Realistic PRO-16A manual Specifications, Adjacent Channel

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Your PATROLMAN PR0-16A scanning receiver is a completely tran- sistorized VHF / UHF superheterodyne receiver using dual-conversion for the VHF bands and triple conversion for the UHF band. It is capable of automatically scanning sixteen crystal-controlled chan- nels. Some special features are: four ceramic filters, channel lock-out circui"t, skipper circuit, AFC circuit for UHF band, scan delay circuit (switchable) and AC or DC operation.

It is designed for use in the narrow-band FM channels of public service communications: VHF and UHF band police, fire, civil defense, radio telephone, forestry and weather service, plus many other industrial radio services and the 2-meter "HAM" radio band (upper end). These and many other services share this band of frequencies from 30 to 50 MHz, 148 to 174 MHz and 450 to 512

MHz.

.

The PR0-16Afeatures both high sensitivity and selectivity and a sophisticated circuit which includes 10.7 MHz and 445 kHz ceramic filters to reduce or eliminate adjacent-channel or strong-signal inter- ference. Such interference is often experienced when operating in urban and metropolitan areas or where very strong and closely placed signals are present.

An important engineering achievement, designed for practical appli- cations, the PR0-16Ais remarkably easy to use, yet its up-to-date, complex circuit consists of 52 separate transistors (three of which are Field Effect Transistors), six intergrated circuits (which incorpo- rate the equivalent of hundreds of components), 66 diodes and 1 zener diode.

This Receiver is designed to operate from either 120 volts AC or 12 volts DC Negative Ground. If it fails to operate, and there is no clear reason for the failure, first check the "power" switch (part of Volume control) . Also, before connecting the PR0-16Areceiver to a DC power supply, check the voltage polarity. Attempting to operate the negative-ground PR0-16A from one of the rare positiveground automotive or boat electrical. systems, or from a wrongly connected battery, will at least blow a fuse. It may do further damage, so that expensive and time-consuming repairs are necessary before the PR0-16A can be used again. The Radio Shack warranty does not apply to any damage caused by this, inadequate lightning protec- tion, or other improper connections.

WARNING: TO PREVENT FIRE OR SHOCK HAZARD, DO NOT EXPOSE THIS RECEIVER TO RAIN OR MOISTURE.

SPECIFICATIONS

SEMICONDUCTOR

COMPLEMENT:

 

52 transistors, 6 integrated circuits

 

 

and 67 diodes

FREQUENCY RANGE:

 

30-50 MHz/ 148-174 MHz and

 

 

450- 512 MHz

CHANNELS OF OPERATION:

Sixteen-as determined by any one

 

 

of 16 crystals operating in the

FREQUENCY COVERAGE

frequency range

6 or 8 MHz for maximum sensitivity

(VHF):

 

 

(40 MHz± 3 MHz)

(UHF):

(153 MHz± 4 MHz)

30 MHz for maximum sensitivity

 

 

(480 MHz± 15 MHz)

SENSITIVITY:

 

Betterthan 1µVfor20dB quieting

SELECTIVITY:

 

±13.5 kHz, -6dB

 

 

±25 kHz, -50dB

ADJACENT CHANNEL

 

65 dB (25 kHz)

REJECTION:

 

SPURIOUS REJECTION (VHF): Greater than 50 dB

IMAGE REJECTION

(VHF):

Greater than 35 dB

 

(UHF): Greater than 20 dB

VARIABLE SCANNING SPEED: 10 to 20 channels/second

PRIORITY CYCLE RATE:

0.8 to 1.5 seconds

DELAY TIME:

 

1.5 to 3 seconds

MODULATION ACCEPTANCE:

±7 kHz

AFC ACTION (UHF):

 

Greater than ±4 kHz

1.F. FREQUENCY:

 

44 MHz (UHF Band only)

 

 

10.7 MHz and 455 kHz

FILTER:

 

Ceramic filter

 

 

(10.7 MHz and 455 kHz)

SQUELCH SENSITIVITY:

Variable from less than 1 microvolt

AUDIO POWER:

 

2 watts maximum

CRYSTAL REQUIREMENTS:

Standard HC-25/U, 3rd overtone

BUILT-IN SPEAKER:

 

2Y:1" x 4"(6.3x10 cm) oval speaker

POWER REQUIREMENTS:

ACc_ 120 voltsJ60Hz,12 watts, max.

 

 

DC-12-15volts Negative Ground

 

 

only ( 10 watts maximum)

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Contents EALIShC Specifications Adjacent ChannelPreparing for USE Control Location and Function Volume Installation Base InstallationElectrical System Ignition SystemScan Delay PriorityTypes of Signals Youllbe Able to Monitor Skipper CircuitMaintenance National Weather Service ReceptionSchematic Diagram IsvRadio Shack LIM Ited Warranty

PRO-16A specifications

The Realistic PRO-16A is a powerful and versatile multiband receiver that has garnered a dedicated following among radio enthusiasts and professionals alike. Known for its solid performance and user-friendly design, this receiver is ideal for both casual listening and serious DXing.

One of the standout features of the PRO-16A is its wide frequency coverage. It operates across multiple bands, including AM, FM, and shortwave, allowing users to tune into a vast array of frequencies. This makes it an excellent choice for those who enjoy listening to various types of broadcasts, from local radio stations to international shortwave signals.

The PRO-16A incorporates advanced technologies that enhance its reception capabilities. It employs a dual conversion superheterodyne design that minimizes interference and provides superior selectivity. This technology is crucial for DXing, as it enables users to pull in distant signals even in crowded frequency environments.

Another key characteristic of the PRO-16A is its sensitive front-end and low-noise stage, which significantly improve the clarity and quality of received signals. The receiver also includes a built-in AGC (Automatic Gain Control) feature, which automatically adjusts the volume of incoming signals to prevent distortion from strong broadcasts.

User experience is paramount in the design of the PRO-16A. The device features an easy-to-read digital display that provides clear information on the frequency being received, alongside a simple yet effective interface for tuning. The rotary knobs and buttons are intuitively placed for seamless operation, even in low-light conditions.

Additionally, the PRO-16A supports external antennas, enhancing its reception further. For avid listeners, this flexibility can mean the difference between receiving a weak signal and enjoying crystal-clear audio.

Durability and build quality are other strengths of the PRO-16A. Constructed with high-quality materials, this receiver is designed to withstand the rigors of both home use and travel. Its compact and lightweight design ensures portability without compromising functionality.

In summary, the Realistic PRO-16A stands out in the realm of multiband receivers due to its impressive features, advanced technologies, and ease of use. Whether you are a seasoned radio hobbyist or a newcomer to the world of broadcasting, the PRO-16A is an excellent choice for exploring the airwaves. Its ability to deliver reliable performance across a variety of bands makes it a valuable addition to any radio collection.
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