Bedienungsanleitung Marantz Model 2252 (Seite 6 von 20) (Englisch)

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"'i"d1

75·ohm

coaxial cable

without

"F" connector

Figure 2. AM/FM Antenna Connection

signals available at this pair of jacks are not

affected by the BALANCE, VOLUME, TREBLE,

BASS, HI FILTER, LOUDNESS, and MONO

pushswitches on the front panel.

AUX INPUTS

The AUX INPUT jacks are for miscellaneous high

level signal sources such as additional tuners

and/or receivers, tape players, phonographs that

provide RIAA equalized high level output, TV

sound outputs and other external components.

FM ANTENNA

The best FM reception is obtained with a Log-

Periodic type antenna mounted on a good quality

rotor system. For fringe areas, Marantz recom-

mends a Log-Periodic antenna with six or more

elements designed expressly for FM reception.

To minimize local noise and multipath picked up

by the lead-in wires, use a balanced and shielded

300 ohm cable or a coaxial 75 ohm cable with a

300 to 75 ohm matching transformer at the

antenna. Unshielded lead-in acts as an omni-

directional antenna, and can cancel the direc-

tional benefits of your antenna. Low-loss 300

ohm shielded cable consists of two inner conduc-

tors plus an outer shield and insulating jacket.

This type of shielded cable effectively prevents

the lead-in from contributing multipath distor-

tion.

For rural areas, it is recommended that a local

dealer be consulted about antenna installation

and lightning arrestor protection. Master antenna

systems are not recommended for use with your.

Figure 3. AM Ferrite-rod Antenna

Model 2252; such systems are usually designed

expressly for television reception and frequently

suppress FM signals before distribution. In addi-

tion, master antenna systems often severely re-

duce the quality of the FM signal. Where outdoor

antennas are prohibited or inconvenient, place the

antenna in vacant attic space or use a simple 300

ohm TV "rabbit ear" antenna or the ribbon-type

folded dipole antenna supplied with the Model

2252. Both are practical and will give satisfactory

results in primary signal areas.

Figure 2 shows connection methods for various

antennas. If 75-ohm cable is desired, we recom-

mend using the type with an "F"-type connector

terminal attached to the cable. This is the easiest

type of cable to connect and disconnect.

AM ANTENNA

Your Tuner is equipped with an AM ferrite-rod

antenna. BEFORE USING THE MODEL 2252,

SWING THE ANTENNA OUT AS SHOWN IN

FIGURE 3.

The ferrite-rod antenna will give you satisfactory

results in primary signal areas. However, an out-

door antenna will provide better reception in

weaker signal areas.Three single wires are required

to make an AM outdoor antenna. First, connect

one end of a single wire to the AM ANTENNA

terminal on the rear panel, and the other end to a

very high horizontal antenna wire of 25 to 75 feet

in length suspended between insulators in an out-

door location (the higher the better). Next, con-

nect the third single wire between the

"G"

terminal of your Model 2252 and an authenti-

cated earth ground (such as a metal water pipe).

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Marantz Model 2252 Seite 6

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