9200/9205/9205N Series
Monaural STL
FEATURES |
BENEFITS |
Frequency Synthesized
Transmitter and Receiver |
Field-programmable for ease
of set-up and frequency change |
Optimized for stereo or dual
mono with redundancy |
Excellent separation and
on-air reliability |
0.2% T.H.D., 70 dB SNR, 70
dB channel separation |
High quality / low
distortion operation |
Internal phase and gain
matching for excellent stereo performance |
Superior stereo separation
through precise matching of units |
Designed for channel
allocations as little as 100 kHz and 200 kHz |
Spectrum efficient for
operation in congested areas |
Spurious free, on-channel
power amplification |
Wide bandwidth operation
provides excellent performance |
Economical built-in
subcarrier generator and demodulator (optional) |
Enhanced capability for
remote control and data applications |
Built-in automatic
changeover in receiver |
Less hardware for hot
standby for even greater reliability |
External interface to
transmitter automatic changeover |
Back-up, hot-standby
operation easily accomplished |
GENERAL DESCRIPTION
The Model 9200 Series Monaural STL System is an
economical, frequency-synthesized STL system which is designed for either
single, redundant dual channel or stereo program transmission for studio
to transmitter links or inter-city relays. Both the transmitter and
receiver utilize state-of-the-art Very Large Scale Integrated (VLSI)
circuits to achieve low component count for high reliability and reduced
manufacturing costs.
The optional built-in 39 kHz FM subcarrier
generator and demodulator may be utilized for either data transmission or
a supervisory channel.
When two STL transmitters and receivers are
used for stereo, provision is made for properly matching phase and gin
characteristics between the two pairs.
Both the transmitter and receiver feature
comprehensive front panel metering for monitoring system performance
including forward and reverse power and other important diagnostic
functions.
FREQUENCY SYNTHESIZED
The TFT patented frequency synthesized design
provides very low phase noise and low spurious output so that the STL
system can achieve greater than 70 dB SNR with only +/- 22 kHz of FM
deviation, which makes efficient use of the RF spectrum. The "on
channel" amplification technique instead of crystal modulation /
multiplication eliminates the errors inherent in a crystal frequency
multiplication STL system. The 9200/9205 is an ideal narrow band STL
system which is optimized for operation in congested RF
environments. It has excellent protection against adjacent channel
interference and delivers broadcast quality sound without
degradation.
STEREO OPERATION
For stereo or dual mono installations in which
the transmitter and receiver pairs share common antennas, TFT can furnish
a transmitter combiner/isolator which eliminates intermodulation products
and a receiver low noise antenna splitter.
SPECTRUM EFFICIENT CHANNEL
SPACING
The 9200/9205 is available in two different RF
channel spacing configurations. The standard is for a minimum 200
kHz channel spacing with a deviation of +/- 22 kHz for the program channel
and +/- 3 kHz deviation for a 39 kHz subcarrier for data or remote
control. The 9200/9205N is a narrow band system which incorporates a
phase-linear crystal filter for a minimum 100 kHz channel spacing with a
deviation of +/- 15 kHz for a 15 kHz program channel only.
HOT-STANDBY OPERATION
Model 7770 Transmitter Automatic Changeover
unit is an optional 1-3/4" high rack mount unit which monitors critical
parameters of two transmitters. If a fault is detected, it
automatically switches the antenna to the hot standby transmitter.
Changeover can also be accomplished by a front panel switch or relay
contact closure in remote equipment.
The 9205 receiver has a built-in failure
sensing and changeover circuit. When the primary receiver fails, it
automatically switches the output to the hot-standby unit. No
optional receiver changeover is required.
OPTIONS
SCA/MUX Encoder (7100-4227) = Plug in SCA/MUX
generator board for subcarrier frequency of 39 kHz.
SCA/MUX Decoder (7100-3752) = Plug in SCA/MUX
decoder board for demodulation of the 39 kHz subcarrier channel.
Please specify audio or subcarrier output.
