Yamaha TX-497 Manuale Utente

■ Connecting a coaxial cable to the 

■ Notes on the 75-ohm coaxial and 

Consult with your dealer or authorized service center 
about the best method of selecting and erecting an outdoor 
FM antenna. The choice of the feeder cable is also 
important. Flat ribbon-shaped twin-lead cable performs 
well electrically, and is cheaper and somewhat easier to 
handle when routing it through windows and around 
rooms. Coaxial cable is more expensive, does a much 
better job of minimizing interference, is less prone to the 
effects of weather and close-by metal objects, and is 
nearly as good a signal conductor as feeder cable, 
particularly for foam-type coaxial cables. Coaxial cable is 
somewhat more difficult to install at the point where the 
cable enters the building. If coaxial cable is selected, make 
sure the antenna is designed to be used with that type of 
cable.

• To minimize interference from automobile ignition, locate the 

antenna as far from heavy traffic as possible.

• Keep the feeder cable or coaxial cable as short as possible. Do 

not bundle or roll up excess cable.

• The antenna should be placed at least 2 meters (6.6 ft) from 

reinforced concrete walls or metal structures.

■ FREQUENCY STEP switch 

Because the interstation frequency 
spacing differs in different areas, set 
the FREQUENCY STEP switch on 
the rear panel of this unit according to 
the frequency spacing in your area.
• North, Central and South America: 

100 kHz/10 kHz

• Other areas: 50 kHz/9 kHz
Before setting this switch, disconnect this unit’s AC power 
plug from the AC wall outlet.

11 (7/11)

8 (5/16)
6 (1/14)

Unit: mm (in)

Lead wire

Clamp

Clamp

Insert the wire 
into the slot