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Broadcast Quality Audio Processor HQ 5.2

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TR.6000 HQ 5.0 AM Broadcast Transmitter

HQ 5.0 Audio Filter

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
Processor Installation Processor Installation
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).
Bill Baker (phone 616.772.2300, extension 102) can provide a formal quote.
  *These specifications are subject to change without notice.
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PO Box 51, Zeeland, Michigan, USA, 49464-0051, Phone 616.772.2300, Fax 616.772.2966, Email Form

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Information Radio Stations is a generic term synonymous with Travelers Information Stations (TIS), Highway Advisory Radio Stations (HAR) / Highway Information Systems & Low Power Radio Stations (LPR). Operation of the stations is governed by FCC Part 90.242 Rules. A FCC license is required. Information Radio Stations may be fixed or portable. Subcomponents may include transmitter, antenna and ground system, digital voice player, wateter, cabinet with conventional or Corbin locks, lightning arrestors for RF, power and telephone lines, coaxial cable. Most stations employ black maximized antennas to discourage ice accumulation and security measures to prevent unauthorized program access. Options include synchronization, battery backup, solar power, remote programming by local, network or telco, multi-station audio distribution via RF or LAN / WAN or wireless network