SPECIFICATIONS
SYSTEM |
|
Frequency Range,
Model (Tx/Rx), Output
other frequencies available upon
request |
800-960 MHz,
9200/9205,
5-8W
400-480 MHz, 9240/9245,
15-20W
300-340 MHz, 9230/9235,
15-20W
200-240 MHz, 9220/9225,
15-20W
140-180 MHz, 9210/9215, 15-20W |
Frequency
Response |
Audio program: +/-
0.2 dB or better, 30 Hz to 15
kHz. MUX: +/- 3 dB,
50 Hz to 5 kHz |
Distortion (THD
& IMD) |
0.2% or less at
1kHz |
Signal-to-Noise
Ratio |
70 dB or better
below 100% modulation, de-emphasized |
Stereo Channel
Separation |
70 dB
|
TRANSMITTER |
|
RF Power
Output |
See
above |
RF Output
Connector |
Type N Female, 50
ohms |
Deviation for 100% Program
Modulation |
+/- 22 kHz for 200 kHz channel
spacing (standard)
+/- 15 kHz for 100 kHz channel spacing |
Subcarrier Frequency |
39 kHz |
Subcarrier Deviation |
+/- 3 kHz FM |
Subcarrier Injection |
+/- 3 kHz |
Frequency Stability |
Better than .00025%, 0 degree
C to + 50 degree C |
Spurious and Harmonic
Emission |
60 dB or more below carrier
level |
Modulation
capability |
One monaural program and one
subcarrier (built-in or external) |
Modulation Inputs |
Program: 3.0 Vp-p for 100%
modulation, 2k ohms, balanced and unbalanced, BNC and terminal
strip. MUX audio: 1.2 Vp-p for 100% modulation of internal
subcarrier generator, 2k ohms. External Subcarrier: 1.2 Vp-p
for 100% injection, 2k ohm |
Automatic Changeover |
Provision for interface with
Model 7770 Transmitter Automatic Changeover |
Power Source |
115/230 VAC +/- 10%, 50/60 Hz,
75 watts, +12 VDC optional |
Monitoring
Capability |
One 2-1/2" analog meter for
monitoring forward and reflected RF power, power supply current,
multiplex and program modulation, and VCO bias |
Dimensions and
Weight |
5.25" (13.3 cm) H x 19" (48.2
cm) W x 12" (30.5 cm) D at 34.5 lbs. (15.7 kg) shipping
weight |
FCC Emission
Designator |
122K9E6F with 39 kHz
subcarrier, 60K3EGN without subcarrier |
FCC ID |
BIO9200 |
RECEIVER |
|
RF Input Connector |
Type N Female, 50
ohm |
Sensitivity |
15 microvolts required for
50 dB SNR, de-emphasized and 100 microvolts for 65 dB SNR,
de-emphasized |
Selectivity |
standard 200 kHz, +/- 65 kHz
at 3 dB BW channel spacing standard 200 kHz, +/- 400 kHz at 40
dB BW channel spacing "N" version 100 kHz, +/- 30 kHz at 3 db BW
channel spacing "N" version 100 kHz, +/- 100 kHz at 40 db BW channel
spacing |
Modulation Outputs |
Program: 7.0 Vp-p, 600 ohm
balanced and 3.5 Vp-p, 75 ohm unbalanced, BNC, terminal strip.
Multiplex: 2.2 Vp-p, 600 ohm BNC. Multiplex Audio: 600 ohms,
unbalanced |
Automatic
Changeover |
Built-in loop through
circuit standard |
Power Source |
115/230 VAC +/- 10%, 50/60
Hz, 50 watts. +12 VDC optional |
Monitoring
Capability |
One 2-1/2" analog meter for
monitoring power supply, 1 to 120% modulation for program and
multiplex channels, RF input level, and VCO bias |
Dimensions and
Weight |
3.25" (8.3 cm) H x 19" (48.2
cm) W x 14" (35.6 cm) D at 15 lbs. (6.8 kg) shipping
weight |
Operating
Temperature |
0 degree C to + 50 degree
C | |