Connecting The Antennas; Rx-V640Rds; Connecting The Am Loop Antenna - Yamaha RX-V640RDS Owner's Manual

Connecting the antennas

Both AM and FM indoor antennas are included with this
unit. In general, these antennas should provide sufficient
signal strength.
Connect each antenna correctly to the designated
terminals.
AM loop antenna
(included)
TUNER
AM
ANT
GND
75Ω UNBAL.
FM
ANT
Ground (GND terminal)
For maximum safety and minimum
interference, connect the antenna GND
terminal to a good earth ground. A good
earth ground is a metal stake driven into
moist earth.
75-ohm/300-ohm antenna adapter (U.K. model only)
1
Open the cover of the
included 75-ohm/300-ohm
antenna adapter.
3
Lead wire
Cut the lead wire and
remove it.
4
Clamp Clamp with
with pliers.
pliers.
Insert the wire
into the slot.
Insert the cable wire into the
slot, and clamp it with pliers.

RX-V640RDS

Indoor FM
antenna
(included)
2
11 (7/16)
8 (5/16) Unit:
6 (1/14) mm (inch)
Cut the external sleeve
of the 75-ohm coaxial
cable and prepare it for
connection.
5
Snap the cover into
place.
I Connecting the AM loop antenna
1
Set up the AM loop antenna, then connect it
to the terminals on this unit.
2
Press and hold the tab to insert the AM loop
antenna lead wires into the AM ANT and
GND terminals.
3
Orient the AM loop antenna for the best
reception.
Notes
• The AM loop antenna should be placed away from this unit.
• The AM loop antenna should always be connected, even if an
outdoor AM antenna is connected to this unit.
A properly installed outdoor antenna provides clearer
reception than an indoor one. If you experience poor
reception quality, an outdoor antenna may improve the
quality. Consult the nearest authorized YAMAHA
dealer or service center about the outdoor antennas.
FREQUENCY STEP switch (China and General
models only)
Because the inter-station frequency
FM/AM
spacing differs in different areas, set the
50kHz/9kHz
100kHz/10kHz
FREQUENCY STEP switch (located on
the rear panel) according to the frequency
FREQUENCY
STEP
spacing in your area.
North, Central and South America:
100 kHz/10 kHz
Other areas: 50 kHz/9 kHz
Before setting this switch, disconnect the
AC power plug of this unit from the AC
outlet.
CONNECTIONS
13