPEDANCE: 50 ohms
RF OUTPUT
TERMINATION: 1 5/8” EIA
flange, female
PA MATCHING RANGE: 2:1 VSWR, maximum for
full output power; automatic power reduction into high VSWR's
RF HARMONIC/SPURIOUS
OUTPUT: Suppression meets or
exceeds FCC/DOC/CCIR specifications
AC INPUT POWER: 197-251 VAG, 50/60
Hz, single phase, 2-wire.
POWER CONSUMPTION:
7.5kw typical at 4kw
RF output (0.90 PF)
AMBIENT TEMPERATURE
RANGE:
-20 to +50°C at sea level; derated 2°C/1000 ft altitude
MAXIMUM ALTITUDE: 10,000 ft (60 Hz),
7,500 ft (50 Hz)
MAXIMUM HUMIDITY: To 95% non-condensing
AIR REQUIREMENTS: 400 CFM (60 Hz), 350
CFM (50 Hz); no back
pressure
CABINET SIZE:
33"W (84 cm) x
34"D (99 cm) x 72"H (183 cm)
WEIGHT/VOLUME: 880 Ibs/46.7 cu. ft.,
domestic packed
WIDEBAND COMPOSITE OPERATION (STANDARD)
INPUTS: Two; one
balanced, floating and
one unbalanced.
INPUT IMPEDANCE:
2000
ohms resistive.
INPUT CONNECTORS:
Female BNC (rear
panel).
INPUT LEVEL: 1.0 volt
RMS
nominal for +75
KHz deviation.
AMPLITUDE RESPONSE:
+0.1 dB, 30 Hz
to 53 kHz; -0.2 dB at 100 kHz.
FM SIGNAL TO NOISE: 80 dB below 100%
modulation (reference 400 Hz at +75 kHz deviation with 75 microsecond de-emphasis,
20 Hz to 200 kHz bandwidth).
HARMONIC DISTORTION: 0.08%
INTERMODULATION
DISTORTION: 0.02% (60 Hz/7 kHz
1:1 tone pair).
CCIF INTERMODULATION
DISTORTION: All distortion
products below 80 dB
(reference
14 kHz/15 kHz test
tone pair).
ASYNCHRONOUS AM
SIGNAL TO NOISE: 55 dB below
equivalent 100% amplitude modulation
SYNCHRONOUS
AM SIGNAL TO NOISE: 50 dB below
equivalent
100% amplitude
modulation
of
output
carrier with 75
microsecond
de-emphasis (FM modulation +75 kHz @ 400 Hz).
PHASE RESPONSE: +0.5/-1.0 degrees
from linear
phase,
20 Hz to 53 kHz.
TRANSIENT INTERMODULATION DISTORTION: 0.05%, 2.96KHz
square
wave/14KHz sine
wave modulation.
TEST INPUT (FRONT
PANEL): Nominal 1.0 volt for +75KHz
deviation at 400 Hz (10,000
ohm input impedance,
BNC female
connector)
TEST OUTPUT (FRONT
PANEL): Nominal 1.0 volt for +75KHz
deviation at 400 Hz
(200 ohm source
impedance, BNC female connector)
MONAURAL OPERATION (STANDARD)
AUDIO INPUT
IMPEDANCE:
600 ohms, balanced,
resistive, transformerless.
AUDIO INPUT LEVEL:
+10 dBm, +1 dB
for +75 kHz
deviation
at 400 Hz.
AUDIO FREQUENCY
RESPONSE:
Standard 75
microsecond FCC pre-emphasis curve +0.5
dB, 30 Hz-15 kHz.
Selectable:
flat, 25, 50 or 75
microsecond
pre-emphasis.
HARMONIC
DISTORTION: 0.08%, 30 Hz to 15 KHz, de-emphasized.
INTERMODULATION
DISTORTION: 0.04%, 60 Hz/7 kHz
test
tone
pair, 4:1
ratio.
CCIF
INTERMODULATION
DISTORTION: All
distortion products
down 70 dB (reference
14 kHz/15
kHz test
tone pair).
TRANSIENT
INTERMODULATION DISTORTION:
0.05%, 2.96 kHz
square
wave/14
kHz sine wave modulation
FM SIGNAL
TO NOISE RATIO: At least 80 dB
below 100% modulation (reference 400 Hz
@ +75 kHz
deviation, measured 20 Hz to 200 kHz bandwidth, 75 microsecond de-emphasis).
SCA INPUTS (STANDARD)
EXTERNAL SCA
GENERATOR INPUTS: Two
INPUT CONNECTORS: BNC female (rear
panel).
INPUT IMPEDANCE:
10,000
ohms, unbalanced.
INPUT
LEVEL: 0.1V
(nominal) for 10%
injection.
RANGE OF SUBCARRIER
FREQUENCIES: 57 kHz to 92 kHz (25
kHz to 92 kHz in monaural operation).
AMPLITUDE RESPONSE:
+0.1 dB, -0.2 dB; 20
kHz to 100 kHz.
SPECIFICATIONS ARE
REFERENCED TO
4 kW OPERATION,
EXCEPT WHEN NOTED.
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