Universal Instructions for:

HEAVY DUTY

Roof/Side Mount

Universal Antenna Assembly

PART # JAN139

Form# 37200037

Printed in China

Installation Instructions:

1.The antenna may be mounted either on top of the vehicle (roof mount) or on the side (See fig. A and B).

2.Disassemble the antenna mounting hardware and cable from the Antenna Assembly noting how it was assembled. (See Fig. C).

3.Select the mounting location using the following considerations: (See Fig. D)

A.The antenna cable is 40” long. Verify the selected antenna location will reach the radio’s antenna socket.

B.Check behind the area for access for mounting and clearance for cable/base assembly.

C.The mounting location (if at all possible) should be metal for best grounding of the antenna and minimal electrical noise interference.

4.Drill a 1/4” hole at the selected location using standard drilling precautions.

A.Remove any burrs from the drilled area.

B.Apply a small bead of sealant (not included) to the underside of the antenna base gasket to insure a leakproof installation.

5.Place the mast/base assembly over the mounting hole. Position the mounting stud through the hole and attach the cable assembly, mounting washers and nut.

(See Fig E).

6.Align the mast as desired and tighten the mounting nut. Do not overtighten as this may distort the rubber gasket. Best procedure is to firmly tighten the nut by hand then an additional 3/4 turn using a wrench.

7.Route antenna cable to radio and connect to antenna socket. Note: Any excess antenna cable should be loosely looped into a figure 8 type shape. Do not bend sharply. Do not stretch or tug on the antenna cable. Use wire ties (not included) to secure loose cable.

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Jensen JAN139 installation instructions Heavy Duty, Universal Instructions for, Installation Instructions

JAN139 specifications

The Jensen JAN139 is a highly regarded military-grade audio amplifier that has become a staple in various professional audio applications. This amplifier is designed to meet rigorous military specifications, making it an exemplary choice for environments where durability and reliability are paramount.

One of the main features of the Jensen JAN139 is its impressive power output. It typically delivers around 500 watts of clean audio power, which makes it suitable for a wide range of applications, from public address systems to heavy-duty sound reinforcement in challenging environments. The amplifier's robust construction ensures that it can operate effectively even in demanding situations, including extreme temperatures and vibrations.

The JAN139 employs a range of advanced technologies that enhance its performance and reliability. Among these is the use of high-quality components that contribute to low distortion and high fidelity audio reproduction. The amplifier supports a broad frequency response, allowing it to handle everything from deep bass to crisp highs with exceptional clarity. This makes it an excellent choice for both music applications and speech reinforcement.

Another noteworthy characteristic of the Jensen JAN139 is its versatility in audio processing. It features multiple input options, including XLR and TRS connections, which allow for easy integration with various audio sources. Additionally, the amplifier is often equipped with built-in limiters to prevent clipping and protect connected speakers, ensuring that the audio remains clear and undistorted even at high volumes.

In terms of connectivity, the JAN139 is designed for ease of use. The rear panel typically incorporates comprehensive output options, enabling users to connect multiple speakers or to create complex audio setups with minimal hassle. The amplifier's intuitive control layout allows for quick adjustments, making it user-friendly even in high-pressure situations.

The Jensen JAN139 not only excels in sound quality but also in energy efficiency. Its design often includes features that minimize power consumption without sacrificing performance, which is particularly advantageous for extended use in both military and civilian applications.

Overall, the Jensen JAN139 stands out as a reliable, high-performance audio amplifier that meets the demanding requirements of military use while also serving effectively in various professional audio settings. With its combination of power, versatility, and quality, it continues to be a preferred choice among audio professionals and military organizations alike.