Hints For The FM-250, LRDA, FMMA, and CPA-2

FM-250

How to adjust modulation (volume)

After proper connection of your sound source, verify transmission by tuning an FM radio to the assigned frequency. Note the “silence” and stereo beacon (or light). Initialize sound source and slowly adjust the volume output until the apparent loudness of the transmitter is slightly less than most other rock or pop stations. This is accomplished via alternately listening to a reference station and the FM-250. Make sure that no clipping is heard. It can manifest itself as a spitting or hashy type of sound.

Rear Connections

Notice the four connectors on the rear of the transmitter. Do not plug the audio cable into the ANT jack or damage may occur. When installing any RCA type plug, do not force or twist back and forth the connector. Push only with a moderate pressure to ensure that the plug(s) will not fall out. To remove any RCA plug, pull straight out, or only if necessary, slightly twist the plug back and forth.

Telescoping Antenna Installation

Verify that the power cable is not connected to the transmitter. Insert the flattened end of the antenna straight into the hole on the top of the case. It should insert no more than 3/4”. Next turn the antenna clockwise until it grabs the screw in the bottom of the case. Only turn the antenna until it stops—do not tighten. Practice will improve the ease at which the user completes this procedure.

Frequency Selection

Although the FM series of transmitters are rated for complete coverage of the FM broadcast band, the lower part of the band (88.1-95.1) gives the optimum reception for most radios. The band edges (88.1-95.1 and 100.9-107.9) are usually the most “open” and therefore the most suitable for acquiring a usable channel. It is always the owner/operator who is responsible for the transmitter’s continued legal operation. Check the operation frequently.

LRDA

Installation

Notice the gold and silver color of the radiators. The gold element should point “up” and the silver element should point “down.” This antenna must be installed vertically, never horizontally. Stretch the elements out just enough to remove the slack—do not place more than 5 lbs. of tension on these wires. A thumbtack or similar small metal object can be inserted through the loopholes in order to stretch out the antenna. The coaxial cable can veer off in any direction and does not act as any form of radiator. This antenna is not recommended for continuous outdoor use.

FMMA

Installation

This antenna requires at least 4 square feet of surface area (in any shape) for maximum signal coverage. Do not place anything underneath the magnet, such as wax paper, etc. The FMMA is rated for up to 70 mph driving conditions, not including winds. This unit is recommended for continuous outdoor use.

CPA-2

Installation

Insert the cigarette plug squarely and firmly into the vehicle’s cigarette lighter. If the red power light does not illuminate, check for power to the lighter and to see if the fuse blown. If the fuse is blown replace with same type only (3A, fast blow). The fuse is accessed by pushing and turning the silver center conductor on the tip of the cigarette plug. Pull straight out and then the spring loaded fuse can be replaced. When the red light is lit, connect the round cord to the FM-250 and the twin-axial (two conductor lamp type) cord to the CD player. For the Sony D-191 CD Player, be sure that the voltage selector reads 6 volts.

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