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Audio Control Methods for
Information Radio Stations
Professional Recording Services
TR.6000 HQ 5.0 AM
Broadcast Transmitter
HQ 5.0
Audio Filter
|
Overview |
The HQ5.2 Broadcast Quality Audio
Processor has been certified by the FCC to operate in tandem
with the TR6000 (TIS/HAR) Transmitter to effect an increase in
broadcast audio quality. The processor replaces the TR6000's
audio filter and increases the audio bandwidth of the broadcast
from 3000 to 5000 Hz, adding compression and limiting functions.
The result is a brighter, louder and more intelligible reception
that often can be monitored at a greater distance.
This professional audio processor meets National Radio Systems
Committee (NRSC) mandated transmission standards for AM
broadcasting within the United States. It incorporates tight
peak control and adaptive pre-emphasis. The HQ5.2 meets new FCC
audio filtering standards for expanded bandwidth Travelers
Information Radio Stations (TIS). Certified by FCC on 2-18-2016
for exclusive use with the TR6000 Transmitter from Information
Station Specialists. |
"The new upgrade
to our station has dramatically improved the
strength and clarity of our signal. Thanks."
Kevin Valentine
Bernardsville, NJ, Police Department |
"Just wanted to let you know I
upgraded our transmitter with the HQ 5.2
this week. Big improvement!"
Scott Currie
Auburn, WA, Emergency Management Department |
"The new
filter made a big improvement in signal
quality."
Rob Jones
Salt Lake City, UT, Airports Department |
"Gentlemen, the equipment
sounds great!"
Emilio J. Gervasio
Standard Parking/O'Hare Airport |
 |
 |
Above, Chip and Chuck Freese of
West Grove, PA, install the HQ 5.2 Processor in
their Information Radio Station, a process made
easier because to their station’s dual-door
cabinet design that allows access to the rear of
the unit for convenient wiring |
|
Audio Comparison |
Sample 1 |
3K
Standard
This compares to what a conventional
Travelers Information Station has
sounded like until recently. The audio
you are hearing is natural but is
filtered through the 3000 Hz filter that
these radio stations have been required
to have in their transmitter circuitry
until now. |
Sample 2 |
3K Enhanced
Audio
Here is the same transmitter
broadcasting the same audio file that has been
equalized brighter and limited. This is more what
a more modern "file-based" station
sounds like today. Better, but there’s still no audio
above the 3000 Hz cutoff.
|
Sample 3 |
HQ 5.2 Broadcast Quality Audio Processor
Now listen on the same automobile radio
to that same natural audio file being
broadcast by the
same TR.6000 Transmitter
with the HQ 5.2 Broadcast Quality Audio
Processor added into the audio chain.
Bandwidth is now 5000 Hz and the
Processor is adding compression and
preemphasis, too. The increased intelligibility and
loudness of the resulting broadcast are evident. |
|
Technical Specifications* |
-
Front Panel Menu
with jog-wheel setup.
-
Performs AGC,
3-band compression, Peak Control and Output
Filtering. Has user adjustments for
compression, EQ, limiting and program
density.
-
DSP limiting
offers tight peak control without clipping.
-
USB Connector
enables fast firmware updates in the field.
-
Distortion: less
than 0.02% THD (Proof mode).
-
Noise: better
than 72dB below the limited ceiling level
measured through the appropriate de-emphasis
network.
-
Program Lines:
Input – Active-balanced XLR analog,
-20dBu-+20dBu; Output – Active-balanced XLR
analog, -15dBu-+12dBu.
-
Latency: 3.5 ms –
4.5 ms.
-
Power
Requirement: 12VDC at 200 ma with power
supply provided.
-
Size and Weight:
1.6” ”H x 5.5”W x 5.5”D (1U); 4 lbs.
-
Rack Space
Required: 1RU (1/3 space).
|
Quote |
Bill Baker (phone 616.772.2300, extension
102) can provide a formal quote. |
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