Yamaha RX-V795RDS Owner's Manual page 26

PREPARATION
Connecting the indoor FM antenna
Connect the included indoor antenna to the 75Ω UNBAL. FM
ANT terminal.
Note
Do not use an outdoor FM antenna and the indoor FM
antenna at the same time.
Optional outdoor AM antenna
If this unit is placed in steel buildings or an area far from
broadcasting stations, it may be necessary to install an outside
long wire antenna.
Optional outdoor FM antenna
Consult your dealer or authorized service center about the best
method of selecting and erecting an outdoor FM antenna.
The choice of the flat ribbon cable is also important. Flat ribbon
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 flat ribbon cable. 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 this type of cable.
300-ohm flat
ribbon cable
24
* Use a 75-ohm/300-ohm antenna adapter (not included) or a
300-ohm flat ribbon cable
Notes for FM antenna installation
75-ohm coaxial
cable
GND terminal
For maximum safety and minimum interference, connect
the GND terminal to a good ground. A good ground is a
metal stake driven into moist earth.
75-ohm antenna adapter (not included) for connections.
75-ohm/300-ohm antenna adapter
75-ohm coaxial
cable
To minimize the influence of automobile ignition noise,
locate the antenna as far from heavy traffic as possible.
Keep the flat ribbon cable or coaxial cable as short as
possible. Do not bundle or roll up an excess of the cable.
The antenna should be at least two meters (6.6 feet) from
reinforced concrete walls or metal structures.
75-ohm coaxial cable
75-ohm antenna
adapter