Lectrosonics UCR411a User Manual download pdf (Page 15)

UHF Digital Hybrid Wireless™ Receiver

Rio Rancho, NM

The receiver is supplied with two straight BNC whip

antennas. In some circumstances remote antennas

may be useful for improving reception. Position remote

antennas at least three or four feet apart and at least

three or four feet from large metal surfaces. If this is not

possible, try to position the antennas so that they are as

far away from the metal surface as is practical. It is also

good to position the receiver so that there is a direct

“line of sight” between the transmitter and the receiver

antenna. In situations where the operating range is less

than about 100 feet, the antenna positioning is much

less critical.

Note: Be careful about the length of cabling from

antenna to receiver. Long cable runs can have

serious signal loss. Lectrosonics has in-line RF

ampliﬁers suitable for compensating for long cable

runs. Contact your dealer or the factory for more

information.

A wireless transmitter sends a radio signal out in all

directions. This signal will often bounce off nearby walls,

ceilings, etc. and a strong reﬂection can arrive at the re-

ceiver antenna along with the direct signal. If the direct

and reﬂected signals are out of phase with each other a

cancellation may occur. The result would be a “drop-

out.” A dropout sounds like either audible noise (hiss),

or in severe cases, may result in a complete loss of the

carrier and the sound when the transmitter is positioned

in certain locations.

Antenna Use and Placement

A UHF dropout sounds like a very brief “sshhht” or

a “swishing” sound. Moving the transmitter even a

few inches will change the sound of the dropout, or

eliminate it. A dropout situation may be either better or

worse as a crowd ﬁlls or leaves the room, or when the

transmitter or receiver is operated in a different location.

The receiver offers a sophisticated diversity design

which overcomes dropout problems in almost any situ-

ation. In the event, however, that you do encounter

a dropout problem, ﬁrst try moving one of the remote

antennas at least 3 or 4 feet from its original location (or

move the receiver if the antennas are attached directly

to it). This may alleviate the dropout problem at that

location. If dropouts are still a problem, try moving the

antennas to an entirely different location in the room or

moving them closer to the transmitter location.

Lectrosonics transmitters radiate power very efﬁciently,

and the receivers are very sensitive. This reduces

dropouts to an insigniﬁcant level. If, however, you do

encounter dropouts frequently, call the factory or consult

your dealer. There is probably a simple solution.

1 2 ... 10 11 12 13 14 15 16 17 18 19 20 ... 27 28

Comments to this Manuals

No comments

Lectrosonics UCR411a User Manual Page 15

Comments to this Manuals

Related products and manuals for Equipment Lectrosonics UCR411a